{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other Regional Internet Registry. Classifications and hold-expiration dates are evidence-based interpretations and do not constitute confirmation that a resource is available for issuance or transfer.","resource":"204.87.203.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/","statistics_now":{"registry":"ARIN","status":"reserved"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"4db5ec7485c1ac06","registry":"ARIN","report_date":"2025-08-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:13:33+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-4db5ec7485c1ac06","report_page":"https://rirtracker.com/arin/reports/2025-08-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","observed":"204.87.203.0/24 allocated on 2025-08-11, reserved on 2025-08-12","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2025-10-10","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2020-06-25) on 2025-08-10 and reserved on 2025-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2025-10-10. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250812.gz","retrieved_at":"2026-10-13T00:04:54+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 204.87.203.0/24 allocated on 2025-08-11, reserved on 2025-08-12"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250810.gz","retrieved_at":"2026-10-13T00:04:49+00:00","summary":"ARIN delegated statistics 2025-08-10 (produced 2025-08-10T13:00:50+00:00), before the report: allocated (dated 2020-06-25)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250812.gz","retrieved_at":"2026-10-13T00:04:54+00:00","summary":"ARIN delegated statistics 2025-08-12 (produced 2025-08-12T13:00:52+00:00), after the report: reserved"}]},{"event_id":"246ed83f02a503f3","registry":"ARIN","report_date":"2020-06-25","source":"arin_issued","raw_action":"ADD","raw_line":"Add 204.87.203.0-204.87.203.255","resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:52+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-246ed83f02a503f3","report_page":"https://rirtracker.com/arin/reports/2020-06-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. The tracker saw this range released from hold on 2020-06-24 (204.87.203.0-204.87.203.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2020-June/004213.html","retrieved_at":"2026-10-12T18:40:56+00:00","summary":"ARIN-Issued report for 2020-06-25: \"Add 204.87.203.0-204.87.203.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200624.gz","retrieved_at":"2026-10-12T22:26:15+00:00","summary":"ARIN delegated statistics 2020-06-24 (produced 2020-06-24T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200626.gz","retrieved_at":"2026-10-12T22:26:19+00:00","summary":"ARIN delegated statistics 2020-06-26 (produced 2020-06-26T14:00:12+00:00), after the report: assigned (dated 2020-06-25)"}]},{"event_id":"3174acca4305b63f","registry":"ARIN","report_date":"2020-06-25","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 204.87.203.0-204.87.203.255","resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:52+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-3174acca4305b63f","report_page":"https://rirtracker.com/arin/reports/2020-06-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","explanation":"ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.87.203.0-204.87.203.255. The issuance is explained on that line. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2020-June/004213.html","retrieved_at":"2026-10-12T18:40:56+00:00","summary":"ARIN-Issued report for 2020-06-25: \"Remove 204.87.203.0-204.87.203.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200624.gz","retrieved_at":"2026-10-12T22:26:15+00:00","summary":"ARIN delegated statistics 2020-06-24 (produced 2020-06-24T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200626.gz","retrieved_at":"2026-10-12T22:26:19+00:00","summary":"ARIN delegated statistics 2020-06-26 (produced 2020-06-26T14:00:12+00:00), after the report: assigned (dated 2020-06-25)"}]},{"event_id":"246dc0919461cac3","registry":"ARIN","report_date":"2020-06-24","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 204.87.203.0-204.87.203.255","resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:52+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-246dc0919461cac3","report_page":"https://rirtracker.com/arin/reports/2020-06-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2020-06-25: Remove 204.87.203.0-204.87.203.255; 2020-06-25: Add 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2020-June/004212.html","retrieved_at":"2026-10-12T18:40:56+00:00","summary":"ARIN-Issued report for 2020-06-24: \"Remove 204.87.203.0-204.87.203.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200623.gz","retrieved_at":"2026-10-12T22:26:12+00:00","summary":"ARIN delegated statistics 2020-06-23 (produced 2020-06-23T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200625.gz","retrieved_at":"2026-10-12T22:26:17+00:00","summary":"ARIN delegated statistics 2020-06-25 (produced 2020-06-25T14:00:14+00:00), after the report: reserved"}]},{"event_id":"7ecdb1e3a149f05d","registry":"ARIN","report_date":"2019-10-07","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:02+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-7ecdb1e3a149f05d","report_page":"https://rirtracker.com/arin/reports/2019-10-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","observed":"204.87.203.0/24 assigned on 2019-10-07, reserved on 2019-10-08","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2019-12-06","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2011-10-20) on 2019-10-06 and reserved on 2019-10-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2019-12-06. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191008.gz","retrieved_at":"2026-10-12T22:12:22+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 204.87.203.0/24 assigned on 2019-10-07, reserved on 2019-10-08"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191006.gz","retrieved_at":"2026-10-12T22:12:17+00:00","summary":"ARIN delegated statistics 2019-10-06 (produced 2019-10-06T14:00:16+00:00), before the report: assigned (dated 2011-10-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191008.gz","retrieved_at":"2026-10-12T22:12:22+00:00","summary":"ARIN delegated statistics 2019-10-08 (produced 2019-10-08T14:00:15+00:00), after the report: reserved"}]},{"event_id":"4644cb806033a61f","registry":"ARIN","report_date":"2011-10-20","source":"arin_issued","raw_action":"ADD","raw_line":"Add 204.87.203.0-204.87.203.255","resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:56+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-4644cb806033a61f","report_page":"https://rirtracker.com/arin/reports/2011-10-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-10-19 and assigned (dated 2011-10-20) on 2011-10-21. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2011-October/001043.html","retrieved_at":"2026-10-12T18:37:16+00:00","summary":"ARIN-Issued report for 2011-10-20: \"Add 204.87.203.0-204.87.203.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111019.gz","retrieved_at":"2026-10-12T19:26:36+00:00","summary":"ARIN delegated statistics 2011-10-19, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111021.gz","retrieved_at":"2026-10-12T19:26:44+00:00","summary":"ARIN delegated statistics 2011-10-21, after the report: assigned (dated 2011-10-20)"}]},{"event_id":"1476e78cf6eabd5b","registry":"ARIN","report_date":"2009-08-31","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 204.87.203.0-204.87.203.255","resource_type":"ipv4","resource":"204.87.203.0/24","start":"204.87.203.0","end":"204.87.203.255","classification":"UNRESOLVED","classification_label":"Unresolved change","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Inventory effect unknown","inventory_effect_code":"UNKNOWN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:46+00:00","page":"https://rirtracker.com/ip/204.87.203.0-204.87.203.255/#e-1476e78cf6eabd5b","report_page":"https://rirtracker.com/arin/reports/2009-08-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.87.203.0-204.87.203.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-08-30 and not issued on 2009-09-01. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2009-August/000256.html","retrieved_at":"2026-10-12T18:36:21+00:00","summary":"ARIN-Issued report for 2009-08-31: \"Remove 204.87.203.0-204.87.203.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090830.gz","retrieved_at":"2026-10-12T18:54:35+00:00","summary":"ARIN delegated statistics 2009-08-30, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090901.gz","retrieved_at":"2026-10-12T18:54:39+00:00","summary":"ARIN delegated statistics 2009-09-01, after the report: not issued"}]}],"classification_history":{"4db5ec7485c1ac06":[{"raw_change_id":484334,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:17:02+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2020-06-25) on 2025-08-10 and reserved on 2025-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2025-10-10. This does not confirm availability."},{"raw_change_id":484334,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:23:58+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2020-06-25) on 2025-08-10 and reserved on 2025-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2025-10-10. This does not confirm availability."},{"raw_change_id":484334,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:08:07+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2020-06-25) on 2025-08-10 and reserved on 2025-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2025-10-10. This does not confirm availability."},{"raw_change_id":484334,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:13:33+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2020-06-25) on 2025-08-10 and reserved on 2025-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2025-10-10. This does not confirm availability."}],"246ed83f02a503f3":[{"raw_change_id":165987,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:48:34+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. The tracker saw this range released from hold on 2020-06-24 (204.87.203.0-204.87.203.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165987,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:49+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. The tracker saw this range released from hold on 2020-06-24 (204.87.203.0-204.87.203.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165987,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:34+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. The tracker saw this range released from hold on 2020-06-24 (204.87.203.0-204.87.203.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165987,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:52+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. The tracker saw this range released from hold on 2020-06-24 (204.87.203.0-204.87.203.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."}],"3174acca4305b63f":[{"raw_change_id":165943,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:48:31+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.87.203.0-204.87.203.255. The issuance is explained on that line. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165943,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:49+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.87.203.0-204.87.203.255. The issuance is explained on that line. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165943,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:34+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.87.203.0-204.87.203.255. The issuance is explained on that line. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165943,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:52+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2020-06-24 and assigned (dated 2020-06-25) on 2020-06-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.87.203.0-204.87.203.255. The issuance is explained on that line. Another change to this range was reported the day before or after (2020-06-24: Remove 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."}],"246dc0919461cac3":[{"raw_change_id":165887,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:48:28+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2020-06-25: Remove 204.87.203.0-204.87.203.255; 2020-06-25: Add 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165887,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:49+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2020-06-25: Remove 204.87.203.0-204.87.203.255; 2020-06-25: Add 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165887,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:34+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2020-06-25: Remove 204.87.203.0-204.87.203.255; 2020-06-25: Add 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."},{"raw_change_id":165887,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:52+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2020-06-25: Remove 204.87.203.0-204.87.203.255; 2020-06-25: Add 204.87.203.0-204.87.203.255), so the before-and-after statistics may include it."}],"7ecdb1e3a149f05d":[{"raw_change_id":381122,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:32:09+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2011-10-20) on 2019-10-06 and reserved on 2019-10-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2019-12-06. This does not confirm availability."},{"raw_change_id":381122,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:17:52+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2011-10-20) on 2019-10-06 and reserved on 2019-10-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2019-12-06. This does not confirm availability."},{"raw_change_id":381122,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:35+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2011-10-20) on 2019-10-06 and reserved on 2019-10-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2019-12-06. This does not confirm availability."},{"raw_change_id":381122,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:02+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2011-10-20) on 2019-10-06 and reserved on 2019-10-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2019-12-06. This does not confirm availability."}],"4644cb806033a61f":[{"raw_change_id":124774,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:15:22+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-10-19 and assigned (dated 2011-10-20) on 2011-10-21. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":124774,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:22+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-10-19 and assigned (dated 2011-10-20) on 2011-10-21. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":124774,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:56+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-10-19 and assigned (dated 2011-10-20) on 2011-10-21. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2009-08-31 (204.87.203.0-204.87.203.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":124774,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:56+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-10-19 and assigned (dated 2011-10-20) on 2011-10-21. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"1476e78cf6eabd5b":[{"raw_change_id":120224,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:11:35+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-08-30 and not issued on 2009-09-01. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":120224,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:15+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-08-30 and not issued on 2009-09-01. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":120224,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:48+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-08-30 and not issued on 2009-09-01. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":120224,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:46+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-08-30 and not issued on 2009-09-01. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."}]},"arin_statistics_now":{"status":"reserved"}}