{"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":"150.230.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/150.230.0.0-150.230.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1989-03-27)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"4a4c74b76672bae8","registry":"ARIN","report_date":"2013-03-26","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 150.230.0.0-150.230.255.255","resource_type":"ipv4","resource":"150.230.0.0/16","start":"150.230.0.0","end":"150.230.255.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"STRONG_INFERENCE","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":"2026-10-13T23:51:04+00:00","page":"https://rirtracker.com/ip/150.230.0.0-150.230.255.255/#e-4a4c74b76672bae8","report_page":"https://rirtracker.com/arin/reports/2013-03-26/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.230.0.0-150.230.255.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved).","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2013-March/001566.html","retrieved_at":"2026-10-12T18:37:52+00:00","summary":"ARIN-Issued report for 2013-03-26: \"Remove 150.230.0.0-150.230.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130325.gz","retrieved_at":"2026-10-12T19:56:28+00:00","summary":"ARIN delegated statistics 2013-03-25 (produced 2013-03-25T05:03:07+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130327.gz","retrieved_at":"2026-10-12T19:56:33+00:00","summary":"ARIN delegated statistics 2013-03-27 (produced 2013-03-27T05:06:20+00:00), after the report: reserved"}]},{"event_id":"e526e80a449b0ff4","registry":"ARIN","report_date":"2011-12-30","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 150.230.0.0-150.230.255.255","resource_type":"ipv4","resource":"150.230.0.0/16","start":"150.230.0.0","end":"150.230.255.255","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":"2026-10-13T23:50:57+00:00","page":"https://rirtracker.com/ip/150.230.0.0-150.230.255.255/#e-e526e80a449b0ff4","report_page":"https://rirtracker.com/arin/reports/2011-12-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.230.0.0-150.230.255.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-12-29 and not issued on 2011-12-31. (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/2011-December/001114.html","retrieved_at":"2026-10-12T18:37:20+00:00","summary":"ARIN-Issued report for 2011-12-30: \"Remove 150.230.0.0-150.230.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111229.gz","retrieved_at":"2026-10-12T19:29:34+00:00","summary":"ARIN delegated statistics 2011-12-29, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111231.gz","retrieved_at":"2026-10-12T19:29:41+00:00","summary":"ARIN delegated statistics 2011-12-31, after the report: not issued"}]},{"event_id":"440a8bed16df5a17","registry":"ARIN","report_date":"2011-06-28","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"150.230.0.0/16","start":"150.230.0.0","end":"150.230.255.255","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":"2026-10-13T23:56:33+00:00","page":"https://rirtracker.com/ip/150.230.0.0-150.230.255.255/#e-440a8bed16df5a17","report_page":"https://rirtracker.com/arin/reports/2011-06-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.230.0.0-150.230.255.255.json","observed":"150.230.0.0/16 assigned on 2011-06-28, not listed on 2011-06-29","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":"2011-08-27","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 1991-08-07) on 2011-06-27 and not issued on 2011-06-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2011-08-27. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110629.gz","retrieved_at":"2026-10-12T19:21:58+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 150.230.0.0/16 assigned on 2011-06-28, not listed on 2011-06-29"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110627.gz","retrieved_at":"2026-10-12T19:21:53+00:00","summary":"ARIN delegated statistics 2011-06-27, before the report: assigned (dated 1991-08-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110629.gz","retrieved_at":"2026-10-12T19:21:58+00:00","summary":"ARIN delegated statistics 2011-06-29, after the report: not issued"}]}],"classification_history":{"4a4c74b76672bae8":[{"raw_change_id":128603,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:20:18+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":128603,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:28+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":128603,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:03+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":128603,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:04+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."}],"e526e80a449b0ff4":[{"raw_change_id":125195,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:15:56+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-12-29 and not issued on 2011-12-31. (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":125195,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:23+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-12-29 and not issued on 2011-12-31. (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":125195,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:57+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-12-29 and not issued on 2011-12-31. (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":125195,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:57+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-12-29 and not issued on 2011-12-31. (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."}],"440a8bed16df5a17":[{"raw_change_id":230487,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:20:27+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 1991-08-07) on 2011-06-27 and not issued on 2011-06-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2011-08-27. This does not confirm availability."},{"raw_change_id":230487,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:48+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 1991-08-07) on 2011-06-27 and not issued on 2011-06-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2011-08-27. This does not confirm availability."},{"raw_change_id":230487,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:52+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 1991-08-07) on 2011-06-27 and not issued on 2011-06-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2011-08-27. This does not confirm availability."},{"raw_change_id":230487,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:33+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 assigned (dated 1991-08-07) on 2011-06-27 and not issued on 2011-06-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2011-08-27. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 1989-03-27)"}}