{"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":"204.52.191.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.52.191.0-204.52.191.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2019-03-13)"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"39de6f2710eb1d5c","registry":"APNIC","report_date":"2019-03-13","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"204.52.191.0/24","start":"204.52.191.0","end":"204.52.191.255","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 APNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:25+00:00","page":"https://rirtracker.com/ip/204.52.191.0-204.52.191.255/#e-39de6f2710eb1d5c","report_page":"https://rirtracker.com/apnic/reports/2019-03-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.52.191.0-204.52.191.255.json","observed":"204.52.191.0/24 available on 2019-03-13, allocated on 2019-03-14","explanation":"No transfer record matches. APNIC's statistics show it available on 2019-03-13 and allocated (dated 2019-03-13) on 2019-03-14. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2019/delegated-apnic-extended-20190314.gz","retrieved_at":"2026-10-12T22:48:27+00:00","summary":"Found by comparing APNIC's daily statistics: 204.52.191.0/24 available on 2019-03-13, allocated on 2019-03-14"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2019/delegated-apnic-extended-20190313.gz","retrieved_at":"2026-10-12T22:48:24+00:00","summary":"APNIC delegated statistics 2019-03-13, before the change: available"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2019/delegated-apnic-extended-20190314.gz","retrieved_at":"2026-10-12T22:48:27+00:00","summary":"APNIC delegated statistics 2019-03-14, after the change: allocated (dated 2019-03-13)"}]},{"event_id":"7f8d9539f0aeb00c","registry":"ARIN","report_date":"2012-01-18","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"204.52.191.0/24","start":"204.52.191.0","end":"204.52.191.255","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":"2026-10-13T23:56:53+00:00","page":"https://rirtracker.com/ip/204.52.191.0-204.52.191.255/#e-7f8d9539f0aeb00c","report_page":"https://rirtracker.com/arin/reports/2012-01-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.52.191.0-204.52.191.255.json","observed":"204.52.191.0/24 assigned on 2012-01-18, not listed on 2012-01-19","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":"2012-03-18","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 1994-07-07) on 2012-01-17 and not issued on 2012-01-19. (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 2012-03-18. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120119.gz","retrieved_at":"2026-10-12T19:30:27+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 204.52.191.0/24 assigned on 2012-01-18, not listed on 2012-01-19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120117.gz","retrieved_at":"2026-10-12T19:30:23+00:00","summary":"ARIN delegated statistics 2012-01-17, before the report: assigned (dated 1994-07-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120119.gz","retrieved_at":"2026-10-12T19:30:27+00:00","summary":"ARIN delegated statistics 2012-01-19, after the report: not issued"}]}],"classification_history":{"39de6f2710eb1d5c":[{"raw_change_id":415967,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:46:52+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2019-03-13 and allocated (dated 2019-03-13) on 2019-03-14. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":415967,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:19:50+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2019-03-13 and allocated (dated 2019-03-13) on 2019-03-14. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":415967,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:03:42+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2019-03-13 and allocated (dated 2019-03-13) on 2019-03-14. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":415967,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:25+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2019-03-13 and allocated (dated 2019-03-13) on 2019-03-14. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."}],"7f8d9539f0aeb00c":[{"raw_change_id":236165,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:22:53+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 1994-07-07) on 2012-01-17 and not issued on 2012-01-19. (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 2012-03-18. This does not confirm availability."},{"raw_change_id":236165,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:10:05+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 1994-07-07) on 2012-01-17 and not issued on 2012-01-19. (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 2012-03-18. This does not confirm availability."},{"raw_change_id":236165,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:53:11+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 1994-07-07) on 2012-01-17 and not issued on 2012-01-19. (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 2012-03-18. This does not confirm availability."},{"raw_change_id":236165,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:53+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 1994-07-07) on 2012-01-17 and not issued on 2012-01-19. (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 2012-03-18. This does not confirm availability."}]},"arin_statistics_now":{"status":"not listed"}}