{"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":"198.180.251.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/198.180.251.0-198.180.251.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2018-04-17)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"5b65b3b6d7954f76","registry":"ARIN","report_date":"2018-04-17","source":"arin_issued","raw_action":"ADD","raw_line":"Add 198.180.251.0-198.180.251.255","resource_type":"ipv4","resource":"198.180.251.0/24","start":"198.180.251.0","end":"198.180.251.255","classification":"RESTORED","classification_label":"Restored to the same holder","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":"2026-10-13T23:52:08+00:00","page":"https://rirtracker.com/ip/198.180.251.0-198.180.251.255/#e-5b65b3b6d7954f76","report_page":"https://rirtracker.com/arin/reports/2018-04-17/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.180.251.0-198.180.251.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. The tracker saw it removed from registration on 2016-05-10 (707 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-April/003415.html","retrieved_at":"2026-10-12T18:40:01+00:00","summary":"ARIN-Issued report for 2018-04-17: \"Add 198.180.251.0-198.180.251.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180416.gz","retrieved_at":"2026-10-12T21:44:51+00:00","summary":"ARIN delegated statistics 2018-04-16 (produced 2018-04-16T05:09:18+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180418.gz","retrieved_at":"2026-10-12T21:44:56+00:00","summary":"ARIN delegated statistics 2018-04-18 (produced 2018-04-18T05:09:51+00:00), after the report: assigned (dated 2018-04-17)"}]},{"event_id":"af83ca66fb40e4ed","registry":"ARIN","report_date":"2018-04-17","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 198.180.251.0-198.180.251.255","resource_type":"ipv4","resource":"198.180.251.0/24","start":"198.180.251.0","end":"198.180.251.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","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":"2026-10-13T23:52:08+00:00","page":"https://rirtracker.com/ip/198.180.251.0-198.180.251.255/#e-af83ca66fb40e4ed","report_page":"https://rirtracker.com/arin/reports/2018-04-17/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.180.251.0-198.180.251.255.json","explanation":"ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. ARIN removed its own pool record for this range as part of issuing it: the same report adds 198.180.251.0-198.180.251.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-April/003415.html","retrieved_at":"2026-10-12T18:40:01+00:00","summary":"ARIN-Issued report for 2018-04-17: \"Remove 198.180.251.0-198.180.251.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180416.gz","retrieved_at":"2026-10-12T21:44:51+00:00","summary":"ARIN delegated statistics 2018-04-16 (produced 2018-04-16T05:09:18+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180418.gz","retrieved_at":"2026-10-12T21:44:56+00:00","summary":"ARIN delegated statistics 2018-04-18 (produced 2018-04-18T05:09:51+00:00), after the report: assigned (dated 2018-04-17)"}]},{"event_id":"92f8bc7d54b5ce67","registry":"ARIN","report_date":"2016-05-10","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"198.180.251.0/24","start":"198.180.251.0","end":"198.180.251.255","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":"2026-10-14T00:01:57+00:00","page":"https://rirtracker.com/ip/198.180.251.0-198.180.251.255/#e-92f8bc7d54b5ce67","report_page":"https://rirtracker.com/arin/reports/2016-05-10/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.180.251.0-198.180.251.255.json","observed":"198.180.251.0/24 assigned on 2016-05-10, reserved on 2016-05-11","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":"2016-07-09","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 1993-08-17) on 2016-05-09 and reserved on 2016-05-11. 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 2016-07-09. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160511.gz","retrieved_at":"2026-10-12T21:10:11+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 198.180.251.0/24 assigned on 2016-05-10, reserved on 2016-05-11"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160509.gz","retrieved_at":"2026-10-12T21:10:06+00:00","summary":"ARIN delegated statistics 2016-05-09 (produced 2016-05-09T05:05:03+00:00), before the report: assigned (dated 1993-08-17)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160511.gz","retrieved_at":"2026-10-12T21:10:11+00:00","summary":"ARIN delegated statistics 2016-05-11 (produced 2016-05-11T05:05:06+00:00), after the report: reserved"}]}],"classification_history":{"5b65b3b6d7954f76":[{"raw_change_id":154178,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:02+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. The tracker saw it removed from registration on 2016-05-10 (707 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."},{"raw_change_id":154178,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:16+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. The tracker saw it removed from registration on 2016-05-10 (707 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."},{"raw_change_id":154178,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:57+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. The tracker saw it removed from registration on 2016-05-10 (707 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."},{"raw_change_id":154178,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:08+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. The tracker saw it removed from registration on 2016-05-10 (707 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."}],"af83ca66fb40e4ed":[{"raw_change_id":154166,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:01+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. ARIN removed its own pool record for this range as part of issuing it: the same report adds 198.180.251.0-198.180.251.255. The issuance is explained on that line."},{"raw_change_id":154166,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:16+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. ARIN removed its own pool record for this range as part of issuing it: the same report adds 198.180.251.0-198.180.251.255. The issuance is explained on that line."},{"raw_change_id":154166,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:57+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. ARIN removed its own pool record for this range as part of issuing it: the same report adds 198.180.251.0-198.180.251.255. The issuance is explained on that line."},{"raw_change_id":154166,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:08+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2018-04-16 and assigned (dated 2018-04-17) on 2018-04-18. ARIN removed its own pool record for this range as part of issuing it: the same report adds 198.180.251.0-198.180.251.255. The issuance is explained on that line."}],"92f8bc7d54b5ce67":[{"raw_change_id":317402,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:03:39+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 1993-08-17) on 2016-05-09 and reserved on 2016-05-11. 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 2016-07-09. This does not confirm availability."},{"raw_change_id":317402,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:14:28+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 1993-08-17) on 2016-05-09 and reserved on 2016-05-11. 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 2016-07-09. This does not confirm availability."},{"raw_change_id":317402,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:57:55+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 1993-08-17) on 2016-05-09 and reserved on 2016-05-11. 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 2016-07-09. This does not confirm availability."},{"raw_change_id":317402,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:01:57+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 1993-08-17) on 2016-05-09 and reserved on 2016-05-11. 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 2016-07-09. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2018-04-17)"}}