{"classifier_version":"1.0.0","generated":"2026-10-10T14:39:54+00:00","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by the American Registry for Internet Numbers (ARIN), the Number Resource Organization (NRO), or any 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":"204.90.91.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.90.91.0-204.90.91.255/","arin_statistics_now":{"file_date":"2026-10-10","status":"allocated (dated 2026-08-04)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's statistics for 2026-10-10"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"b96940cb144aee0c","report_date":"2026-08-04","source":"arin_issued","raw_action":"ADD","raw_line":"Add 204.90.91.0-204.90.91.255","resource_type":"ipv4","resource":"204.90.91.0/24","start":"204.90.91.0","end":"204.90.91.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","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":"1.0.0","classified_at":"2026-10-09T19:28:23+00:00","page":"https://rirtracker.com/ip/204.90.91.0-204.90.91.255/#e-b96940cb144aee0c","evidence_url":"https://rirtracker.com/api/v1/events/b96940cb144aee0c.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-08-03 and allocated (dated 2026-08-04) on 2026-08-05. The tracker saw this range released from hold on 2026-07-02 (204.90.91.0-204.90.91.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2026-August/006447.html","retrieved_at":"2026-10-09T18:54:07+00:00","summary":"ARIN-Issued report for 2026-08-04: \"Add 204.90.91.0-204.90.91.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260803","retrieved_at":"2026-10-09T19:05:31+00:00","summary":"ARIN delegated statistics 2026-08-03 (produced 2026-08-03T13:00:20+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260805","retrieved_at":"2026-10-09T19:05:37+00:00","summary":"ARIN delegated statistics 2026-08-05 (produced 2026-08-05T13:00:20+00:00), after the report: allocated (dated 2026-08-04)"}]},{"event_id":"ed59844e3d918509","report_date":"2026-08-04","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 204.90.91.0-204.90.91.255","resource_type":"ipv4","resource":"204.90.91.0/24","start":"204.90.91.0","end":"204.90.91.255","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":"1.0.0","classified_at":"2026-10-09T19:28:23+00:00","page":"https://rirtracker.com/ip/204.90.91.0-204.90.91.255/#e-ed59844e3d918509","evidence_url":"https://rirtracker.com/api/v1/events/ed59844e3d918509.json","explanation":"ARIN's statistics show it reserved on 2026-08-03 and allocated (dated 2026-08-04) on 2026-08-05. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.90.91.0-204.90.91.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2026-August/006447.html","retrieved_at":"2026-10-09T18:54:07+00:00","summary":"ARIN-Issued report for 2026-08-04: \"Remove 204.90.91.0-204.90.91.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260803","retrieved_at":"2026-10-09T19:05:31+00:00","summary":"ARIN delegated statistics 2026-08-03 (produced 2026-08-03T13:00:20+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260805","retrieved_at":"2026-10-09T19:05:37+00:00","summary":"ARIN delegated statistics 2026-08-05 (produced 2026-08-05T13:00:20+00:00), after the report: allocated (dated 2026-08-04)"}]},{"event_id":"76ff30e3321c4b10","report_date":"2026-07-02","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 204.90.91.0-204.90.91.255","resource_type":"ipv4","resource":"204.90.91.0/24","start":"204.90.91.0","end":"204.90.91.255","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":"1.0.0","classified_at":"2026-10-09T19:28:21+00:00","page":"https://rirtracker.com/ip/204.90.91.0-204.90.91.255/#e-76ff30e3321c4b10","evidence_url":"https://rirtracker.com/api/v1/events/76ff30e3321c4b10.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/2026-July/006414.html","retrieved_at":"2026-10-09T18:54:05+00:00","summary":"ARIN-Issued report for 2026-07-02: \"Remove 204.90.91.0-204.90.91.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260701","retrieved_at":"2026-10-09T19:03:46+00:00","summary":"ARIN delegated statistics 2026-07-01 (produced 2026-07-01T09:00:21+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260703","retrieved_at":"2026-10-09T19:03:53+00:00","summary":"ARIN delegated statistics 2026-07-03 (produced 2026-07-03T09:00:20+00:00), after the report: reserved"}]}],"classification_history":{"b96940cb144aee0c":[{"raw_change_id":4103,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:23+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-08-03 and allocated (dated 2026-08-04) on 2026-08-05. The tracker saw this range released from hold on 2026-07-02 (204.90.91.0-204.90.91.255), so it appears to have been issued again from ARIN's pool."}],"ed59844e3d918509":[{"raw_change_id":4101,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:23+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2026-08-03 and allocated (dated 2026-08-04) on 2026-08-05. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.90.91.0-204.90.91.255. The issuance is explained on that line."}],"76ff30e3321c4b10":[{"raw_change_id":2836,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:21+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."}]}}