{"classifier_version":"1.0.0","generated":"2026-10-09T21:19:22+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":"23.155.228.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/23.155.228.0-23.155.228.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"reserved"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"5c916c88f33a14df","report_date":"2026-05-21","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"23.155.228.0/24","start":"23.155.228.0","end":"23.155.228.255","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":"1.0.0","classified_at":"2026-10-09T19:28:30+00:00","page":"https://rirtracker.com/ip/23.155.228.0-23.155.228.255/#e-5c916c88f33a14df","evidence_url":"https://rirtracker.com/api/v1/events/5c916c88f33a14df.json","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":"2026-07-20","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 2026-04-06) on 2026-05-20 and reserved on 2026-05-22. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 for 60 days before reissuing them, so the earliest estimated hold expiration is 2026-07-20. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260522","retrieved_at":"2026-10-09T19:01:43+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 23.155.228.0/24 allocated on 2026-05-21, reserved on 2026-05-22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260520","retrieved_at":"2026-10-09T19:01:37+00:00","summary":"ARIN delegated statistics 2026-05-20 (produced 2026-05-20T13:00:40+00:00), before the report: allocated (dated 2026-04-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260522","retrieved_at":"2026-10-09T19:01:43+00:00","summary":"ARIN delegated statistics 2026-05-22 (produced 2026-05-22T13:00:40+00:00), after the report: reserved"}]},{"event_id":"c32963270e3608e5","report_date":"2026-04-06","source":"arin_issued","raw_action":"ADD","raw_line":"Add 23.155.228.0-23.155.228.255","resource_type":"ipv4","resource":"23.155.228.0/24","start":"23.155.228.0","end":"23.155.228.255","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":"1.0.0","classified_at":"2026-10-09T19:28:19+00:00","page":"https://rirtracker.com/ip/23.155.228.0-23.155.228.255/#e-c32963270e3608e5","evidence_url":"https://rirtracker.com/api/v1/events/c32963270e3608e5.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-04-05 and allocated (dated 2026-04-06) on 2026-04-07. 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/2026-April/006324.html","retrieved_at":"2026-10-09T18:53:59+00:00","summary":"ARIN-Issued report for 2026-04-06: \"Add 23.155.228.0-23.155.228.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260405","retrieved_at":"2026-10-09T18:59:24+00:00","summary":"ARIN delegated statistics 2026-04-05 (produced 2026-04-05T13:00:40+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260407","retrieved_at":"2026-10-09T18:59:30+00:00","summary":"ARIN delegated statistics 2026-04-07 (produced 2026-04-07T13:00:38+00:00), after the report: allocated (dated 2026-04-06)"}]}],"classification_history":{"5c916c88f33a14df":[{"raw_change_id":6674,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:30+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 2026-04-06) on 2026-05-20 and reserved on 2026-05-22. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 for 60 days before reissuing them, so the earliest estimated hold expiration is 2026-07-20. This does not confirm availability."}],"c32963270e3608e5":[{"raw_change_id":1578,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:19+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-04-05 and allocated (dated 2026-04-06) on 2026-04-07. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]}}