{"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":"23.157.172.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/23.157.172.0-23.157.172.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"allocated (dated 2026-04-30)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's statistics for 2026-10-09"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"83fa1e5cdca1fefa","report_date":"2026-04-30","source":"arin_issued","raw_action":"ADD","raw_line":"Add 23.157.172.0-23.157.172.255","resource_type":"ipv4","resource":"23.157.172.0/24","start":"23.157.172.0","end":"23.157.172.255","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":"2026-10-09T19:28:20+00:00","page":"https://rirtracker.com/ip/23.157.172.0-23.157.172.255/#e-83fa1e5cdca1fefa","evidence_url":"https://rirtracker.com/api/v1/events/83fa1e5cdca1fefa.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-04-29 and allocated (dated 2026-04-30) on 2026-05-01. 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/006348.html","retrieved_at":"2026-10-09T18:53:59+00:00","summary":"ARIN-Issued report for 2026-04-30: \"Add 23.157.172.0-23.157.172.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260429","retrieved_at":"2026-10-09T19:00:37+00:00","summary":"ARIN delegated statistics 2026-04-29 (produced 2026-04-29T13:00:40+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260501","retrieved_at":"2026-10-09T19:00:42+00:00","summary":"ARIN delegated statistics 2026-05-01 (produced 2026-05-01T13:00:38+00:00), after the report: allocated (dated 2026-04-30)"}]}],"classification_history":{"83fa1e5cdca1fefa":[{"raw_change_id":1897,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:20+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-04-29 and allocated (dated 2026-04-30) on 2026-05-01. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]}}