{"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":"164.152.227.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/164.152.227.0-164.152.227.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"reserved"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[{"id":30373,"date":"2023-01-31T16:06:35Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Stratus Technologies, Inc.","recipient_org":"Schoffstall Associates, Inc","range":"164.152.227.0/24"}],"events":[{"event_id":"99d860365849e271","report_date":"2026-06-08","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"164.152.227.0/24","start":"164.152.227.0","end":"164.152.227.255","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/164.152.227.0-164.152.227.255/#e-99d860365849e271","evidence_url":"https://rirtracker.com/api/v1/events/99d860365849e271.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":"2026-08-07","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 2023-01-31) on 2026-06-07 and reserved on 2026-06-09. 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 2026-08-07. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260609","retrieved_at":"2026-10-09T19:02:35+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 164.152.227.0/24 allocated on 2026-06-08, reserved on 2026-06-09"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260607","retrieved_at":"2026-10-09T19:02:28+00:00","summary":"ARIN delegated statistics 2026-06-07 (produced 2026-06-07T09:00:20+00:00), before the report: allocated (dated 2023-01-31)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260609","retrieved_at":"2026-10-09T19:02:35+00:00","summary":"ARIN delegated statistics 2026-06-09 (produced 2026-06-09T09:00:19+00:00), after the report: reserved"}]}],"classification_history":{"99d860365849e271":[{"raw_change_id":6819,"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 2023-01-31) on 2026-06-07 and reserved on 2026-06-09. 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 2026-08-07. This does not confirm availability."}]}}