{"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":"2606:a4c0::/32","resource_type":"ipv6","page":"https://rirtracker.com/ip/2606.a4c0..-2606.a4c0.ffff.ffff.ffff.ffff.ffff.ffff/","arin_statistics_now":{"file_date":"2026-10-09","status":"allocated (dated 2022-01-14)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's statistics for 2026-10-09"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"ba07e26b9bd779ff","report_date":"2026-06-08","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv6","resource":"2606:a4c0::/32","start":"2606:a4c0::","end":"2606:a4c0:ffff:ffff:ffff:ffff:ffff:ffff","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/2606.a4c0..-2606.a4c0.ffff.ffff.ffff.ffff.ffff.ffff/#e-ba07e26b9bd779ff","evidence_url":"https://rirtracker.com/api/v1/events/ba07e26b9bd779ff.json","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_months":6,"estimated_hold_end":"2026-12-08","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 2022-01-14) 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 IPv6 for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2026-12-08. 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: 2606:a4c0::/32 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 2022-01-14)"},{"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":{"ba07e26b9bd779ff":[{"raw_change_id":6850,"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 2022-01-14) 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 IPv6 for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2026-12-08. This does not confirm availability."}]}}