{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other 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":"AS399666","resource_type":"asn","page":"https://rirtracker.com/asn/399666/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2024-04-11)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"330f38d002ccd29a","registry":"ARIN","report_date":"2024-04-11","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS399666","resource_type":"asn","resource":"AS399666","start":399666,"end":399666,"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":"1.4.0","classified_at":"2026-10-13T23:54:03+00:00","page":"https://rirtracker.com/asn/399666/#e-330f38d002ccd29a","report_page":"https://rirtracker.com/arin/reports/2024-04-11/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/399666.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. The tracker saw this range removed from registration on 2022-10-10 (AS399666), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2024-April/005599.html","retrieved_at":"2026-10-12T18:42:33+00:00","summary":"ARIN-Issued report for 2024-04-11: \"Add AS399666\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240410.gz","retrieved_at":"2026-10-12T23:38:13+00:00","summary":"ARIN delegated statistics 2024-04-10 (produced 2024-04-10T13:00:48+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240412.gz","retrieved_at":"2026-10-12T23:38:18+00:00","summary":"ARIN delegated statistics 2024-04-12 (produced 2024-04-12T13:00:47+00:00), after the report: assigned (dated 2024-04-11)"}]},{"event_id":"a3fa3c3ac4dcab97","registry":"ARIN","report_date":"2024-04-11","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS399666","resource_type":"asn","resource":"AS399666","start":399666,"end":399666,"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":"1.4.0","classified_at":"2026-10-13T23:54:03+00:00","page":"https://rirtracker.com/asn/399666/#e-a3fa3c3ac4dcab97","report_page":"https://rirtracker.com/arin/reports/2024-04-11/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/399666.json","explanation":"ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS399666. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2024-April/005599.html","retrieved_at":"2026-10-12T18:42:33+00:00","summary":"ARIN-Issued report for 2024-04-11: \"Remove AS399666\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240410.gz","retrieved_at":"2026-10-12T23:38:13+00:00","summary":"ARIN delegated statistics 2024-04-10 (produced 2024-04-10T13:00:48+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240412.gz","retrieved_at":"2026-10-12T23:38:18+00:00","summary":"ARIN delegated statistics 2024-04-12 (produced 2024-04-12T13:00:47+00:00), after the report: assigned (dated 2024-04-11)"}]},{"event_id":"7b8c6e7eb407ccb7","registry":"ARIN","report_date":"2022-10-10","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS399666","start":399666,"end":399666,"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":"1.4.0","classified_at":"2026-10-14T00:09:50+00:00","page":"https://rirtracker.com/asn/399666/#e-7b8c6e7eb407ccb7","report_page":"https://rirtracker.com/arin/reports/2022-10-10/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/399666.json","observed":"AS399666 assigned on 2022-10-10, reserved on 2022-10-11","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":"2023-04-10","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 assigned (dated 2021-05-11) on 2022-10-09 and reserved on 2022-10-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2023-04-10. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221011.gz","retrieved_at":"2026-10-12T23:09:12+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS399666 assigned on 2022-10-10, reserved on 2022-10-11"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221009.gz","retrieved_at":"2026-10-12T23:09:07+00:00","summary":"ARIN delegated statistics 2022-10-09 (produced 2022-10-09T13:00:10+00:00), before the report: assigned (dated 2021-05-11)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221011.gz","retrieved_at":"2026-10-12T23:09:12+00:00","summary":"ARIN delegated statistics 2022-10-11 (produced 2022-10-11T13:00:10+00:00), after the report: reserved"}]},{"event_id":"951942257686ce9d","registry":"ARIN","report_date":"2021-05-11","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS399666","resource_type":"asn","resource":"AS399666","start":399666,"end":399666,"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":"1.4.0","classified_at":"2026-10-13T23:53:09+00:00","page":"https://rirtracker.com/asn/399666/#e-951942257686ce9d","report_page":"https://rirtracker.com/arin/reports/2021-05-11/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/399666.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2021-05-10 and assigned (dated 2021-05-11) on 2021-05-12. 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/2021-May/004533.html","retrieved_at":"2026-10-12T18:41:19+00:00","summary":"ARIN-Issued report for 2021-05-11: \"Add AS399666\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210510.gz","retrieved_at":"2026-10-12T22:42:34+00:00","summary":"ARIN delegated statistics 2021-05-10 (produced 2021-05-10T14:00:13+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210512.gz","retrieved_at":"2026-10-12T22:42:38+00:00","summary":"ARIN delegated statistics 2021-05-12 (produced 2021-05-12T14:00:12+00:00), after the report: assigned (dated 2021-05-11)"}]}],"classification_history":{"330f38d002ccd29a":[{"raw_change_id":186756,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:01:56+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. The tracker saw this range removed from registration on 2022-10-10 (AS399666), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":186756,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:42+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. The tracker saw this range removed from registration on 2022-10-10 (AS399666), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":186756,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:33+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. The tracker saw this range removed from registration on 2022-10-10 (AS399666), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":186756,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:03+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. The tracker saw this range removed from registration on 2022-10-10 (AS399666), so it appears to have been issued again from ARIN's pool."}],"a3fa3c3ac4dcab97":[{"raw_change_id":186755,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:01:56+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS399666. The issuance is explained on that line."},{"raw_change_id":186755,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:42+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS399666. The issuance is explained on that line."},{"raw_change_id":186755,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:33+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS399666. The issuance is explained on that line."},{"raw_change_id":186755,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:03+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2024-04-10 and assigned (dated 2024-04-11) on 2024-04-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS399666. The issuance is explained on that line."}],"7b8c6e7eb407ccb7":[{"raw_change_id":435170,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:54:13+00:00","current":0,"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 assigned (dated 2021-05-11) on 2022-10-09 and reserved on 2022-10-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2023-04-10. This does not confirm availability."},{"raw_change_id":435170,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:01+00:00","current":0,"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 assigned (dated 2021-05-11) on 2022-10-09 and reserved on 2022-10-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2023-04-10. This does not confirm availability."},{"raw_change_id":435170,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:04:58+00:00","current":0,"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 assigned (dated 2021-05-11) on 2022-10-09 and reserved on 2022-10-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2023-04-10. This does not confirm availability."},{"raw_change_id":435170,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:09:50+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 assigned (dated 2021-05-11) on 2022-10-09 and reserved on 2022-10-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2023-04-10. This does not confirm availability."}],"951942257686ce9d":[{"raw_change_id":171341,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:52:27+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-05-10 and assigned (dated 2021-05-11) on 2021-05-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":171341,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:02+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-05-10 and assigned (dated 2021-05-11) on 2021-05-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":171341,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:49+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-05-10 and assigned (dated 2021-05-11) on 2021-05-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":171341,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:09+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-05-10 and assigned (dated 2021-05-11) on 2021-05-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"assigned (dated 2024-04-11)"}}