{"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":"AS400309","resource_type":"asn","page":"https://rirtracker.com/asn/400309/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2021-12-16)"},"current_holder":{"rir":"ARIN","org":"Vault Host","handle":"VH-184","how":"RDAP, looked up 2026-11-11 18:21 UTC"},"rdap_snapshots":[{"resource_type":"asn","start_key":"00000000000000000000000000061bb5","end_key":"00000000000000000000000000061bb5","captured_at":"2026-11-11T18:21:48+00:00","reason":"24h","authoritative_rir":"ARIN","handle":"AS400309","name":"VAULT-HOST-SGP","status":"active","org_handle":"VH-184","org_name":"Vault Host","registration_date":"2021-12-16T11:01:25-05:00","last_changed_date":"2026-11-10T15:53:46-05:00","rdap_url":"https://rdap.arin.net/registry/autnum/400309"},{"resource_type":"asn","start_key":"00000000000000000000000000061bb5","end_key":"00000000000000000000000000061bb5","captured_at":"2026-11-10T18:21:36+00:00","reason":"first","authoritative_rir":"ARIN","rdap_url":"https://rdap.arin.net/registry/autnum/400309","error":"not registered (RDAP 404)"}],"transfers":[{"id":4611,"date":"2025-07-09T15:54:17Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"LayerHost","recipient_org":"Vault Host","range":"AS400309","log":"ARIN"}],"events":[{"event_id":"381e29bd89def6da","registry":"ARIN","report_date":"2026-11-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS400309","start":400309,"end":400309,"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":true,"classifier_version":"1.4.0","classified_at":"2026-11-10T18:27:02+00:00","page":"https://rirtracker.com/asn/400309/#e-381e29bd89def6da","report_page":"https://rirtracker.com/arin/reports/2026-11-09/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/400309.json","observed":"AS400309 assigned on 2026-11-09, reserved on 2026-11-10","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":"2027-05-09","availability_statement":"Possible reissue candidate after this date; not confirmed available","released_sooner_since":"2024-07-01"},"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 2021-12-16) on 2026-11-08 and reserved on 2026-11-10. 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 2027-05-09. This does not confirm availability. Since mid-2024, ARIN has released many ASNs within two months, before the 6 calendar months were up, so the release can come sooner.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261110","retrieved_at":"2026-11-10T18:17:13+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS400309 assigned on 2026-11-09, reserved on 2026-11-10"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261108","retrieved_at":"2026-11-08T18:17:14+00:00","summary":"ARIN delegated statistics 2026-11-08 (produced 2026-11-08T14:00:21+00:00), before the report: assigned (dated 2021-12-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261110","retrieved_at":"2026-11-10T18:17:13+00:00","summary":"ARIN delegated statistics 2026-11-10 (produced 2026-11-10T14:00:21+00:00), after the report: reserved"}]},{"event_id":"e0f7a6e241e417a0","registry":"ARIN","report_date":"2025-07-09","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS400309","start":400309,"end":400309,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"LayerHost","recipient_organization":"Vault Host","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:22+00:00","page":"https://rirtracker.com/asn/400309/#e-e0f7a6e241e417a0","report_page":"https://rirtracker.com/arin/reports/2025-07-09/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/400309.json","observed":"Merger/acquisition: LayerHost (ARIN) to Vault Host (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from LayerHost (ARIN) to Vault Host (ARIN) on 2025-07-09 15:54 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2025-07-09 15:54 UTC, LayerHost (ARIN) to Vault Host (ARIN); resources moved: AS400309"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250708.gz","retrieved_at":"2026-10-13T00:02:53+00:00","summary":"ARIN delegated statistics 2025-07-08 (produced 2025-07-08T13:01:12+00:00), before the report: assigned (dated 2021-12-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250710.gz","retrieved_at":"2026-10-13T00:02:58+00:00","summary":"ARIN delegated statistics 2025-07-10 (produced 2025-07-10T13:01:14+00:00), after the report: assigned (dated 2021-12-16)"}]},{"event_id":"cd8d4159dbe91557","registry":"ARIN","report_date":"2021-12-16","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS400309","resource_type":"asn","resource":"AS400309","start":400309,"end":400309,"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":"2026-10-13T23:53:18+00:00","page":"https://rirtracker.com/asn/400309/#e-cd8d4159dbe91557","report_page":"https://rirtracker.com/arin/reports/2021-12-16/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/400309.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2021-12-15 and assigned (dated 2021-12-16) on 2021-12-17. 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-December/004752.html","retrieved_at":"2026-10-12T18:41:34+00:00","summary":"ARIN-Issued report for 2021-12-16: \"Add AS400309\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211215.gz","retrieved_at":"2026-10-12T22:53:43+00:00","summary":"ARIN delegated statistics 2021-12-15 (produced 2021-12-15T14:00:13+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211217.gz","retrieved_at":"2026-10-12T22:53:58+00:00","summary":"ARIN delegated statistics 2021-12-17 (produced 2021-12-17T14:00:12+00:00), after the report: assigned (dated 2021-12-16)"}]}],"classification_history":{"381e29bd89def6da":[{"raw_change_id":580116,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-11-10T18:27:02+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 2021-12-16) on 2026-11-08 and reserved on 2026-11-10. 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 2027-05-09. This does not confirm availability. Since mid-2024, ARIN has released many ASNs within two months, before the 6 calendar months were up, so the release can come sooner."}],"e0f7a6e241e417a0":[{"raw_change_id":574032,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:22+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from LayerHost (ARIN) to Vault Host (ARIN) on 2025-07-09 15:54 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"cd8d4159dbe91557":[{"raw_change_id":174413,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:54:32+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-12-15 and assigned (dated 2021-12-16) on 2021-12-17. 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":174413,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:09+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-12-15 and assigned (dated 2021-12-16) on 2021-12-17. 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":174413,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:56+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-12-15 and assigned (dated 2021-12-16) on 2021-12-17. 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":174413,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:18+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2021-12-15 and assigned (dated 2021-12-16) on 2021-12-17. 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 2021-12-16)"}}