{"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":"AS31850","resource_type":"asn","page":"https://rirtracker.com/asn/31850/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2025-12-24)"},"current_holder":{"rir":"ARIN","org":"MSCAL","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":4877,"date":"2025-12-24T17:52:42Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Swift & Staley Inc.","recipient_org":"MSCAL","range":"AS31850","log":"ARIN"}],"events":[{"event_id":"0d4dda2a1aa973c0","registry":"ARIN","report_date":"2025-12-24","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS31850","resource_type":"asn","resource":"AS31850","start":31850,"end":31850,"classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Swift & Staley Inc.","recipient_organization":"MSCAL","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:43+00:00","page":"https://rirtracker.com/asn/31850/#e-0d4dda2a1aa973c0","report_page":"https://rirtracker.com/arin/reports/2025-12-24/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31850.json","explanation":"ARIN's transfer log records a transfer from Swift & Staley Inc. (ARIN) to MSCAL (ARIN) on 2025-12-24 17:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2025-December/006220.html","retrieved_at":"2026-10-12T18:43:16+00:00","summary":"ARIN-Issued report for 2025-12-24: \"Add AS31850\""},{"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: RESOURCE_TRANSFER on 2025-12-24 17:52 UTC, Swift & Staley Inc. (ARIN) to MSCAL (ARIN); resources moved: AS31850"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251223.gz","retrieved_at":"2026-10-13T00:12:13+00:00","summary":"ARIN delegated statistics 2025-12-23 (produced 2025-12-23T14:00:48+00:00), before the report: assigned (dated 2023-12-12)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251225.gz","retrieved_at":"2026-10-13T00:12:18+00:00","summary":"ARIN delegated statistics 2025-12-25 (produced 2025-12-25T14:00:48+00:00), after the report: assigned (dated 2025-12-24)"}]},{"event_id":"3553b1f848cc30c1","registry":"ARIN","report_date":"2023-12-12","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS31850","resource_type":"asn","resource":"AS31850","start":31850,"end":31850,"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":"2026-10-13T23:53:54+00:00","page":"https://rirtracker.com/asn/31850/#e-3553b1f848cc30c1","report_page":"https://rirtracker.com/arin/reports/2023-12-12/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31850.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2023-12-11 and assigned (dated 2023-12-12) on 2023-12-13. The tracker saw this range released from hold on 2023-12-05 (AS31850), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2023-December/005478.html","retrieved_at":"2026-10-12T18:42:25+00:00","summary":"ARIN-Issued report for 2023-12-12: \"Add AS31850\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231211.gz","retrieved_at":"2026-10-12T23:31:42+00:00","summary":"ARIN delegated statistics 2023-12-11 (produced 2023-12-11T14:00:34+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231213.gz","retrieved_at":"2026-10-12T23:31:47+00:00","summary":"ARIN delegated statistics 2023-12-13 (produced 2023-12-13T14:00:33+00:00), after the report: assigned (dated 2023-12-12)"}]},{"event_id":"125f1a0dbe1701dd","registry":"ARIN","report_date":"2023-12-05","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS31850","resource_type":"asn","resource":"AS31850","start":31850,"end":31850,"classification":"HOLD_RELEASED","classification_label":"Released from hold (ARIN lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"ARIN's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:54+00:00","page":"https://rirtracker.com/asn/31850/#e-125f1a0dbe1701dd","report_page":"https://rirtracker.com/arin/reports/2023-12-05/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31850.json","explanation":"ARIN's statistics show it reserved on 2023-12-04 and available on 2023-12-06. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2023-01-09, 330 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2023-December/005471.html","retrieved_at":"2026-10-12T18:42:25+00:00","summary":"ARIN-Issued report for 2023-12-05: \"Remove AS31850\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231204.gz","retrieved_at":"2026-10-12T23:31:24+00:00","summary":"ARIN delegated statistics 2023-12-04 (produced 2023-12-04T14:00:34+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231206.gz","retrieved_at":"2026-10-12T23:31:29+00:00","summary":"ARIN delegated statistics 2023-12-06 (produced 2023-12-06T14:00:33+00:00), after the report: available"}]},{"event_id":"1bb0042839602663","registry":"ARIN","report_date":"2023-01-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS31850","start":31850,"end":31850,"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":"2026-10-14T00:10:07+00:00","page":"https://rirtracker.com/asn/31850/#e-1bb0042839602663","report_page":"https://rirtracker.com/arin/reports/2023-01-09/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31850.json","observed":"AS31850 assigned on 2023-01-09, reserved on 2023-01-10","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":"2023-07-09","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 2004-01-09) on 2023-01-08 and reserved on 2023-01-10. 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 2023-07-09. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230110.gz","retrieved_at":"2026-10-12T23:13:58+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS31850 assigned on 2023-01-09, reserved on 2023-01-10"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230108.gz","retrieved_at":"2026-10-12T23:13:53+00:00","summary":"ARIN delegated statistics 2023-01-08 (produced 2023-01-08T14:00:11+00:00), before the report: assigned (dated 2004-01-09)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230110.gz","retrieved_at":"2026-10-12T23:13:58+00:00","summary":"ARIN delegated statistics 2023-01-10 (produced 2023-01-10T14:00:11+00:00), after the report: reserved"}]}],"classification_history":{"0d4dda2a1aa973c0":[{"raw_change_id":198517,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:08:59+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Swift & Staley Inc. (ARIN) to MSCAL (ARIN) on 2025-12-24 17:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":198517,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:11+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Swift & Staley Inc. (ARIN) to MSCAL (ARIN) on 2025-12-24 17:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":198517,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:07+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Swift & Staley Inc. (ARIN) to MSCAL (ARIN) on 2025-12-24 17:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":198517,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:43+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Swift & Staley Inc. (ARIN) to MSCAL (ARIN) on 2025-12-24 17:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"3553b1f848cc30c1":[{"raw_change_id":184547,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:00:37+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2023-12-11 and assigned (dated 2023-12-12) on 2023-12-13. The tracker saw this range released from hold on 2023-12-05 (AS31850), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":184547,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:36+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2023-12-11 and assigned (dated 2023-12-12) on 2023-12-13. The tracker saw this range released from hold on 2023-12-05 (AS31850), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":184547,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:26+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2023-12-11 and assigned (dated 2023-12-12) on 2023-12-13. The tracker saw this range released from hold on 2023-12-05 (AS31850), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":184547,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:54+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2023-12-11 and assigned (dated 2023-12-12) on 2023-12-13. The tracker saw this range released from hold on 2023-12-05 (AS31850), so it appears to have been issued again from ARIN's pool."}],"125f1a0dbe1701dd":[{"raw_change_id":184440,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:00:33+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2023-12-04 and available on 2023-12-06. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2023-01-09, 330 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":184440,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:35+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2023-12-04 and available on 2023-12-06. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2023-01-09, 330 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":184440,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:26+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2023-12-04 and available on 2023-12-06. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2023-01-09, 330 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":184440,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:54+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2023-12-04 and available on 2023-12-06. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2023-01-09, 330 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."}],"1bb0042839602663":[{"raw_change_id":439289,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:55:58+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 2004-01-09) on 2023-01-08 and reserved on 2023-01-10. 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 earliest estimated hold expiration is 2023-07-09. This does not confirm availability."},{"raw_change_id":439289,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:16+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 2004-01-09) on 2023-01-08 and reserved on 2023-01-10. 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 earliest estimated hold expiration is 2023-07-09. This does not confirm availability."},{"raw_change_id":439289,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:05:13+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 2004-01-09) on 2023-01-08 and reserved on 2023-01-10. 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 earliest estimated hold expiration is 2023-07-09. This does not confirm availability."},{"raw_change_id":439289,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:07+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 2004-01-09) on 2023-01-08 and reserved on 2023-01-10. 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 2023-07-09. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2025-12-24)"}}