{"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":"AS22538","resource_type":"asn","page":"https://rirtracker.com/asn/22538/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2026-10-26)"},"current_holder":{"rir":"ARIN","org":"IBM Business Consulting Services","handle":"INTER-1188","how":"RDAP, looked up 2026-11-03 18:19 UTC"},"rdap_snapshots":[{"resource_type":"asn","start_key":"0000000000000000000000000000580a","end_key":"0000000000000000000000000000580a","captured_at":"2026-11-03T18:19:22+00:00","reason":"7d","authoritative_rir":"ARIN","handle":"AS22538","name":"IBM-CIOUS","status":"active","org_handle":"INTER-1188","org_name":"IBM Business Consulting Services","registration_date":"2026-10-26T16:08:21-04:00","last_changed_date":"2026-10-26T16:08:21-04:00","rdap_url":"https://rdap.arin.net/registry/autnum/22538"},{"resource_type":"asn","start_key":"0000000000000000000000000000580a","end_key":"0000000000000000000000000000580a","captured_at":"2026-11-03T18:19:21+00:00","reason":"7d","authoritative_rir":"ARIN","handle":"AS22538","name":"IBM-CIOUS","status":"active","org_handle":"INTER-1188","org_name":"IBM Business Consulting Services","registration_date":"2026-10-26T16:08:21-04:00","last_changed_date":"2026-10-26T16:08:21-04:00","rdap_url":"https://rdap.arin.net/registry/autnum/22538"},{"resource_type":"asn","start_key":"0000000000000000000000000000580a","end_key":"0000000000000000000000000000580a","captured_at":"2026-10-29T18:20:47+00:00","reason":"24h","authoritative_rir":"ARIN","handle":"AS22538","name":"IBM-CIOUS","status":"active","org_handle":"INTER-1188","org_name":"IBM Business Consulting Services","registration_date":"2026-10-26T16:08:21-04:00","last_changed_date":"2026-10-26T16:08:21-04:00","rdap_url":"https://rdap.arin.net/registry/autnum/22538"},{"resource_type":"asn","start_key":"0000000000000000000000000000580a","end_key":"0000000000000000000000000000580a","captured_at":"2026-10-29T18:20:45+00:00","reason":"24h","authoritative_rir":"ARIN","handle":"AS22538","name":"IBM-CIOUS","status":"active","org_handle":"INTER-1188","org_name":"IBM Business Consulting Services","registration_date":"2026-10-26T16:08:21-04:00","last_changed_date":"2026-10-26T16:08:21-04:00","rdap_url":"https://rdap.arin.net/registry/autnum/22538"},{"resource_type":"asn","start_key":"0000000000000000000000000000580a","end_key":"0000000000000000000000000000580a","captured_at":"2026-10-27T18:22:29+00:00","reason":"first","authoritative_rir":"ARIN","handle":"AS22538","name":"IBM-CIOUS","status":"active","org_handle":"INTER-1188","org_name":"IBM Business Consulting Services","registration_date":"2026-10-26T16:08:21-04:00","last_changed_date":"2026-10-26T16:08:21-04:00","rdap_url":"https://rdap.arin.net/registry/autnum/22538"},{"resource_type":"asn","start_key":"0000000000000000000000000000580a","end_key":"0000000000000000000000000000580a","captured_at":"2026-10-27T18:22:28+00:00","reason":"first","authoritative_rir":"ARIN","handle":"AS22538","name":"IBM-CIOUS","status":"active","org_handle":"INTER-1188","org_name":"IBM Business Consulting Services","registration_date":"2026-10-26T16:08:21-04:00","last_changed_date":"2026-10-26T16:08:21-04:00","rdap_url":"https://rdap.arin.net/registry/autnum/22538"}],"transfers":[],"events":[{"event_id":"721f68addb83ab66","registry":"ARIN","report_date":"2026-10-26","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS22538","resource_type":"asn","resource":"AS22538","start":22538,"end":22538,"classification":"RESTORED","classification_label":"Restored to the same holder","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-27T18:27:08+00:00","page":"https://rirtracker.com/asn/22538/#e-721f68addb83ab66","report_page":"https://rirtracker.com/arin/reports/2026-10-26/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/22538.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-10-25 and assigned (dated 2026-10-26) on 2026-10-27. The tracker saw it removed from registration on 2018-04-10 (3121 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2026-October/006530.html","retrieved_at":"2026-10-27T18:17:05+00:00","summary":"ARIN-Issued report for 2026-10-26: \"Add AS22538\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261025","retrieved_at":"2026-10-25T18:17:13+00:00","summary":"ARIN delegated statistics 2026-10-25 (produced 2026-10-25T13:00:21+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261027","retrieved_at":"2026-10-27T18:17:14+00:00","summary":"ARIN delegated statistics 2026-10-27 (produced 2026-10-27T13:00:21+00:00), after the report: assigned (dated 2026-10-26)"}]},{"event_id":"e132177be6a2ce90","registry":"ARIN","report_date":"2026-10-26","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS22538","resource_type":"asn","resource":"AS22538","start":22538,"end":22538,"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":"2026-10-27T18:27:08+00:00","page":"https://rirtracker.com/asn/22538/#e-e132177be6a2ce90","report_page":"https://rirtracker.com/arin/reports/2026-10-26/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/22538.json","explanation":"ARIN's statistics show it reserved on 2026-10-25 and assigned (dated 2026-10-26) on 2026-10-27. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS22538. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2026-October/006530.html","retrieved_at":"2026-10-27T18:17:05+00:00","summary":"ARIN-Issued report for 2026-10-26: \"Remove AS22538\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261025","retrieved_at":"2026-10-25T18:17:13+00:00","summary":"ARIN delegated statistics 2026-10-25 (produced 2026-10-25T13:00:21+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261027","retrieved_at":"2026-10-27T18:17:14+00:00","summary":"ARIN delegated statistics 2026-10-27 (produced 2026-10-27T13:00:21+00:00), after the report: assigned (dated 2026-10-26)"}]},{"event_id":"3ac0dc557fae3d30","registry":"ARIN","report_date":"2018-04-10","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS22538","start":22538,"end":22538,"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":"2026-10-14T00:04:09+00:00","page":"https://rirtracker.com/asn/22538/#e-3ac0dc557fae3d30","report_page":"https://rirtracker.com/arin/reports/2018-04-10/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/22538.json","observed":"AS22538 assigned on 2018-04-10, reserved on 2018-04-11","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":"2018-10-10","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 2009-11-06) on 2018-04-09 and reserved on 2018-04-11. 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 2018-10-10. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180411.gz","retrieved_at":"2026-10-12T21:44:30+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS22538 assigned on 2018-04-10, reserved on 2018-04-11"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180409.gz","retrieved_at":"2026-10-12T21:44:25+00:00","summary":"ARIN delegated statistics 2018-04-09 (produced 2018-04-09T05:11:44+00:00), before the report: assigned (dated 2009-11-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180411.gz","retrieved_at":"2026-10-12T21:44:30+00:00","summary":"ARIN delegated statistics 2018-04-11 (produced 2018-04-11T05:11:41+00:00), after the report: reserved"}]}],"classification_history":{"721f68addb83ab66":[{"raw_change_id":578803,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-27T18:27:08+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2026-10-25 and assigned (dated 2026-10-26) on 2026-10-27. The tracker saw it removed from registration on 2018-04-10 (3121 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."}],"e132177be6a2ce90":[{"raw_change_id":578802,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-27T18:27:08+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2026-10-25 and assigned (dated 2026-10-26) on 2026-10-27. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS22538. The issuance is explained on that line."}],"3ac0dc557fae3d30":[{"raw_change_id":351758,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:20:23+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 2009-11-06) on 2018-04-09 and reserved on 2018-04-11. 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 2018-10-10. This does not confirm availability."},{"raw_change_id":351758,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:16:19+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 2009-11-06) on 2018-04-09 and reserved on 2018-04-11. 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 2018-10-10. This does not confirm availability."},{"raw_change_id":351758,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:55+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 2009-11-06) on 2018-04-09 and reserved on 2018-04-11. 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 2018-10-10. This does not confirm availability."},{"raw_change_id":351758,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:04:09+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 2009-11-06) on 2018-04-09 and reserved on 2018-04-11. 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 2018-10-10. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2026-10-26)"}}