{"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":"AS29937","resource_type":"asn","page":"https://rirtracker.com/asn/29937/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2020-03-30)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"b17c94ba9ca0b4d9","registry":"ARIN","report_date":"2020-03-30","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS29937","resource_type":"asn","resource":"AS29937","start":29937,"end":29937,"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":"2026-10-13T23:52:48+00:00","page":"https://rirtracker.com/asn/29937/#e-b17c94ba9ca0b4d9","report_page":"https://rirtracker.com/arin/reports/2020-03-30/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/29937.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2020-03-29 and assigned (dated 2020-03-30) on 2020-03-31. The tracker saw this range released from hold on 2020-02-28 (AS29937), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2020-March/004126.html","retrieved_at":"2026-10-12T18:40:50+00:00","summary":"ARIN-Issued report for 2020-03-30: \"Add AS29937\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200329.gz","retrieved_at":"2026-10-12T22:21:36+00:00","summary":"ARIN delegated statistics 2020-03-29 (produced 2020-03-29T14:00:12+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200331.gz","retrieved_at":"2026-10-12T22:21:41+00:00","summary":"ARIN delegated statistics 2020-03-31 (produced 2020-03-31T14:00:13+00:00), after the report: assigned (dated 2020-03-30)"}]},{"event_id":"d0e22dc878a5a614","registry":"ARIN","report_date":"2020-02-28","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS29937","resource_type":"asn","resource":"AS29937","start":29937,"end":29937,"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":"2026-10-13T23:52:46+00:00","page":"https://rirtracker.com/asn/29937/#e-d0e22dc878a5a614","report_page":"https://rirtracker.com/arin/reports/2020-02-28/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/29937.json","explanation":"ARIN's statistics show it reserved on 2020-02-27 and available on 2020-02-29. 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 2016-09-06, 1270 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/2020-February/004095.html","retrieved_at":"2026-10-12T18:40:48+00:00","summary":"ARIN-Issued report for 2020-02-28: \"Remove AS29937\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200227.gz","retrieved_at":"2026-10-12T22:19:48+00:00","summary":"ARIN delegated statistics 2020-02-27 (produced 2020-02-27T15:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200229.gz","retrieved_at":"2026-10-12T22:20:00+00:00","summary":"ARIN delegated statistics 2020-02-29 (produced 2020-02-29T15:00:13+00:00), after the report: available"}]},{"event_id":"1c371549ea613863","registry":"ARIN","report_date":"2016-09-06","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS29937","start":29937,"end":29937,"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":"2026-10-14T00:02:18+00:00","page":"https://rirtracker.com/asn/29937/#e-1c371549ea613863","report_page":"https://rirtracker.com/arin/reports/2016-09-06/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/29937.json","observed":"AS29937 assigned on 2016-09-06, reserved on 2016-09-07","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":"2017-03-06","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 2010-04-21) on 2016-09-05 and reserved on 2016-09-07. 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 2017-03-06. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160907.gz","retrieved_at":"2026-10-12T21:15:58+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS29937 assigned on 2016-09-06, reserved on 2016-09-07"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160905.gz","retrieved_at":"2026-10-12T21:15:53+00:00","summary":"ARIN delegated statistics 2016-09-05 (produced 2016-09-05T05:09:48+00:00), before the report: assigned (dated 2010-04-21)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160907.gz","retrieved_at":"2026-10-12T21:15:58+00:00","summary":"ARIN delegated statistics 2016-09-07 (produced 2016-09-07T05:09:28+00:00), after the report: reserved"}]},{"event_id":"cf970b08a4e67c0e","registry":"ARIN","report_date":"2009-04-14","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS29937","start":29937,"end":29937,"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":"2026-10-13T23:55:00+00:00","page":"https://rirtracker.com/asn/29937/#e-cf970b08a4e67c0e","report_page":"https://rirtracker.com/arin/reports/2009-04-14/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/29937.json","observed":"AS29937 allocated on 2009-04-14, not listed on 2009-04-15","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":"2009-10-14","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 2003-06-12) on 2009-04-13 and not issued on 2009-04-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2009-10-14. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090415.gz","retrieved_at":"2026-10-12T18:48:58+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS29937 allocated on 2009-04-14, not listed on 2009-04-15"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090413.gz","retrieved_at":"2026-10-12T18:48:53+00:00","summary":"ARIN delegated statistics 2009-04-13, before the report: allocated (dated 2003-06-12)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090415.gz","retrieved_at":"2026-10-12T18:48:58+00:00","summary":"ARIN delegated statistics 2009-04-15, after the report: not issued"}]}],"classification_history":{"b17c94ba9ca0b4d9":[{"raw_change_id":164819,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:47:44+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2020-03-29 and assigned (dated 2020-03-30) on 2020-03-31. The tracker saw this range released from hold on 2020-02-28 (AS29937), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":164819,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:46+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2020-03-29 and assigned (dated 2020-03-30) on 2020-03-31. The tracker saw this range released from hold on 2020-02-28 (AS29937), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":164819,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:31+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2020-03-29 and assigned (dated 2020-03-30) on 2020-03-31. The tracker saw this range released from hold on 2020-02-28 (AS29937), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":164819,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:48+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2020-03-29 and assigned (dated 2020-03-30) on 2020-03-31. The tracker saw this range released from hold on 2020-02-28 (AS29937), so it appears to have been issued again from ARIN's pool."}],"d0e22dc878a5a614":[{"raw_change_id":164273,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:47:24+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-02-27 and available on 2020-02-29. 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 2016-09-06, 1270 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":164273,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:45+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-02-27 and available on 2020-02-29. 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 2016-09-06, 1270 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":164273,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:29+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-02-27 and available on 2020-02-29. 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 2016-09-06, 1270 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":164273,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:46+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2020-02-27 and available on 2020-02-29. 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 2016-09-06, 1270 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."}],"1c371549ea613863":[{"raw_change_id":322816,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:06:10+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 2010-04-21) on 2016-09-05 and reserved on 2016-09-07. 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 2017-03-06. This does not confirm availability."},{"raw_change_id":322816,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:14:46+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 2010-04-21) on 2016-09-05 and reserved on 2016-09-07. 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 2017-03-06. This does not confirm availability."},{"raw_change_id":322816,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:15+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 2010-04-21) on 2016-09-05 and reserved on 2016-09-07. 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 2017-03-06. This does not confirm availability."},{"raw_change_id":322816,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:18+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 2010-04-21) on 2016-09-05 and reserved on 2016-09-07. 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 2017-03-06. This does not confirm availability."}],"cf970b08a4e67c0e":[{"raw_change_id":203791,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:10:32+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 allocated (dated 2003-06-12) on 2009-04-13 and not issued on 2009-04-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2009-10-14. This does not confirm availability."},{"raw_change_id":203791,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:27+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 allocated (dated 2003-06-12) on 2009-04-13 and not issued on 2009-04-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2009-10-14. This does not confirm availability."},{"raw_change_id":203791,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:24+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 allocated (dated 2003-06-12) on 2009-04-13 and not issued on 2009-04-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2009-10-14. This does not confirm availability."},{"raw_change_id":203791,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:00+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 2003-06-12) on 2009-04-13 and not issued on 2009-04-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2009-10-14. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2020-03-30)"}}