{"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":"AS20138","resource_type":"asn","page":"https://rirtracker.com/asn/20138/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2020-09-16)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"7646c18c1b2e63e1","registry":"ARIN","report_date":"2020-09-16","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS20138","resource_type":"asn","resource":"AS20138","start":20138,"end":20138,"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":"2026-10-13T23:52:57+00:00","page":"https://rirtracker.com/asn/20138/#e-7646c18c1b2e63e1","report_page":"https://rirtracker.com/arin/reports/2020-09-16/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/20138.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. The tracker saw this range removed from registration on 2016-12-06 (AS20138), 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-September/004296.html","retrieved_at":"2026-10-12T18:41:02+00:00","summary":"ARIN-Issued report for 2020-09-16: \"Add AS20138\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200915.gz","retrieved_at":"2026-10-12T22:30:19+00:00","summary":"ARIN delegated statistics 2020-09-15 (produced 2020-09-15T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200917.gz","retrieved_at":"2026-10-12T22:30:24+00:00","summary":"ARIN delegated statistics 2020-09-17 (produced 2020-09-17T14:00:13+00:00), after the report: assigned (dated 2020-09-16)"}]},{"event_id":"367c848cf6fa0ba2","registry":"ARIN","report_date":"2020-09-16","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS20138","resource_type":"asn","resource":"AS20138","start":20138,"end":20138,"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":"2026-10-13T23:52:56+00:00","page":"https://rirtracker.com/asn/20138/#e-367c848cf6fa0ba2","report_page":"https://rirtracker.com/arin/reports/2020-09-16/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/20138.json","explanation":"ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS20138. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2020-September/004296.html","retrieved_at":"2026-10-12T18:41:02+00:00","summary":"ARIN-Issued report for 2020-09-16: \"Remove AS20138\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200915.gz","retrieved_at":"2026-10-12T22:30:19+00:00","summary":"ARIN delegated statistics 2020-09-15 (produced 2020-09-15T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200917.gz","retrieved_at":"2026-10-12T22:30:24+00:00","summary":"ARIN delegated statistics 2020-09-17 (produced 2020-09-17T14:00:13+00:00), after the report: assigned (dated 2020-09-16)"}]},{"event_id":"6bf8f9f787ebc503","registry":"ARIN","report_date":"2016-12-06","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS20138","start":20138,"end":20138,"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":"2026-10-14T00:02:32+00:00","page":"https://rirtracker.com/asn/20138/#e-6bf8f9f787ebc503","report_page":"https://rirtracker.com/arin/reports/2016-12-06/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/20138.json","observed":"AS20138 assigned on 2016-12-06, reserved on 2016-12-07","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":"2017-06-06","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 2010-07-16) on 2016-12-05 and reserved on 2016-12-07. 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 2017-06-06. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161207.gz","retrieved_at":"2026-10-12T21:20:27+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS20138 assigned on 2016-12-06, reserved on 2016-12-07"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161205.gz","retrieved_at":"2026-10-12T21:20:22+00:00","summary":"ARIN delegated statistics 2016-12-05 (produced 2016-12-05T06:09:48+00:00), before the report: assigned (dated 2010-07-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161207.gz","retrieved_at":"2026-10-12T21:20:27+00:00","summary":"ARIN delegated statistics 2016-12-07 (produced 2016-12-07T06:10:57+00:00), after the report: reserved"}]},{"event_id":"5f0dd81fb1a4046c","registry":"ARIN","report_date":"2009-07-13","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS20138","start":20138,"end":20138,"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":"2026-10-13T23:55:10+00:00","page":"https://rirtracker.com/asn/20138/#e-5f0dd81fb1a4046c","report_page":"https://rirtracker.com/arin/reports/2009-07-13/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/20138.json","observed":"AS20138 allocated on 2009-07-13, not listed on 2009-07-14","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":"2010-01-13","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 2001-03-29) on 2009-07-12 and not issued on 2009-07-14. (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 2010-01-13. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090714.gz","retrieved_at":"2026-10-12T18:52:40+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS20138 allocated on 2009-07-13, not listed on 2009-07-14"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090712.gz","retrieved_at":"2026-10-12T18:52:36+00:00","summary":"ARIN delegated statistics 2009-07-12, before the report: allocated (dated 2001-03-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090714.gz","retrieved_at":"2026-10-12T18:52:40+00:00","summary":"ARIN delegated statistics 2009-07-14, after the report: not issued"}]}],"classification_history":{"7646c18c1b2e63e1":[{"raw_change_id":167300,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:49:31+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. The tracker saw this range removed from registration on 2016-12-06 (AS20138), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":167300,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:53+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. The tracker saw this range removed from registration on 2016-12-06 (AS20138), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":167300,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:38+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. The tracker saw this range removed from registration on 2016-12-06 (AS20138), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":167300,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:57+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. The tracker saw this range removed from registration on 2016-12-06 (AS20138), so it appears to have been issued again from ARIN's pool."}],"367c848cf6fa0ba2":[{"raw_change_id":167226,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:49:30+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS20138. The issuance is explained on that line."},{"raw_change_id":167226,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:52+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS20138. The issuance is explained on that line."},{"raw_change_id":167226,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:38+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS20138. The issuance is explained on that line."},{"raw_change_id":167226,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:56+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2020-09-15 and assigned (dated 2020-09-16) on 2020-09-17. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS20138. The issuance is explained on that line."}],"6bf8f9f787ebc503":[{"raw_change_id":326494,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:07:51+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 2010-07-16) on 2016-12-05 and reserved on 2016-12-07. 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 2017-06-06. This does not confirm availability."},{"raw_change_id":326494,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:14:58+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 2010-07-16) on 2016-12-05 and reserved on 2016-12-07. 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 2017-06-06. This does not confirm availability."},{"raw_change_id":326494,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:27+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 assigned (dated 2010-07-16) on 2016-12-05 and reserved on 2016-12-07. 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 2017-06-06. This does not confirm availability."},{"raw_change_id":326494,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:32+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 2010-07-16) on 2016-12-05 and reserved on 2016-12-07. 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 2017-06-06. This does not confirm availability."}],"5f0dd81fb1a4046c":[{"raw_change_id":206674,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:11:30+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 2001-03-29) on 2009-07-12 and not issued on 2009-07-14. (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 2010-01-13. This does not confirm availability."},{"raw_change_id":206674,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:36+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 2001-03-29) on 2009-07-12 and not issued on 2009-07-14. (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 2010-01-13. This does not confirm availability."},{"raw_change_id":206674,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:33+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 2001-03-29) on 2009-07-12 and not issued on 2009-07-14. (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 2010-01-13. This does not confirm availability."},{"raw_change_id":206674,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:10+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 2001-03-29) on 2009-07-12 and not issued on 2009-07-14. (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 2010-01-13. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2020-09-16)"}}