{"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":"AS19977","resource_type":"asn","page":"https://rirtracker.com/asn/19977/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2016-08-02)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"1a9a7dc0a50224f3","registry":"ARIN","report_date":"2016-08-02","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS19977","resource_type":"asn","resource":"AS19977","start":19977,"end":19977,"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":"2026-10-13T23:51:37+00:00","page":"https://rirtracker.com/asn/19977/#e-1a9a7dc0a50224f3","report_page":"https://rirtracker.com/arin/reports/2016-08-02/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/19977.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. The tracker saw this range removed from registration on 2014-08-05 (AS19977), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2016-August/002791.html","retrieved_at":"2026-10-12T18:39:19+00:00","summary":"ARIN-Issued report for 2016-08-02: \"Add AS19977\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160801.gz","retrieved_at":"2026-10-12T21:14:04+00:00","summary":"ARIN delegated statistics 2016-08-01 (produced 2016-08-01T05:09:37+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160803.gz","retrieved_at":"2026-10-12T21:14:09+00:00","summary":"ARIN delegated statistics 2016-08-03 (produced 2016-08-03T05:09:51+00:00), after the report: assigned (dated 2016-08-02)"}]},{"event_id":"cbf4ec037eac9358","registry":"ARIN","report_date":"2016-08-02","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS19977","resource_type":"asn","resource":"AS19977","start":19977,"end":19977,"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":"2026-10-13T23:51:37+00:00","page":"https://rirtracker.com/asn/19977/#e-cbf4ec037eac9358","report_page":"https://rirtracker.com/arin/reports/2016-08-02/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/19977.json","explanation":"ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS19977. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2016-August/002791.html","retrieved_at":"2026-10-12T18:39:19+00:00","summary":"ARIN-Issued report for 2016-08-02: \"Remove AS19977\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160801.gz","retrieved_at":"2026-10-12T21:14:04+00:00","summary":"ARIN delegated statistics 2016-08-01 (produced 2016-08-01T05:09:37+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160803.gz","retrieved_at":"2026-10-12T21:14:09+00:00","summary":"ARIN delegated statistics 2016-08-03 (produced 2016-08-03T05:09:51+00:00), after the report: assigned (dated 2016-08-02)"}]},{"event_id":"2db5aec27221a1d9","registry":"ARIN","report_date":"2014-08-05","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS19977","start":19977,"end":19977,"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":"2026-10-13T23:59:57+00:00","page":"https://rirtracker.com/asn/19977/#e-2db5aec27221a1d9","report_page":"https://rirtracker.com/arin/reports/2014-08-05/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/19977.json","observed":"AS19977 assigned on 2014-08-05, reserved on 2014-08-06","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":"2015-02-05","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 2001-03-12) on 2014-08-04 and reserved on 2014-08-06. 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 2015-02-05. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140806.gz","retrieved_at":"2026-10-12T20:39:04+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS19977 assigned on 2014-08-05, reserved on 2014-08-06"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140804.gz","retrieved_at":"2026-10-12T20:38:59+00:00","summary":"ARIN delegated statistics 2014-08-04 (produced 2014-08-04T05:04:41+00:00), before the report: assigned (dated 2001-03-12)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140806.gz","retrieved_at":"2026-10-12T20:39:04+00:00","summary":"ARIN delegated statistics 2014-08-06 (produced 2014-08-06T05:04:56+00:00), after the report: reserved"}]}],"classification_history":{"1a9a7dc0a50224f3":[{"raw_change_id":145773,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:45+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. The tracker saw this range removed from registration on 2014-08-05 (AS19977), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":145773,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:52+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. The tracker saw this range removed from registration on 2014-08-05 (AS19977), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":145773,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:31+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. The tracker saw this range removed from registration on 2014-08-05 (AS19977), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":145773,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:37+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. The tracker saw this range removed from registration on 2014-08-05 (AS19977), so it appears to have been issued again from ARIN's pool."}],"cbf4ec037eac9358":[{"raw_change_id":145772,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:45+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS19977. The issuance is explained on that line."},{"raw_change_id":145772,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:52+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS19977. The issuance is explained on that line."},{"raw_change_id":145772,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:31+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS19977. The issuance is explained on that line."},{"raw_change_id":145772,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:37+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2016-08-01 and assigned (dated 2016-08-02) on 2016-08-03. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS19977. The issuance is explained on that line."}],"2db5aec27221a1d9":[{"raw_change_id":287728,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:50:31+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 2001-03-12) on 2014-08-04 and reserved on 2014-08-06. 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 2015-02-05. This does not confirm availability."},{"raw_change_id":287728,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:12:45+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 2001-03-12) on 2014-08-04 and reserved on 2014-08-06. 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 2015-02-05. This does not confirm availability."},{"raw_change_id":287728,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:56:05+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 2001-03-12) on 2014-08-04 and reserved on 2014-08-06. 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 2015-02-05. This does not confirm availability."},{"raw_change_id":287728,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:59:57+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 2001-03-12) on 2014-08-04 and reserved on 2014-08-06. 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 2015-02-05. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2016-08-02)"}}