{"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":"AS21681","resource_type":"asn","page":"https://rirtracker.com/asn/21681/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2018-05-02)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"ebe1ca2b77cc82d2","registry":"ARIN","report_date":"2018-05-02","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS21681","resource_type":"asn","resource":"AS21681","start":21681,"end":21681,"classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:52:09+00:00","page":"https://rirtracker.com/asn/21681/#e-ebe1ca2b77cc82d2","report_page":"https://rirtracker.com/arin/reports/2018-05-02/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/21681.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-01 and assigned (dated 2018-05-02) on 2018-05-03. The tracker saw this range released from hold on 2018-05-01 (AS21681), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2018-05-01: Remove AS21681), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-May/003430.html","retrieved_at":"2026-10-12T18:40:03+00:00","summary":"ARIN-Issued report for 2018-05-02: \"Add AS21681\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180501.gz","retrieved_at":"2026-10-12T21:45:35+00:00","summary":"ARIN delegated statistics 2018-05-01 (produced 2018-05-01T05:10:30+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180503.gz","retrieved_at":"2026-10-12T21:45:40+00:00","summary":"ARIN delegated statistics 2018-05-03 (produced 2018-05-03T05:11:53+00:00), after the report: assigned (dated 2018-05-02)"}]},{"event_id":"9cb14652e63300e9","registry":"ARIN","report_date":"2018-05-01","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS21681","resource_type":"asn","resource":"AS21681","start":21681,"end":21681,"classification":"HOLD_RELEASED","classification_label":"Released from hold (ARIN lists it as 'available')","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:52:09+00:00","page":"https://rirtracker.com/asn/21681/#e-9cb14652e63300e9","report_page":"https://rirtracker.com/arin/reports/2018-05-01/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/21681.json","explanation":"ARIN's statistics show it reserved on 2018-04-30 and available on 2018-05-02. 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 2017-11-07, 175 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2018-05-02: Add AS21681), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-May/003429.html","retrieved_at":"2026-10-12T18:40:03+00:00","summary":"ARIN-Issued report for 2018-05-01: \"Remove AS21681\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180430.gz","retrieved_at":"2026-10-12T21:45:33+00:00","summary":"ARIN delegated statistics 2018-04-30 (produced 2018-04-30T05:11:53+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180502.gz","retrieved_at":"2026-10-12T21:45:37+00:00","summary":"ARIN delegated statistics 2018-05-02 (produced 2018-05-02T05:10:49+00:00), after the report: available"}]},{"event_id":"4bf69abd72eed441","registry":"ARIN","report_date":"2017-11-07","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS21681","start":21681,"end":21681,"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":"2026-10-14T00:03:36+00:00","page":"https://rirtracker.com/asn/21681/#e-4bf69abd72eed441","report_page":"https://rirtracker.com/arin/reports/2017-11-07/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/21681.json","observed":"AS21681 assigned on 2017-11-07, reserved on 2017-11-08","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":"2018-05-07","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 2001-06-07) on 2017-11-06 and reserved on 2017-11-08. 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 2018-05-07. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171108.gz","retrieved_at":"2026-10-12T21:36:59+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS21681 assigned on 2017-11-07, reserved on 2017-11-08"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171106.gz","retrieved_at":"2026-10-12T21:36:54+00:00","summary":"ARIN delegated statistics 2017-11-06 (produced 2017-11-06T06:10:37+00:00), before the report: assigned (dated 2001-06-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171108.gz","retrieved_at":"2026-10-12T21:36:59+00:00","summary":"ARIN delegated statistics 2017-11-08 (produced 2017-11-08T06:10:49+00:00), after the report: reserved"}]}],"classification_history":{"ebe1ca2b77cc82d2":[{"raw_change_id":154380,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:08+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-01 and assigned (dated 2018-05-02) on 2018-05-03. The tracker saw this range released from hold on 2018-05-01 (AS21681), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2018-05-01: Remove AS21681), so the before-and-after statistics may include it."},{"raw_change_id":154380,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:17+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-01 and assigned (dated 2018-05-02) on 2018-05-03. The tracker saw this range released from hold on 2018-05-01 (AS21681), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2018-05-01: Remove AS21681), so the before-and-after statistics may include it."},{"raw_change_id":154380,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:58+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-01 and assigned (dated 2018-05-02) on 2018-05-03. The tracker saw this range released from hold on 2018-05-01 (AS21681), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2018-05-01: Remove AS21681), so the before-and-after statistics may include it."},{"raw_change_id":154380,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:09+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-01 and assigned (dated 2018-05-02) on 2018-05-03. The tracker saw this range released from hold on 2018-05-01 (AS21681), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2018-05-01: Remove AS21681), so the before-and-after statistics may include it."}],"9cb14652e63300e9":[{"raw_change_id":154363,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:08+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-04-30 and available on 2018-05-02. 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 2017-11-07, 175 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2018-05-02: Add AS21681), so the before-and-after statistics may include it."},{"raw_change_id":154363,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:17+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-04-30 and available on 2018-05-02. 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 2017-11-07, 175 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2018-05-02: Add AS21681), so the before-and-after statistics may include it."},{"raw_change_id":154363,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:58+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-04-30 and available on 2018-05-02. 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 2017-11-07, 175 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2018-05-02: Add AS21681), so the before-and-after statistics may include it."},{"raw_change_id":154363,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:09+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2018-04-30 and available on 2018-05-02. 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 2017-11-07, 175 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2018-05-02: Add AS21681), so the before-and-after statistics may include it."}],"4bf69abd72eed441":[{"raw_change_id":343336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:16:22+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 2001-06-07) on 2017-11-06 and reserved on 2017-11-08. 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 2018-05-07. This does not confirm availability."},{"raw_change_id":343336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:52+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 2001-06-07) on 2017-11-06 and reserved on 2017-11-08. 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 2018-05-07. This does not confirm availability."},{"raw_change_id":343336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:25+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 2001-06-07) on 2017-11-06 and reserved on 2017-11-08. 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 2018-05-07. This does not confirm availability."},{"raw_change_id":343336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:36+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 2001-06-07) on 2017-11-06 and reserved on 2017-11-08. 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 2018-05-07. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2018-05-02)"}}