{"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":"AS151663","resource_type":"asn","page":"https://rirtracker.com/asn/151663/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2024-08-15)"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"d35702afd1ae804a","registry":"APNIC","report_date":"2024-08-15","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"asn","resource":"AS151663","start":151663,"end":151663,"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 APNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:17:31+00:00","page":"https://rirtracker.com/asn/151663/#e-d35702afd1ae804a","report_page":"https://rirtracker.com/apnic/reports/2024-08-15/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/151663.json","observed":"AS151663 available on 2024-08-15, allocated on 2024-08-16","explanation":"No transfer record matches. APNIC's statistics show it available on 2024-08-15 and allocated (dated 2024-08-15) on 2024-08-16. The tracker saw this range removed from registration on 2023-08-14 (AS151663), so it appears to have been issued again from APNIC's pool.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20240816.gz","retrieved_at":"2026-10-13T01:16:00+00:00","summary":"Found by comparing APNIC's daily statistics: AS151663 available on 2024-08-15, allocated on 2024-08-16"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20240815.gz","retrieved_at":"2026-10-13T01:15:57+00:00","summary":"APNIC delegated statistics 2024-08-15, before the change: available"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20240816.gz","retrieved_at":"2026-10-13T01:16:00+00:00","summary":"APNIC delegated statistics 2024-08-16, after the change: allocated (dated 2024-08-15)"}]},{"event_id":"14a7c8a1160332d0","registry":"APNIC","report_date":"2023-08-14","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"asn","resource":"AS151663","start":151663,"end":151663,"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":"2026-10-14T00:15:39+00:00","page":"https://rirtracker.com/asn/151663/#e-14a7c8a1160332d0","report_page":"https://rirtracker.com/apnic/reports/2023-08-14/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/151663.json","observed":"AS151663 allocated on 2023-08-14, available on 2023-08-15","hold":{"hold_rule_source_url":"https://www.apnic.net/manage-ip/manage-resources/address-status","hold_rule_months":12,"estimated_hold_end":"2024-08-14","availability_statement":"Possible reissue candidate after this date; not confirmed available","hold_rule_observed":true},"explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2023-08-11) on 2023-08-14 and available on 2023-08-15. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned ASNs a year after the removal or later since 2014, so the tracker estimates the hold ends on 2024-08-14. That is what APNIC has done, not a rule it states. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230815.gz","retrieved_at":"2026-10-13T00:46:46+00:00","summary":"Found by comparing APNIC's daily statistics: AS151663 allocated on 2023-08-14, available on 2023-08-15"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230814.gz","retrieved_at":"2026-10-13T00:46:42+00:00","summary":"APNIC delegated statistics 2023-08-14, before the change: allocated (dated 2023-08-11)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230815.gz","retrieved_at":"2026-10-13T00:46:46+00:00","summary":"APNIC delegated statistics 2023-08-15, after the change: available"}]},{"event_id":"5851b5673021110a","registry":"APNIC","report_date":"2023-08-11","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"asn","resource":"AS151663","start":151663,"end":151663,"classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from APNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:15:37+00:00","page":"https://rirtracker.com/asn/151663/#e-5851b5673021110a","report_page":"https://rirtracker.com/apnic/reports/2023-08-11/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/151663.json","observed":"AS151663 available on 2023-08-11, allocated on 2023-08-12","explanation":"No transfer record matches. APNIC's statistics show it available on 2023-08-11 and allocated (dated 2023-08-11) on 2023-08-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230812.gz","retrieved_at":"2026-10-13T00:46:35+00:00","summary":"Found by comparing APNIC's daily statistics: AS151663 available on 2023-08-11, allocated on 2023-08-12"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230811.gz","retrieved_at":"2026-10-13T00:46:32+00:00","summary":"APNIC delegated statistics 2023-08-11, before the change: available"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230812.gz","retrieved_at":"2026-10-13T00:46:35+00:00","summary":"APNIC delegated statistics 2023-08-12, after the change: allocated (dated 2023-08-11)"}]}],"classification_history":{"d35702afd1ae804a":[{"raw_change_id":533525,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:40:51+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2024-08-15 and allocated (dated 2024-08-15) on 2024-08-16. The tracker saw this range removed from registration on 2023-08-14 (AS151663), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":533525,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:27:09+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2024-08-15 and allocated (dated 2024-08-15) on 2024-08-16. The tracker saw this range removed from registration on 2023-08-14 (AS151663), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":533525,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:11:32+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2024-08-15 and allocated (dated 2024-08-15) on 2024-08-16. The tracker saw this range removed from registration on 2023-08-14 (AS151663), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":533525,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:17:31+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2024-08-15 and allocated (dated 2024-08-15) on 2024-08-16. The tracker saw this range removed from registration on 2023-08-14 (AS151663), so it appears to have been issued again from APNIC's pool."}],"14a7c8a1160332d0":[{"raw_change_id":512317,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:30:02+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2023-08-11) on 2023-08-14 and available on 2023-08-15. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned ASNs before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":512317,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:25:42+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2023-08-11) on 2023-08-14 and available on 2023-08-15. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned ASNs before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":512317,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:09:59+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2023-08-11) on 2023-08-14 and available on 2023-08-15. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned ASNs before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":512317,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:15:39+00:00","current":1,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2023-08-11) on 2023-08-14 and available on 2023-08-15. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned ASNs a year after the removal or later since 2014, so the tracker estimates the hold ends on 2024-08-14. That is what APNIC has done, not a rule it states. This does not confirm availability."}],"5851b5673021110a":[{"raw_change_id":511953,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:29:53+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2023-08-11 and allocated (dated 2023-08-11) on 2023-08-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":511953,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:25:40+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2023-08-11 and allocated (dated 2023-08-11) on 2023-08-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":511953,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:09:57+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2023-08-11 and allocated (dated 2023-08-11) on 2023-08-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":511953,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:15:37+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2023-08-11 and allocated (dated 2023-08-11) on 2023-08-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."}]},"arin_statistics_now":{"status":"not listed"}}