{"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":"115.31.64.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/115.31.64.0-115.31.79.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2015-11-30)"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[{"id":124868,"date":"2016-11-29T01:50:59Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"APNIC","source_org":"China Internet Network Information Center/GDYS","recipient_org":"China Internet Network Information Center/WSUNET","range":"115.31.68.0/22","log":"APNIC"},{"id":124807,"date":"2016-10-14T00:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"APNIC","source_org":"China Internet Network Information Center/GWBN-WEINAN","recipient_org":"China Internet Network Information Center/DXTNET","range":"115.31.72.0/22","log":"APNIC"},{"id":124767,"date":"2016-10-14T00:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"APNIC","source_org":"China Internet Network Information Center/GWBN-XIAOGAN","recipient_org":"China Internet Network Information Center/DXTNET","range":"115.31.76.0/22","log":"APNIC"}],"events":[{"event_id":"e767da57a083118e","registry":"APNIC","report_date":"2015-10-28","source":"statistics","raw_action":"RELEASED","raw_line":null,"resource_type":"ipv4","resource":"115.31.64.0/20","start":"115.31.64.0","end":"115.31.79.255","classification":"HOLD_RELEASED","classification_label":"Released from hold (APNIC lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"APNIC's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:57+00:00","page":"https://rirtracker.com/ip/115.31.64.0-115.31.79.255/#e-e767da57a083118e","report_page":"https://rirtracker.com/apnic/reports/2015-10-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/115.31.64.0-115.31.79.255.json","observed":"115.31.64.0/20 reserved on 2015-10-28, available on 2015-10-29","explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2014-06-24, 491 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151029.gz","retrieved_at":"2026-10-12T21:26:44+00:00","summary":"Found by comparing APNIC's daily statistics: 115.31.64.0/20 reserved on 2015-10-28, available on 2015-10-29"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151028.gz","retrieved_at":"2026-10-12T21:26:41+00:00","summary":"APNIC delegated statistics 2015-10-28, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151029.gz","retrieved_at":"2026-10-12T21:26:44+00:00","summary":"APNIC delegated statistics 2015-10-29, after the change: available"}]},{"event_id":"bd4443f250f74415","registry":"APNIC","report_date":"2008-07-08","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"115.31.64.0/20","start":"115.31.64.0","end":"115.31.79.255","classification":"UNRESOLVED","classification_label":"Unresolved change","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Inventory effect unknown","inventory_effect_code":"UNKNOWN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:46+00:00","page":"https://rirtracker.com/ip/115.31.64.0-115.31.79.255/#e-bd4443f250f74415","report_page":"https://rirtracker.com/apnic/reports/2008-07-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/115.31.64.0-115.31.79.255.json","observed":"115.31.64.0/20 not listed on 2008-07-08, allocated on 2008-07-09","explanation":"No transfer record matches. APNIC's statistics show it not listed on 2008-07-08 and allocated (dated 2008-07-08) on 2008-07-09. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2008/delegated-apnic-extended-20080709.gz","retrieved_at":"2026-10-12T18:43:48+00:00","summary":"Found by comparing APNIC's daily statistics: 115.31.64.0/20 not listed on 2008-07-08, allocated on 2008-07-09"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2008/delegated-apnic-extended-20080708.gz","retrieved_at":"2026-10-12T18:43:44+00:00","summary":"APNIC delegated statistics 2008-07-08, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2008/delegated-apnic-extended-20080709.gz","retrieved_at":"2026-10-12T18:43:48+00:00","summary":"APNIC delegated statistics 2008-07-09, after the change: allocated (dated 2008-07-08)"}]}],"classification_history":{"e767da57a083118e":[{"raw_change_id":333092,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:11:00+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2014-06-24, 491 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":333092,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:20+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2014-06-24, 491 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":333092,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:50+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2014-06-24, 491 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":333092,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:57+00:00","current":1,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2014-06-24, 491 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."}],"bd4443f250f74415":[{"raw_change_id":199418,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:09:18+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2008-07-08 and allocated (dated 2008-07-08) on 2008-07-09. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":199418,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:14+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2008-07-08 and allocated (dated 2008-07-08) on 2008-07-09. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":199418,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:10+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2008-07-08 and allocated (dated 2008-07-08) on 2008-07-09. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":199418,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:46+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2008-07-08 and allocated (dated 2008-07-08) on 2008-07-09. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."}]},"arin_statistics_now":{"status":"not listed"}}