{"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":"2001:df0:72::/48","resource_type":"ipv6","page":"https://rirtracker.com/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff/","statistics_now":{"registry":"APNIC","status":"available"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"e68493f04551c9a1","registry":"APNIC","report_date":"2020-08-11","source":"statistics","raw_action":"RELEASED","raw_line":null,"resource_type":"ipv6","resource":"2001:df0:72::/48","start":"2001:df0:72::","end":"2001:df0:72:ffff:ffff:ffff:ffff:ffff","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":"2026-10-14T00:10:57+00:00","page":"https://rirtracker.com/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff/#e-e68493f04551c9a1","report_page":"https://rirtracker.com/apnic/reports/2020-08-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff.json","observed":"2001:df0:72::/48 reserved on 2020-08-11, available on 2020-08-12","explanation":"APNIC's statistics show it reserved on 2020-08-11 and available on 2020-08-12. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-03-22, 3795 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/2020/delegated-apnic-extended-20200812.gz","retrieved_at":"2026-10-12T23:25:20+00:00","summary":"Found by comparing APNIC's daily statistics: 2001:df0:72::/48 reserved on 2020-08-11, available on 2020-08-12"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20200811.gz","retrieved_at":"2026-10-12T23:25:16+00:00","summary":"APNIC delegated statistics 2020-08-11, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20200812.gz","retrieved_at":"2026-10-12T23:25:20+00:00","summary":"APNIC delegated statistics 2020-08-12, after the change: available"}]},{"event_id":"bbef925619605dd6","registry":"APNIC","report_date":"2010-03-22","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"ipv6","resource":"2001:df0:72::/48","start":"2001:df0:72::","end":"2001:df0:72:ffff:ffff:ffff:ffff:ffff","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:56:17+00:00","page":"https://rirtracker.com/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff/#e-bbef925619605dd6","report_page":"https://rirtracker.com/apnic/reports/2010-03-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff.json","observed":"2001:df0:72::/48 assigned on 2010-03-22, not listed on 2010-03-23","explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2010-02-12) on 2010-03-22 and not listed on 2010-03-23. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, and its statistics show a steady one (a year) only for removals from 2014-07-01 on; this one came earlier, so the tracker gives no estimate. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100323.gz","retrieved_at":"2026-10-12T19:15:49+00:00","summary":"Found by comparing APNIC's daily statistics: 2001:df0:72::/48 assigned on 2010-03-22, not listed on 2010-03-23"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100322.gz","retrieved_at":"2026-10-12T19:15:46+00:00","summary":"APNIC delegated statistics 2010-03-22, before the change: assigned (dated 2010-02-12)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100323.gz","retrieved_at":"2026-10-12T19:15:49+00:00","summary":"APNIC delegated statistics 2010-03-23, after the change: not listed"}]},{"event_id":"adf70c5aad90cecd","registry":"APNIC","report_date":"2010-02-12","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv6","resource":"2001:df0:72::/48","start":"2001:df0:72::","end":"2001:df0:72:ffff:ffff:ffff:ffff:ffff","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":"2026-10-13T23:56:10+00:00","page":"https://rirtracker.com/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff/#e-adf70c5aad90cecd","report_page":"https://rirtracker.com/apnic/reports/2010-02-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2001.df0.72..-2001.df0.72.ffff.ffff.ffff.ffff.ffff.json","observed":"2001:df0:72::/48 not listed on 2010-02-12, assigned on 2010-02-13","explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-02-12 and assigned (dated 2010-02-12) on 2010-02-13. 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/2010/delegated-apnic-extended-20100213.gz","retrieved_at":"2026-10-12T19:13:52+00:00","summary":"Found by comparing APNIC's daily statistics: 2001:df0:72::/48 not listed on 2010-02-12, assigned on 2010-02-13"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100212.gz","retrieved_at":"2026-10-12T19:13:49+00:00","summary":"APNIC delegated statistics 2010-02-12, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100213.gz","retrieved_at":"2026-10-12T19:13:52+00:00","summary":"APNIC delegated statistics 2010-02-13, after the change: assigned (dated 2010-02-12)"}]}],"classification_history":{"e68493f04551c9a1":[{"raw_change_id":452341,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:02:17+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2020-08-11 and available on 2020-08-12. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-03-22, 3795 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":452341,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:57+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2020-08-11 and available on 2020-08-12. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-03-22, 3795 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":452341,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:05:58+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2020-08-11 and available on 2020-08-12. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-03-22, 3795 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":452341,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:57+00:00","current":1,"public_explanation":"APNIC's statistics show it reserved on 2020-08-11 and available on 2020-08-12. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-03-22, 3795 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."}],"bbef925619605dd6":[{"raw_change_id":225885,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:18:48+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 assigned (dated 2010-02-12) on 2010-03-22 and not listed on 2010-03-23. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv6 space before reissuing it, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":225885,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:33+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 assigned (dated 2010-02-12) on 2010-03-22 and not listed on 2010-03-23. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv6 space before reissuing it, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":225885,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:36+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 assigned (dated 2010-02-12) on 2010-03-22 and not listed on 2010-03-23. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv6 space before reissuing it, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":225885,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:17+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 assigned (dated 2010-02-12) on 2010-03-22 and not listed on 2010-03-23. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, and its statistics show a steady one (a year) only for removals from 2014-07-01 on; this one came earlier, so the tracker gives no estimate. This does not confirm availability."}],"adf70c5aad90cecd":[{"raw_change_id":224040,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:18:10+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-02-12 and assigned (dated 2010-02-12) on 2010-02-13. 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":224040,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:28+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-02-12 and assigned (dated 2010-02-12) on 2010-02-13. 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":224040,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:30+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-02-12 and assigned (dated 2010-02-12) on 2010-02-13. 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":224040,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:10+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-02-12 and assigned (dated 2010-02-12) on 2010-02-13. 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"}}