{"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":"2600:2f00::/28","resource_type":"ipv6","page":"https://rirtracker.com/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2026-11-02)"},"current_holder":{"rir":"ARIN","org":"Manufacturers and Traders Trust Company","handle":"MTT-5","how":"RDAP, looked up 2026-11-11 18:18 UTC"},"rdap_snapshots":[{"resource_type":"ipv6","start_key":"26002f00000000000000000000000000","end_key":"26002f0fffffffffffffffffffffffff","captured_at":"2026-11-11T18:18:00+00:00","reason":"7d","authoritative_rir":"ARIN","handle":"NET6-2600-2F00-1","name":"MTT-IPV6-1","status":"active","org_handle":"MTT-5","org_name":"Manufacturers and Traders Trust Company","registration_date":"2026-11-02T10:14:51-05:00","last_changed_date":"2026-11-02T10:14:51-05:00","rdap_url":"https://rdap.arin.net/registry/ip/2600:2f00::"},{"resource_type":"ipv6","start_key":"26002f00000000000000000000000000","end_key":"26002f0fffffffffffffffffffffffff","captured_at":"2026-11-05T18:19:22+00:00","reason":"24h","authoritative_rir":"ARIN","handle":"NET6-2600-2F00-1","name":"MTT-IPV6-1","status":"active","org_handle":"MTT-5","org_name":"Manufacturers and Traders Trust Company","registration_date":"2026-11-02T10:14:51-05:00","last_changed_date":"2026-11-02T10:14:51-05:00","rdap_url":"https://rdap.arin.net/registry/ip/2600:2f00::"},{"resource_type":"ipv6","start_key":"26002f00000000000000000000000000","end_key":"26002f0fffffffffffffffffffffffff","captured_at":"2026-11-03T18:21:41+00:00","reason":"first","authoritative_rir":"ARIN","handle":"NET6-2600-2F00-1","name":"MTT-IPV6-1","status":"active","org_handle":"MTT-5","org_name":"Manufacturers and Traders Trust Company","registration_date":"2026-11-02T10:14:51-05:00","last_changed_date":"2026-11-02T10:14:51-05:00","rdap_url":"https://rdap.arin.net/registry/ip/2600:2f00::"}],"transfers":[],"events":[{"event_id":"1e0a463c678cb0ce","registry":"ARIN","report_date":"2026-11-02","source":"arin_issued","raw_action":"ADD","raw_line":"Add 2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF","resource_type":"ipv6","resource":"2600:2f00::/28","start":"2600:2f00::","end":"2600:2f0f:ffff:ffff:ffff:ffff:ffff:ffff","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":"2026-11-03T18:26:19+00:00","page":"https://rirtracker.com/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff/#e-1e0a463c678cb0ce","report_page":"https://rirtracker.com/arin/reports/2026-11-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2026-11-01 and allocated (dated 2026-11-02) on 2026-11-03. The tracker saw this range released from hold on 2025-12-30 (2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2026-November/006537.html","retrieved_at":"2026-11-03T18:17:04+00:00","summary":"ARIN-Issued report for 2026-11-02: \"Add 2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261101","retrieved_at":"2026-11-01T18:17:16+00:00","summary":"ARIN delegated statistics 2026-11-01 (produced 2026-11-01T14:00:22+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261103","retrieved_at":"2026-11-03T18:17:12+00:00","summary":"ARIN delegated statistics 2026-11-03 (produced 2026-11-03T14:00:21+00:00), after the report: allocated (dated 2026-11-02)"}]},{"event_id":"7581a367acec2c23","registry":"ARIN","report_date":"2025-12-30","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF","resource_type":"ipv6","resource":"2600:2f00::/28","start":"2600:2f00::","end":"2600:2f0f:ffff:ffff:ffff:ffff:ffff:ffff","classification":"HOLD_RELEASED","classification_label":"Released from hold (ARIN lists it as 'available')","confidence":"STRONG_INFERENCE","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":"2026-10-13T23:54:43+00:00","page":"https://rirtracker.com/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff/#e-7581a367acec2c23","report_page":"https://rirtracker.com/arin/reports/2025-12-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff.json","explanation":"ARIN's statistics show it reserved on 2025-12-29 and available on 2025-12-31. 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 2024-02-27, 672 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2025-December/006226.html","retrieved_at":"2026-10-12T18:43:16+00:00","summary":"ARIN-Issued report for 2025-12-30: \"Remove 2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251229.gz","retrieved_at":"2026-10-13T00:12:41+00:00","summary":"ARIN delegated statistics 2025-12-29 (produced 2025-12-29T14:00:47+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251231.gz","retrieved_at":"2026-10-09T19:28:59+00:00","summary":"ARIN delegated statistics 2025-12-31 (produced 2025-12-31T14:00:48+00:00), after the report: available"}]},{"event_id":"591072359a473cb1","registry":"ARIN","report_date":"2024-02-27","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv6","resource":"2600:2f00::/28","start":"2600:2f00::","end":"2600:2f0f:ffff:ffff:ffff:ffff:ffff:ffff","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":"2026-10-14T00:11:41+00:00","page":"https://rirtracker.com/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff/#e-591072359a473cb1","report_page":"https://rirtracker.com/arin/reports/2024-02-27/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff.json","observed":"2600:2f00::/28 allocated on 2024-02-27, reserved on 2024-02-28","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":"2024-08-27","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 allocated (dated 2018-05-18) on 2024-02-26 and reserved on 2024-02-28. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 space for 6 calendar months before reissuing it, so the estimated hold end is 2024-08-27. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240228.gz","retrieved_at":"2026-10-12T23:35:58+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 2600:2f00::/28 allocated on 2024-02-27, reserved on 2024-02-28"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240226.gz","retrieved_at":"2026-10-12T23:35:53+00:00","summary":"ARIN delegated statistics 2024-02-26 (produced 2024-02-26T14:00:45+00:00), before the report: allocated (dated 2018-05-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240228.gz","retrieved_at":"2026-10-12T23:35:58+00:00","summary":"ARIN delegated statistics 2024-02-28 (produced 2024-02-28T14:00:43+00:00), after the report: reserved"}]},{"event_id":"06660917134e1383","registry":"ARIN","report_date":"2018-05-18","source":"arin_issued","raw_action":"ADD","raw_line":"Add 2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF","resource_type":"ipv6","resource":"2600:2f00::/28","start":"2600:2f00::","end":"2600:2f0f:ffff:ffff:ffff:ffff:ffff:ffff","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 ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:10+00:00","page":"https://rirtracker.com/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff/#e-06660917134e1383","report_page":"https://rirtracker.com/arin/reports/2018-05-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/2600.2f00..-2600.2f0f.ffff.ffff.ffff.ffff.ffff.ffff.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2018-05-17 and allocated (dated 2018-05-18) on 2018-05-19. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-May/003446.html","retrieved_at":"2026-10-12T18:40:03+00:00","summary":"ARIN-Issued report for 2018-05-18: \"Add 2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180517.gz","retrieved_at":"2026-10-12T21:46:23+00:00","summary":"ARIN delegated statistics 2018-05-17 (produced 2018-05-17T05:00:22+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180519.gz","retrieved_at":"2026-10-12T21:46:28+00:00","summary":"ARIN delegated statistics 2018-05-19 (produced 2018-05-19T05:00:24+00:00), after the report: allocated (dated 2018-05-18)"}]}],"classification_history":{"1e0a463c678cb0ce":[{"raw_change_id":579375,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-11-03T18:26:19+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2026-11-01 and allocated (dated 2026-11-02) on 2026-11-03. The tracker saw this range released from hold on 2025-12-30 (2600:2F00::-2600:2F0F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF), so it appears to have been issued again from ARIN's pool."}],"7581a367acec2c23":[{"raw_change_id":198574,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:09:00+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2025-12-29 and available on 2025-12-31. 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 2024-02-27, 672 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":198574,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:12+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2025-12-29 and available on 2025-12-31. 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 2024-02-27, 672 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":198574,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:07+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2025-12-29 and available on 2025-12-31. 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 2024-02-27, 672 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":198574,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:43+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2025-12-29 and available on 2025-12-31. 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 2024-02-27, 672 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed."}],"591072359a473cb1":[{"raw_change_id":462012,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:06:33+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 allocated (dated 2018-05-18) on 2024-02-26 and reserved on 2024-02-28. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 space for 6 calendar months before reissuing it, so the earliest estimated hold expiration is 2024-08-27. This does not confirm availability."},{"raw_change_id":462012,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:22:31+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 allocated (dated 2018-05-18) on 2024-02-26 and reserved on 2024-02-28. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 space for 6 calendar months before reissuing it, so the earliest estimated hold expiration is 2024-08-27. This does not confirm availability."},{"raw_change_id":462012,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:06:35+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 allocated (dated 2018-05-18) on 2024-02-26 and reserved on 2024-02-28. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 space for 6 calendar months before reissuing it, so the earliest estimated hold expiration is 2024-08-27. This does not confirm availability."},{"raw_change_id":462012,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:11:41+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 allocated (dated 2018-05-18) on 2024-02-26 and reserved on 2024-02-28. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv6 space for 6 calendar months before reissuing it, so the estimated hold end is 2024-08-27. This does not confirm availability."}],"06660917134e1383":[{"raw_change_id":154610,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:15+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2018-05-17 and allocated (dated 2018-05-18) on 2018-05-19. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":154610,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","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 available on 2018-05-17 and allocated (dated 2018-05-18) on 2018-05-19. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":154610,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","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 available on 2018-05-17 and allocated (dated 2018-05-18) on 2018-05-19. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":154610,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:10+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2018-05-17 and allocated (dated 2018-05-18) on 2018-05-19. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2026-11-02)"}}