{"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":"199.30.136.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/199.30.136.0-199.30.143.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2017-04-14), allocated (dated 2017-04-18), allocated (dated 2017-04-21), allocated (dated 2017-05-11)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"3d8ebeaf399d9c24","registry":"ARIN","report_date":"2017-04-14","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 199.30.136.0-199.30.143.255","resource_type":"ipv4","resource":"199.30.136.0/21","start":"199.30.136.0","end":"199.30.143.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:46+00:00","page":"https://rirtracker.com/ip/199.30.136.0-199.30.143.255/#e-3d8ebeaf399d9c24","report_page":"https://rirtracker.com/arin/reports/2017-04-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.30.136.0-199.30.143.255.json","explanation":"ARIN's statistics show it reserved on 2017-04-13 and allocated (dated 2017-04-14), reserved on 2017-04-15. ARIN removed its own pool record for this range as part of issuing it: the same report adds 199.30.140.0-199.30.143.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2017-April/003046.html","retrieved_at":"2026-10-12T18:39:36+00:00","summary":"ARIN-Issued report for 2017-04-14: \"Remove 199.30.136.0-199.30.143.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170413.gz","retrieved_at":"2026-10-12T21:26:29+00:00","summary":"ARIN delegated statistics 2017-04-13 (produced 2017-04-13T05:10:15+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170415.gz","retrieved_at":"2026-10-12T21:26:42+00:00","summary":"ARIN delegated statistics 2017-04-15 (produced 2017-04-15T05:10:35+00:00), after the report: allocated (dated 2017-04-14), reserved"}]},{"event_id":"50ae1c45fe46898b","registry":"ARIN","report_date":"2015-02-10","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"199.30.136.0/21","start":"199.30.136.0","end":"199.30.143.255","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":"2026-10-14T00:00:36+00:00","page":"https://rirtracker.com/ip/199.30.136.0-199.30.143.255/#e-50ae1c45fe46898b","report_page":"https://rirtracker.com/arin/reports/2015-02-10/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.30.136.0-199.30.143.255.json","observed":"199.30.136.0/21 allocated on 2015-02-10, reserved on 2015-02-11","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2015-04-11","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 2010-09-07) on 2015-02-09 and reserved on 2015-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-04-11. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150211.gz","retrieved_at":"2026-10-12T20:48:06+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 199.30.136.0/21 allocated on 2015-02-10, reserved on 2015-02-11"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150209.gz","retrieved_at":"2026-10-12T20:48:01+00:00","summary":"ARIN delegated statistics 2015-02-09 (produced 2015-02-09T06:05:17+00:00), before the report: allocated (dated 2010-09-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150211.gz","retrieved_at":"2026-10-12T20:48:06+00:00","summary":"ARIN delegated statistics 2015-02-11 (produced 2015-02-11T06:05:57+00:00), after the report: reserved"}]},{"event_id":"30b51ff0e7257969","registry":"ARIN","report_date":"2014-02-18","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"199.30.136.0/21","start":"199.30.136.0","end":"199.30.143.255","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":"2026-10-13T23:58:56+00:00","page":"https://rirtracker.com/ip/199.30.136.0-199.30.143.255/#e-30b51ff0e7257969","report_page":"https://rirtracker.com/arin/reports/2014-02-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.30.136.0-199.30.143.255.json","observed":"199.30.136.0/21 allocated on 2014-02-18, reserved on 2014-02-19","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2014-04-19","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 2010-09-07) on 2014-02-17 and reserved on 2014-02-19. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2014-04-19. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140219.gz","retrieved_at":"2026-10-12T20:12:08+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 199.30.136.0/21 allocated on 2014-02-18, reserved on 2014-02-19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140217.gz","retrieved_at":"2026-10-12T20:12:03+00:00","summary":"ARIN delegated statistics 2014-02-17 (produced 2014-02-17T06:05:36+00:00), before the report: allocated (dated 2010-09-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140219.gz","retrieved_at":"2026-10-12T20:12:08+00:00","summary":"ARIN delegated statistics 2014-02-19 (produced 2014-02-19T06:06:06+00:00), after the report: reserved"}]},{"event_id":"baf1c94fd75da49a","registry":"ARIN","report_date":"2010-09-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 199.30.136.0-199.30.143.255","resource_type":"ipv4","resource":"199.30.136.0/21","start":"199.30.136.0","end":"199.30.143.255","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":"2026-10-13T23:50:49+00:00","page":"https://rirtracker.com/ip/199.30.136.0-199.30.143.255/#e-baf1c94fd75da49a","report_page":"https://rirtracker.com/arin/reports/2010-09-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.30.136.0-199.30.143.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-09-06 and allocated (dated 2010-09-07) on 2010-09-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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/2010-September/000631.html","retrieved_at":"2026-10-12T18:36:49+00:00","summary":"ARIN-Issued report for 2010-09-07: \"Add 199.30.136.0-199.30.143.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100906.gz","retrieved_at":"2026-10-12T19:09:57+00:00","summary":"ARIN delegated statistics 2010-09-06, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100908.gz","retrieved_at":"2026-10-12T19:10:01+00:00","summary":"ARIN delegated statistics 2010-09-08, after the report: allocated (dated 2010-09-07)"}]}],"classification_history":{"3d8ebeaf399d9c24":[{"raw_change_id":148807,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:37:52+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2017-04-13 and allocated (dated 2017-04-14), reserved on 2017-04-15. ARIN removed its own pool record for this range as part of issuing it: the same report adds 199.30.140.0-199.30.143.255. The issuance is explained on that line."},{"raw_change_id":148807,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:00+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2017-04-13 and allocated (dated 2017-04-14), reserved on 2017-04-15. ARIN removed its own pool record for this range as part of issuing it: the same report adds 199.30.140.0-199.30.143.255. The issuance is explained on that line."},{"raw_change_id":148807,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:39+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2017-04-13 and allocated (dated 2017-04-14), reserved on 2017-04-15. ARIN removed its own pool record for this range as part of issuing it: the same report adds 199.30.140.0-199.30.143.255. The issuance is explained on that line."},{"raw_change_id":148807,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:46+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2017-04-13 and allocated (dated 2017-04-14), reserved on 2017-04-15. ARIN removed its own pool record for this range as part of issuing it: the same report adds 199.30.140.0-199.30.143.255. The issuance is explained on that line."}],"50ae1c45fe46898b":[{"raw_change_id":296769,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:54:28+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 2010-09-07) on 2015-02-09 and reserved on 2015-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-04-11. This does not confirm availability."},{"raw_change_id":296769,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:13:19+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 2010-09-07) on 2015-02-09 and reserved on 2015-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-04-11. This does not confirm availability."},{"raw_change_id":296769,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:56:41+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 2010-09-07) on 2015-02-09 and reserved on 2015-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-04-11. This does not confirm availability."},{"raw_change_id":296769,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:00:36+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 allocated (dated 2010-09-07) on 2015-02-09 and reserved on 2015-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-04-11. This does not confirm availability."}],"30b51ff0e7257969":[{"raw_change_id":271205,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:41:31+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 2010-09-07) on 2014-02-17 and reserved on 2014-02-19. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2014-04-19. This does not confirm availability."},{"raw_change_id":271205,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:11:52+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 allocated (dated 2010-09-07) on 2014-02-17 and reserved on 2014-02-19. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2014-04-19. This does not confirm availability."},{"raw_change_id":271205,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:55:08+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 2010-09-07) on 2014-02-17 and reserved on 2014-02-19. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2014-04-19. This does not confirm availability."},{"raw_change_id":271205,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:58:56+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 2010-09-07) on 2014-02-17 and reserved on 2014-02-19. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2014-04-19. This does not confirm availability."}],"baf1c94fd75da49a":[{"raw_change_id":121761,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:12:33+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-09-06 and allocated (dated 2010-09-07) on 2010-09-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":121761,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:17+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-09-06 and allocated (dated 2010-09-07) on 2010-09-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":121761,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:50+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-09-06 and allocated (dated 2010-09-07) on 2010-09-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":121761,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:49+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-09-06 and allocated (dated 2010-09-07) on 2010-09-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2017-04-14), allocated (dated 2017-04-18), allocated (dated 2017-04-21), allocated (dated 2017-05-11)"}}