{"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":"104.153.168.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/104.153.168.0-104.153.171.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2014-08-11)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"4d795eb70f7b4952","registry":"ARIN","report_date":"2022-07-04","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"104.153.168.0/22","start":"104.153.168.0","end":"104.153.171.255","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":"2026-10-14T00:09:29+00:00","page":"https://rirtracker.com/ip/104.153.168.0-104.153.171.255/#e-4d795eb70f7b4952","report_page":"https://rirtracker.com/arin/reports/2022-07-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.153.168.0-104.153.171.255.json","observed":"104.153.168.0/22 allocated on 2022-07-04, reserved on 2022-07-05","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":"2022-09-02","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 2014-08-11) on 2022-07-03 and reserved on 2022-07-05. 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 2022-09-02. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220705.gz","retrieved_at":"2026-10-12T23:04:05+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 104.153.168.0/22 allocated on 2022-07-04, reserved on 2022-07-05"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220703.gz","retrieved_at":"2026-10-12T23:04:00+00:00","summary":"ARIN delegated statistics 2022-07-03 (produced 2022-07-03T13:00:09+00:00), before the report: allocated (dated 2014-08-11)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220705.gz","retrieved_at":"2026-10-12T23:04:05+00:00","summary":"ARIN delegated statistics 2022-07-05 (produced 2022-07-05T13:00:08+00:00), after the report: reserved"}]},{"event_id":"ea58362dfd08fcca","registry":"ARIN","report_date":"2014-08-11","source":"arin_issued","raw_action":"ADD","raw_line":"Add 104.153.168.0-104.153.171.255","resource_type":"ipv4","resource":"104.153.168.0/22","start":"104.153.168.0","end":"104.153.171.255","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":"2026-10-13T23:51:14+00:00","page":"https://rirtracker.com/ip/104.153.168.0-104.153.171.255/#e-ea58362dfd08fcca","report_page":"https://rirtracker.com/arin/reports/2014-08-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.153.168.0-104.153.171.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. 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/2014-August/002070.html","retrieved_at":"2026-10-12T18:38:28+00:00","summary":"ARIN-Issued report for 2014-08-11: \"Add 104.153.168.0-104.153.171.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140810.gz","retrieved_at":"2026-10-12T20:39:21+00:00","summary":"ARIN delegated statistics 2014-08-10 (produced 2014-08-10T05:04:42+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140812.gz","retrieved_at":"2026-10-12T20:39:26+00:00","summary":"ARIN delegated statistics 2014-08-12 (produced 2014-08-12T05:04:57+00:00), after the report: assigned (dated 2014-08-11)"}]},{"event_id":"0cc6d4747eb00f28","registry":"ARIN","report_date":"2014-08-11","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 104.153.168.0-104.153.171.255","resource_type":"ipv4","resource":"104.153.168.0/22","start":"104.153.168.0","end":"104.153.171.255","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":"2026-10-13T23:51:14+00:00","page":"https://rirtracker.com/ip/104.153.168.0-104.153.171.255/#e-0cc6d4747eb00f28","report_page":"https://rirtracker.com/arin/reports/2014-08-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.153.168.0-104.153.171.255.json","explanation":"ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.153.168.0-104.153.171.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-August/002070.html","retrieved_at":"2026-10-12T18:38:28+00:00","summary":"ARIN-Issued report for 2014-08-11: \"Remove 104.153.168.0-104.153.171.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140810.gz","retrieved_at":"2026-10-12T20:39:21+00:00","summary":"ARIN delegated statistics 2014-08-10 (produced 2014-08-10T05:04:42+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140812.gz","retrieved_at":"2026-10-12T20:39:26+00:00","summary":"ARIN delegated statistics 2014-08-12 (produced 2014-08-12T05:04:57+00:00), after the report: assigned (dated 2014-08-11)"}]}],"classification_history":{"4d795eb70f7b4952":[{"raw_change_id":430423,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:52:21+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 2014-08-11) on 2022-07-03 and reserved on 2022-07-05. 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 2022-09-02. This does not confirm availability."},{"raw_change_id":430423,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:20:44+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 2014-08-11) on 2022-07-03 and reserved on 2022-07-05. 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 2022-09-02. This does not confirm availability."},{"raw_change_id":430423,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:04:39+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 2014-08-11) on 2022-07-03 and reserved on 2022-07-05. 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 2022-09-02. This does not confirm availability."},{"raw_change_id":430423,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:09:29+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 2014-08-11) on 2022-07-03 and reserved on 2022-07-05. 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 2022-09-02. This does not confirm availability."}],"ea58362dfd08fcca":[{"raw_change_id":133405,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:26:06+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":133405,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:35+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":133405,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:11+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. 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":133405,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:14+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"0cc6d4747eb00f28":[{"raw_change_id":133384,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:26:04+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.153.168.0-104.153.171.255. The issuance is explained on that line."},{"raw_change_id":133384,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:35+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.153.168.0-104.153.171.255. The issuance is explained on that line."},{"raw_change_id":133384,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:11+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.153.168.0-104.153.171.255. The issuance is explained on that line."},{"raw_change_id":133384,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:14+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2014-08-10 and assigned (dated 2014-08-11) on 2014-08-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.153.168.0-104.153.171.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"allocated (dated 2014-08-11)"}}