{"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":"172.111.20.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/172.111.20.0-172.111.23.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2021-07-09)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[{"id":12018,"date":"2018-02-05T15:37:57Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Virtuzo","recipient_org":"OppoBox LLC","range":"172.111.0.0/18","log":"ARIN"}],"events":[{"event_id":"92aba89e680ae6b7","registry":"ARIN","report_date":"2021-07-09","source":"arin_issued","raw_action":"ADD","raw_line":"Add 172.111.20.0-172.111.23.255","resource_type":"ipv4","resource":"172.111.20.0/22","start":"172.111.20.0","end":"172.111.23.255","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":"2026-10-13T23:53:11+00:00","page":"https://rirtracker.com/ip/172.111.20.0-172.111.23.255/#e-92aba89e680ae6b7","report_page":"https://rirtracker.com/arin/reports/2021-07-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.111.20.0-172.111.23.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. The tracker saw this range released from hold on 2021-07-07 (172.111.0.0-172.111.63.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2021-July/004592.html","retrieved_at":"2026-10-12T18:41:23+00:00","summary":"ARIN-Issued report for 2021-07-09: \"Add 172.111.20.0-172.111.23.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210708.gz","retrieved_at":"2026-10-12T22:45:28+00:00","summary":"ARIN delegated statistics 2021-07-08 (produced 2021-07-08T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210710.gz","retrieved_at":"2026-10-12T22:45:32+00:00","summary":"ARIN delegated statistics 2021-07-10 (produced 2021-07-10T14:00:13+00:00), after the report: allocated (dated 2021-07-09)"}]},{"event_id":"0d79076f6f7044bd","registry":"ARIN","report_date":"2021-07-09","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 172.111.20.0-172.111.23.255","resource_type":"ipv4","resource":"172.111.20.0/22","start":"172.111.20.0","end":"172.111.23.255","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":"2026-10-13T23:53:11+00:00","page":"https://rirtracker.com/ip/172.111.20.0-172.111.23.255/#e-0d79076f6f7044bd","report_page":"https://rirtracker.com/arin/reports/2021-07-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.111.20.0-172.111.23.255.json","explanation":"ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.111.20.0-172.111.23.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2021-July/004592.html","retrieved_at":"2026-10-12T18:41:23+00:00","summary":"ARIN-Issued report for 2021-07-09: \"Remove 172.111.20.0-172.111.23.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210708.gz","retrieved_at":"2026-10-12T22:45:28+00:00","summary":"ARIN delegated statistics 2021-07-08 (produced 2021-07-08T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210710.gz","retrieved_at":"2026-10-12T22:45:32+00:00","summary":"ARIN delegated statistics 2021-07-10 (produced 2021-07-10T14:00:13+00:00), after the report: allocated (dated 2021-07-09)"}]}],"classification_history":{"92aba89e680ae6b7":[{"raw_change_id":172204,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:52:59+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. The tracker saw this range released from hold on 2021-07-07 (172.111.0.0-172.111.63.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":172204,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:04+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. The tracker saw this range released from hold on 2021-07-07 (172.111.0.0-172.111.63.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":172204,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:51+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. The tracker saw this range released from hold on 2021-07-07 (172.111.0.0-172.111.63.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":172204,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:11+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. The tracker saw this range released from hold on 2021-07-07 (172.111.0.0-172.111.63.255), so it appears to have been issued again from ARIN's pool."}],"0d79076f6f7044bd":[{"raw_change_id":172179,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:52:59+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.111.20.0-172.111.23.255. The issuance is explained on that line."},{"raw_change_id":172179,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:04+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.111.20.0-172.111.23.255. The issuance is explained on that line."},{"raw_change_id":172179,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:51+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.111.20.0-172.111.23.255. The issuance is explained on that line."},{"raw_change_id":172179,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:11+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2021-07-08 and allocated (dated 2021-07-09) on 2021-07-10. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.111.20.0-172.111.23.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"allocated (dated 2021-07-09)"}}