{"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":"66.205.243.0 - 66.205.255.255","resource_type":"ipv4","page":"https://rirtracker.com/ip/66.205.243.0-66.205.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2019-08-30), allocated (dated 2019-09-04), allocated (dated 2019-10-04)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[{"id":45594,"date":"2026-09-15T20:46:14Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Netspectrum Wireless Internet Solutions","recipient_org":"Vianet Inc.","range":"66.205.252.0/22","log":"ARIN"},{"id":26493,"date":"2021-12-22T22:31:07Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"PCM Industries","recipient_org":"HICOUNTRYNET, LLC","range":"66.205.243.0/24","log":"ARIN"}],"events":[{"event_id":"31ea9071c681acbb","registry":"ARIN","report_date":"2019-08-30","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 66.205.243.0-66.205.255.255","resource_type":"ipv4","resource":"66.205.243.0 - 66.205.255.255","start":"66.205.243.0","end":"66.205.255.255","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":"2026-10-13T23:52:35+00:00","page":"https://rirtracker.com/ip/66.205.243.0-66.205.255.255/#e-31ea9071c681acbb","report_page":"https://rirtracker.com/arin/reports/2019-08-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.205.243.0-66.205.255.255.json","explanation":"ARIN's statistics show it reserved on 2019-08-29 and allocated (dated 2019-08-30), reserved on 2019-08-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.205.243.0-66.205.243.255, 66.205.250.0-66.205.251.255, 66.205.252.0-66.205.255.255. The issuance is explained on those lines.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-August/003914.html","retrieved_at":"2026-10-12T18:40:35+00:00","summary":"ARIN-Issued report for 2019-08-30: \"Remove 66.205.243.0-66.205.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190829.gz","retrieved_at":"2026-10-12T22:10:17+00:00","summary":"ARIN delegated statistics 2019-08-29 (produced 2019-08-29T14:00:16+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190831.gz","retrieved_at":"2026-10-12T22:10:30+00:00","summary":"ARIN delegated statistics 2019-08-31 (produced 2019-08-31T14:00:17+00:00), after the report: allocated (dated 2019-08-30), reserved"}]}],"classification_history":{"31ea9071c681acbb":[{"raw_change_id":161263,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:45:29+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-08-29 and allocated (dated 2019-08-30), reserved on 2019-08-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.205.243.0-66.205.243.255, 66.205.250.0-66.205.251.255, 66.205.252.0-66.205.255.255. The issuance is explained on those lines."},{"raw_change_id":161263,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:37+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-08-29 and allocated (dated 2019-08-30), reserved on 2019-08-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.205.243.0-66.205.243.255, 66.205.250.0-66.205.251.255, 66.205.252.0-66.205.255.255. The issuance is explained on those lines."},{"raw_change_id":161263,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:20+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-08-29 and allocated (dated 2019-08-30), reserved on 2019-08-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.205.243.0-66.205.243.255, 66.205.250.0-66.205.251.255, 66.205.252.0-66.205.255.255. The issuance is explained on those lines."},{"raw_change_id":161263,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:35+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2019-08-29 and allocated (dated 2019-08-30), reserved on 2019-08-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.205.243.0-66.205.243.255, 66.205.250.0-66.205.251.255, 66.205.252.0-66.205.255.255. The issuance is explained on those lines."}]},"arin_statistics_now":{"status":"allocated (dated 2019-08-30), allocated (dated 2019-09-04), allocated (dated 2019-10-04)"}}