{"classifier_version":"1.0.0","generated":"2026-10-09T21:19:22+00:00","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by the American Registry for Internet Numbers (ARIN), the Number Resource Organization (NRO), or any 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":"66.51.80.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/66.51.80.0-66.51.95.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"allocated (dated 2026-02-13)"},"current_holder":{"rir":"ARIN","org":"Freestone Grove Partners","how":"ARIN's statistics for 2026-10-09 and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":42833,"date":"2026-02-13T14:49:22Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Windstream Communications LLC","recipient_org":"Freestone Grove Partners","range":"66.51.80.0/20"},{"id":14820,"date":"2018-09-18T17:08:49Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Earthlink, Inc.","recipient_org":"Windstream Communications LLC","range":"66.51.64.0/19"}],"events":[{"event_id":"163f3ef5d81a43d4","report_date":"2026-02-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 66.51.80.0-66.51.95.255","resource_type":"ipv4","resource":"66.51.80.0/20","start":"66.51.80.0","end":"66.51.95.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Windstream Communications LLC","recipient_organization":"Freestone Grove Partners","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:18+00:00","page":"https://rirtracker.com/ip/66.51.80.0-66.51.95.255/#e-163f3ef5d81a43d4","evidence_url":"https://rirtracker.com/api/v1/events/163f3ef5d81a43d4.json","piece_of":{"resource":"66.51.64.0/19","page":"https://rirtracker.com/ip/66.51.64.0-66.51.95.255/"},"explanation":"ARIN's transfer log records a transfer from Windstream Communications LLC (ARIN) to Freestone Grove Partners (ARIN) on 2026-02-13 14:49 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2026-February/006271.html","retrieved_at":"2026-10-09T18:53:54+00:00","summary":"ARIN-Issued report for 2026-02-13: \"Add 66.51.80.0-66.51.95.255\""},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-09T18:54:15+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2026-02-13 14:49 UTC, Windstream Communications LLC (ARIN) to Freestone Grove Partners (ARIN); resources moved: 66.51.80.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260212","retrieved_at":"2026-10-09T18:56:31+00:00","summary":"ARIN delegated statistics 2026-02-12 (produced 2026-02-12T14:00:51+00:00), before the report: allocated (dated 2000-12-22)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260214","retrieved_at":"2026-10-09T18:56:38+00:00","summary":"ARIN delegated statistics 2026-02-14 (produced 2026-02-14T14:00:49+00:00), after the report: allocated (dated 2026-02-13)"}]}],"classification_history":{"163f3ef5d81a43d4":[{"raw_change_id":762,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:18+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Windstream Communications LLC (ARIN) to Freestone Grove Partners (ARIN) on 2026-02-13 14:49 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]}}