{"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":"66.111.16.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/66.111.16.0-66.111.31.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2002-10-28)"},"current_holder":{"rir":"ARIN","org":"Medical Mutual","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":34424,"date":"2024-02-08T19:43:53Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Medical Mutual Services","recipient_org":"Medical Mutual","range":"66.111.16.0/20","log":"ARIN"}],"events":[{"event_id":"e77c6b60510ad9bf","registry":"ARIN","report_date":"2024-02-08","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"66.111.16.0/20","start":"66.111.16.0","end":"66.111.31.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Medical Mutual Services","recipient_organization":"Medical Mutual","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:13+00:00","page":"https://rirtracker.com/ip/66.111.16.0-66.111.31.255/#e-e77c6b60510ad9bf","report_page":"https://rirtracker.com/arin/reports/2024-02-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.111.16.0-66.111.31.255.json","observed":"Merger/acquisition: Medical Mutual Services (ARIN) to Medical Mutual (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Medical Mutual Services (ARIN) to Medical Mutual (ARIN) on 2024-02-08 19:43 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2024-02-08 19:43 UTC, Medical Mutual Services (ARIN) to Medical Mutual (ARIN); resources moved: 66.111.16.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240207.gz","retrieved_at":"2026-10-12T23:34:44+00:00","summary":"ARIN delegated statistics 2024-02-07 (produced 2024-02-07T14:00:43+00:00), before the report: allocated (dated 2002-10-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240209.gz","retrieved_at":"2026-10-12T23:34:59+00:00","summary":"ARIN delegated statistics 2024-02-09 (produced 2024-02-09T14:00:43+00:00), after the report: allocated (dated 2002-10-28)"}]}],"classification_history":{"e77c6b60510ad9bf":[{"raw_change_id":570110,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:13+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Medical Mutual Services (ARIN) to Medical Mutual (ARIN) on 2024-02-08 19:43 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}]},"arin_statistics_now":{"status":"allocated (dated 2002-10-28)"}}