{"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":"170.188.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/170.188.0.0-170.188.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1994-09-13)"},"current_holder":{"rir":"ARIN","org":"Intermountain Health Care, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":39034,"date":"2025-02-24T18:14:30Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Lutheran Medical Center","recipient_org":"Intermountain Health Care, Inc.","range":"170.188.0.0/16","log":"ARIN"}],"events":[{"event_id":"b11f37222863e46d","registry":"ARIN","report_date":"2025-02-24","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"170.188.0.0/16","start":"170.188.0.0","end":"170.188.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Lutheran Medical Center","recipient_organization":"Intermountain Health Care, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:20+00:00","page":"https://rirtracker.com/ip/170.188.0.0-170.188.255.255/#e-b11f37222863e46d","report_page":"https://rirtracker.com/arin/reports/2025-02-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/170.188.0.0-170.188.255.255.json","observed":"Merger/acquisition: Lutheran Medical Center (ARIN) to Intermountain Health Care, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Lutheran Medical Center (ARIN) to Intermountain Health Care, Inc. (ARIN) on 2025-02-24 18:14 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 2025-02-24 18:14 UTC, Lutheran Medical Center (ARIN) to Intermountain Health Care, Inc. (ARIN); resources moved: 170.188.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250223.gz","retrieved_at":"2026-10-12T23:55:23+00:00","summary":"ARIN delegated statistics 2025-02-23 (produced 2025-02-23T14:01:06+00:00), before the report: allocated (dated 1994-09-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250225.gz","retrieved_at":"2026-10-12T23:55:28+00:00","summary":"ARIN delegated statistics 2025-02-25 (produced 2025-02-25T14:01:06+00:00), after the report: allocated (dated 1994-09-13)"}]}],"classification_history":{"b11f37222863e46d":[{"raw_change_id":572921,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:20+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Lutheran Medical Center (ARIN) to Intermountain Health Care, Inc. (ARIN) on 2025-02-24 18:14 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 1994-09-13)"}}