{"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":"198.97.39.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/198.97.39.0-198.97.39.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1993-03-12)"},"current_holder":{"rir":"ARIN","org":"University of Iowa","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":34823,"date":"2024-03-08T21:38:03Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"MERCY HOSPITAL, IOWA CITY, IOWA","recipient_org":"University of Iowa","range":"198.97.39.0/24","log":"ARIN"}],"events":[{"event_id":"0b1e000bf455eb72","registry":"ARIN","report_date":"2024-03-08","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"198.97.39.0/24","start":"198.97.39.0","end":"198.97.39.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"MERCY HOSPITAL, IOWA CITY, IOWA","recipient_organization":"University of Iowa","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:14+00:00","page":"https://rirtracker.com/ip/198.97.39.0-198.97.39.255/#e-0b1e000bf455eb72","report_page":"https://rirtracker.com/arin/reports/2024-03-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.97.39.0-198.97.39.255.json","observed":"Merger/acquisition: MERCY HOSPITAL, IOWA CITY, IOWA (ARIN) to University of Iowa (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from MERCY HOSPITAL, IOWA CITY, IOWA (ARIN) to University of Iowa (ARIN) on 2024-03-08 21:38 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 2024-03-08 21:38 UTC, MERCY HOSPITAL, IOWA CITY, IOWA (ARIN) to University of Iowa (ARIN); resources moved: 198.97.39.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240307.gz","retrieved_at":"2026-10-12T23:36:18+00:00","summary":"ARIN delegated statistics 2024-03-07 (produced 2024-03-07T14:00:46+00:00), before the report: allocated (dated 1993-03-12)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240309.gz","retrieved_at":"2026-10-12T23:36:34+00:00","summary":"ARIN delegated statistics 2024-03-09 (produced 2024-03-09T14:00:44+00:00), after the report: allocated (dated 1993-03-12)"}]}],"classification_history":{"0b1e000bf455eb72":[{"raw_change_id":570515,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:14+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from MERCY HOSPITAL, IOWA CITY, IOWA (ARIN) to University of Iowa (ARIN) on 2024-03-08 21:38 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 1993-03-12)"}}