{"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":"198.179.0.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/198.179.0.0-198.179.3.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1993-05-21)"},"current_holder":{"rir":"ARIN","org":"U.S. Dept. of Health and Human Services","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":8281,"date":"2016-11-29T19:07:36Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Agency for Health Care Policy & Research","recipient_org":"U.S. Dept. of Health and Human Services","range":"198.179.0.0/22","log":"ARIN"}],"events":[{"event_id":"fd9a01588e44a495","registry":"ARIN","report_date":"2016-11-29","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"198.179.0.0/22","start":"198.179.0.0","end":"198.179.3.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Agency for Health Care Policy & Research","recipient_organization":"U.S. Dept. of Health and Human Services","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:27+00:00","page":"https://rirtracker.com/ip/198.179.0.0-198.179.3.255/#e-fd9a01588e44a495","report_page":"https://rirtracker.com/arin/reports/2016-11-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.179.0.0-198.179.3.255.json","observed":"Merger/acquisition: Agency for Health Care Policy & Research (ARIN) to U.S. Dept. of Health and Human Services (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Agency for Health Care Policy & Research (ARIN) to U.S. Dept. of Health and Human Services (ARIN) on 2016-11-29 19:07 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 2016-11-29 19:07 UTC, Agency for Health Care Policy & Research (ARIN) to U.S. Dept. of Health and Human Services (ARIN); resources moved: 198.179.0.0/22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161128.gz","retrieved_at":"2026-10-12T21:20:04+00:00","summary":"ARIN delegated statistics 2016-11-28 (produced 2016-11-28T06:10:14+00:00), before the report: allocated (dated 1993-05-21)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161130.gz","retrieved_at":"2026-10-12T21:20:09+00:00","summary":"ARIN delegated statistics 2016-11-30 (produced 2016-11-30T06:09:11+00:00), after the report: allocated (dated 1993-05-21)"}]}],"classification_history":{"fd9a01588e44a495":[{"raw_change_id":551164,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:27+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Agency for Health Care Policy & Research (ARIN) to U.S. Dept. of Health and Human Services (ARIN) on 2016-11-29 19:07 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 1993-05-21)"}}