{"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":"192.43.217.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/192.43.217.0-192.43.217.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1988-12-09)"},"current_holder":{"rir":"ARIN","org":"National Center for Atmospheric Research","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":29601,"date":"2022-11-15T21:59:46Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"NOAA/ERL Space Environment Laboratory","recipient_org":"National Center for Atmospheric Research","range":"192.43.217.0/24","log":"ARIN"}],"events":[{"event_id":"6036350f8a27290e","registry":"ARIN","report_date":"2022-11-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"192.43.217.0/24","start":"192.43.217.0","end":"192.43.217.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"NOAA/ERL Space Environment Laboratory","recipient_organization":"National Center for Atmospheric Research","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:04+00:00","page":"https://rirtracker.com/ip/192.43.217.0-192.43.217.255/#e-6036350f8a27290e","report_page":"https://rirtracker.com/arin/reports/2022-11-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.43.217.0-192.43.217.255.json","observed":"Merger/acquisition: NOAA/ERL Space Environment Laboratory (ARIN) to National Center for Atmospheric Research (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from NOAA/ERL Space Environment Laboratory (ARIN) to National Center for Atmospheric Research (ARIN) on 2022-11-15 21:59 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 2022-11-15 21:59 UTC, NOAA/ERL Space Environment Laboratory (ARIN) to National Center for Atmospheric Research (ARIN); resources moved: 192.43.217.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221114.gz","retrieved_at":"2026-10-12T23:10:57+00:00","summary":"ARIN delegated statistics 2022-11-14 (produced 2022-11-14T14:00:10+00:00), before the report: allocated (dated 1988-12-09)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221116.gz","retrieved_at":"2026-10-12T23:11:02+00:00","summary":"ARIN delegated statistics 2022-11-16 (produced 2022-11-16T14:00:11+00:00), after the report: allocated (dated 1988-12-09)"}]}],"classification_history":{"6036350f8a27290e":[{"raw_change_id":566658,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:04+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from NOAA/ERL Space Environment Laboratory (ARIN) to National Center for Atmospheric Research (ARIN) on 2022-11-15 21:59 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 1988-12-09)"}}