{"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":"163.193.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/163.193.0.0-163.193.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1992-08-18)"},"current_holder":{"rir":"ARIN","org":"Nexstar Media Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":43798,"date":"2026-05-06T15:59:39Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Tribune Company","recipient_org":"Nexstar Media Inc.","range":"163.193.0.0/16","log":"ARIN"}],"events":[{"event_id":"323804c130e7ae0d","registry":"ARIN","report_date":"2026-05-06","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"163.193.0.0/16","start":"163.193.0.0","end":"163.193.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Tribune Company","recipient_organization":"Nexstar Media Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:27+00:00","page":"https://rirtracker.com/ip/163.193.0.0-163.193.255.255/#e-323804c130e7ae0d","report_page":"https://rirtracker.com/arin/reports/2026-05-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/163.193.0.0-163.193.255.255.json","observed":"Merger/acquisition: Tribune Company (ARIN) to Nexstar Media Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Tribune Company (ARIN) to Nexstar Media Inc. (ARIN) on 2026-05-06 15:59 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 2026-05-06 15:59 UTC, Tribune Company (ARIN) to Nexstar Media Inc. (ARIN); resources moved: 163.193.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260505","retrieved_at":"2026-10-09T19:00:54+00:00","summary":"ARIN delegated statistics 2026-05-05 (produced 2026-05-05T13:00:38+00:00), before the report: allocated (dated 1992-08-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260507","retrieved_at":"2026-10-09T19:01:00+00:00","summary":"ARIN delegated statistics 2026-05-07 (produced 2026-05-07T13:00:40+00:00), after the report: allocated (dated 1992-08-18)"}]}],"classification_history":{"323804c130e7ae0d":[{"raw_change_id":576018,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:27+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Tribune Company (ARIN) to Nexstar Media Inc. (ARIN) on 2026-05-06 15:59 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 1992-08-18)"}}