{"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":"192.42.240.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/192.42.240.0-192.42.240.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1988-10-27)"},"current_holder":{"rir":"ARIN","org":"Synopsys Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":10182,"date":"2017-06-26T16:55:39Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Optical Research Associates","recipient_org":"Synopsys Inc.","range":"192.42.240.0/24","log":"ARIN"}],"events":[{"event_id":"48b8f8d0500a36b1","registry":"ARIN","report_date":"2017-06-26","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"192.42.240.0/24","start":"192.42.240.0","end":"192.42.240.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Optical Research Associates","recipient_organization":"Synopsys Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:30+00:00","page":"https://rirtracker.com/ip/192.42.240.0-192.42.240.255/#e-48b8f8d0500a36b1","report_page":"https://rirtracker.com/arin/reports/2017-06-26/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.42.240.0-192.42.240.255.json","observed":"Merger/acquisition: Optical Research Associates (ARIN) to Synopsys Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Optical Research Associates (ARIN) to Synopsys Inc. (ARIN) on 2017-06-26 16:55 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 2017-06-26 16:55 UTC, Optical Research Associates (ARIN) to Synopsys Inc. (ARIN); resources moved: 192.42.240.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170625.gz","retrieved_at":"2026-10-12T21:30:15+00:00","summary":"ARIN delegated statistics 2017-06-25 (produced 2017-06-25T05:24:15+00:00), before the report: assigned (dated 1988-10-27)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170627.gz","retrieved_at":"2026-10-12T21:30:20+00:00","summary":"ARIN delegated statistics 2017-06-27 (produced 2017-06-27T05:29:48+00:00), after the report: assigned (dated 1988-10-27)"}]}],"classification_history":{"48b8f8d0500a36b1":[{"raw_change_id":552526,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:30+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Optical Research Associates (ARIN) to Synopsys Inc. (ARIN) on 2017-06-26 16:55 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 1988-10-27)"}}