{"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":"160.231.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/160.231.0.0-160.231.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1992-06-22) (only part of the range)"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[{"id":58854,"date":"2018-07-31T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"DASSAULT SYSTEMES SE","range":"160.231.64.0/18","log":"RIPE NCC"},{"id":14034,"date":"2018-07-31T14:37:52Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"Dassault Systemes Americas Corp.","recipient_org":"Dassault Systemes SE","range":"160.231.64.0/18","log":"ARIN"},{"id":10590,"date":"2017-08-02T15:05:21Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"Dassault Systemes Americas Corp.","recipient_org":"Dassault Systemes Australia Pty Ltd.","range":"160.231.128.0/18","log":"ARIN"},{"id":125486,"date":"2017-08-02T05:46:47Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"DSA-84","recipient_org":"DASSAULT SYSTEMES AUSTRALIA PTY LTD","range":"160.231.128.0/18","log":"APNIC"},{"id":8553,"date":"2017-01-12T18:56:44Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Dassault Systemes of America Corp.","recipient_org":"DASSAULT SYSTEMS AMERICASCORP","range":"160.231.0.0/16","log":"ARIN"}],"events":[{"event_id":"2d6bd5d6a473d51d","registry":"ARIN","report_date":"2017-01-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"160.231.0.0/16","start":"160.231.0.0","end":"160.231.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Dassault Systemes of America Corp.","recipient_organization":"DASSAULT SYSTEMS AMERICASCORP","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/160.231.0.0-160.231.255.255/#e-2d6bd5d6a473d51d","report_page":"https://rirtracker.com/arin/reports/2017-01-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/160.231.0.0-160.231.255.255.json","observed":"Merger/acquisition: Dassault Systemes of America Corp. (ARIN) to DASSAULT SYSTEMS AMERICASCORP (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Dassault Systemes of America Corp. (ARIN) to DASSAULT SYSTEMS AMERICASCORP (ARIN) on 2017-01-12 18:56 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 2017-01-12 18:56 UTC, Dassault Systemes of America Corp. (ARIN) to DASSAULT SYSTEMS AMERICASCORP (ARIN); resources moved: 160.231.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170111.gz","retrieved_at":"2026-10-12T21:22:04+00:00","summary":"ARIN delegated statistics 2017-01-11 (produced 2017-01-11T06:10:50+00:00), before the report: assigned (dated 1992-06-22)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170113.gz","retrieved_at":"2026-10-12T21:22:09+00:00","summary":"ARIN delegated statistics 2017-01-13 (produced 2017-01-13T06:08:44+00:00), after the report: assigned (dated 1992-06-22)"}]}],"classification_history":{"2d6bd5d6a473d51d":[{"raw_change_id":551323,"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 Dassault Systemes of America Corp. (ARIN) to DASSAULT SYSTEMS AMERICASCORP (ARIN) on 2017-01-12 18:56 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 1992-06-22) (only part of the range)"}}