{"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":"137.57.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/137.57.0.0-137.57.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1990-07-05)"},"current_holder":{"rir":"ARIN","org":"Intel Corporation","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":13243,"date":"2018-05-23T16:49:44Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Altera Corporation","recipient_org":"Intel Corporation","range":"137.57.0.0/16","log":"ARIN"},{"id":9515,"date":"2017-05-18T11:44:30Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Altera Corporation","recipient_org":"Altera Corporation","range":"137.57.0.0/16","log":"ARIN"}],"events":[{"event_id":"76cd31c2cec990d2","registry":"ARIN","report_date":"2018-05-23","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"137.57.0.0/16","start":"137.57.0.0","end":"137.57.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Altera Corporation","recipient_organization":"Intel Corporation","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:36+00:00","page":"https://rirtracker.com/ip/137.57.0.0-137.57.255.255/#e-76cd31c2cec990d2","report_page":"https://rirtracker.com/arin/reports/2018-05-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/137.57.0.0-137.57.255.255.json","observed":"Merger/acquisition: Altera Corporation (ARIN) to Intel Corporation (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Altera Corporation (ARIN) to Intel Corporation (ARIN) on 2018-05-23 16:49 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 2018-05-23 16:49 UTC, Altera Corporation (ARIN) to Intel Corporation (ARIN); resources moved: 137.57.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180522.gz","retrieved_at":"2026-10-12T21:46:35+00:00","summary":"ARIN delegated statistics 2018-05-22 (produced 2018-05-22T05:00:24+00:00), before the report: assigned (dated 1990-07-05)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180524.gz","retrieved_at":"2026-10-12T21:46:40+00:00","summary":"ARIN delegated statistics 2018-05-24 (produced 2018-05-24T05:00:26+00:00), after the report: assigned (dated 1990-07-05)"}]},{"event_id":"e82e49bc65977691","registry":"ARIN","report_date":"2017-05-18","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"137.57.0.0/16","start":"137.57.0.0","end":"137.57.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Altera Corporation","recipient_organization":"Altera Corporation","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:29+00:00","page":"https://rirtracker.com/ip/137.57.0.0-137.57.255.255/#e-e82e49bc65977691","report_page":"https://rirtracker.com/arin/reports/2017-05-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/137.57.0.0-137.57.255.255.json","observed":"Merger/acquisition: Altera Corporation (ARIN) to Altera Corporation (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Altera Corporation (ARIN) to Altera Corporation (ARIN) on 2017-05-18 11:44 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 2017-05-18 11:44 UTC, Altera Corporation (ARIN) to Altera Corporation (ARIN); resources moved: 137.57.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170517.gz","retrieved_at":"2026-10-12T21:28:16+00:00","summary":"ARIN delegated statistics 2017-05-17 (produced 2017-05-17T05:10:33+00:00), before the report: assigned (dated 1990-07-05)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170519.gz","retrieved_at":"2026-10-12T21:28:21+00:00","summary":"ARIN delegated statistics 2017-05-19 (produced 2017-05-19T05:10:49+00:00), after the report: assigned (dated 1990-07-05)"}]}],"classification_history":{"76cd31c2cec990d2":[{"raw_change_id":554731,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:36+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Altera Corporation (ARIN) to Intel Corporation (ARIN) on 2018-05-23 16:49 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."}],"e82e49bc65977691":[{"raw_change_id":551953,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:29+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Altera Corporation (ARIN) to Altera Corporation (ARIN) on 2017-05-18 11:44 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 1990-07-05)"}}