{"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":"207.54.64.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/207.54.64.0-207.54.95.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2018-11-30)"},"current_holder":{"rir":"ARIN","org":"Cisco Systems Ironport Division","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":16500,"date":"2018-11-30T17:09:48Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"CoreComm Internet Services Inc","recipient_org":"Cisco Systems Ironport Division","range":"207.54.64.0/19","log":"ARIN"}],"events":[{"event_id":"3dbab5813a62684e","registry":"ARIN","report_date":"2018-11-30","source":"arin_issued","raw_action":"ADD","raw_line":"Add 207.54.64.0-207.54.95.255","resource_type":"ipv4","resource":"207.54.64.0/19","start":"207.54.64.0","end":"207.54.95.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"CoreComm Internet Services Inc","recipient_organization":"Cisco Systems Ironport Division","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:21+00:00","page":"https://rirtracker.com/ip/207.54.64.0-207.54.95.255/#e-3dbab5813a62684e","report_page":"https://rirtracker.com/arin/reports/2018-11-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/207.54.64.0-207.54.95.255.json","explanation":"ARIN's transfer log records a transfer from CoreComm Internet Services Inc (ARIN) to Cisco Systems Ironport Division (ARIN) on 2018-11-30 17:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-November/003642.html","retrieved_at":"2026-10-12T18:40:16+00:00","summary":"ARIN-Issued report for 2018-11-30: \"Add 207.54.64.0-207.54.95.255\""},{"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: RESOURCE_TRANSFER on 2018-11-30 17:09 UTC, CoreComm Internet Services Inc (ARIN) to Cisco Systems Ironport Division (ARIN); resources moved: 207.54.64.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181129.gz","retrieved_at":"2026-10-12T21:56:26+00:00","summary":"ARIN delegated statistics 2018-11-29 (produced 2018-11-29T06:00:10+00:00), before the report: allocated (dated 1999-05-03)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181201.gz","retrieved_at":"2026-10-12T21:56:31+00:00","summary":"ARIN delegated statistics 2018-12-01 (produced 2018-12-01T06:00:12+00:00), after the report: assigned (dated 2018-11-30)"}]}],"classification_history":{"3dbab5813a62684e":[{"raw_change_id":157354,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:42:57+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CoreComm Internet Services Inc (ARIN) to Cisco Systems Ironport Division (ARIN) on 2018-11-30 17:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":157354,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:25+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CoreComm Internet Services Inc (ARIN) to Cisco Systems Ironport Division (ARIN) on 2018-11-30 17:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":157354,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:08+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CoreComm Internet Services Inc (ARIN) to Cisco Systems Ironport Division (ARIN) on 2018-11-30 17:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":157354,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:21+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from CoreComm Internet Services Inc (ARIN) to Cisco Systems Ironport Division (ARIN) on 2018-11-30 17:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2018-11-30)"}}