{"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":"144.196.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/144.196.0.0-144.196.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2021-10-21)"},"current_holder":{"rir":"ARIN","org":"Cisco Webex LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":25844,"date":"2021-10-21T23:05:34Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Fairchild Holdings","recipient_org":"Cisco Webex LLC","range":"144.196.0.0/16","log":"ARIN"},{"id":25640,"date":"2021-09-27T14:50:39Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"National Medical Transportation Network","recipient_org":"Fairchild Holdings","range":"144.196.0.0/16","log":"ARIN"}],"events":[{"event_id":"999b8b484549193c","registry":"ARIN","report_date":"2021-10-21","source":"arin_issued","raw_action":"ADD","raw_line":"Add 144.196.0.0-144.196.255.255","resource_type":"ipv4","resource":"144.196.0.0/16","start":"144.196.0.0","end":"144.196.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Fairchild Holdings","recipient_organization":"Cisco Webex LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:16+00:00","page":"https://rirtracker.com/ip/144.196.0.0-144.196.255.255/#e-999b8b484549193c","report_page":"https://rirtracker.com/arin/reports/2021-10-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.196.0.0-144.196.255.255.json","explanation":"ARIN's transfer log records a transfer from Fairchild Holdings (ARIN) to Cisco Webex LLC (ARIN) on 2021-10-21 23:05 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/2021-October/004696.html","retrieved_at":"2026-10-12T18:41:30+00:00","summary":"ARIN-Issued report for 2021-10-21: \"Add 144.196.0.0-144.196.255.255\""},{"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 2021-10-21 23:05 UTC, Fairchild Holdings (ARIN) to Cisco Webex LLC (ARIN); resources moved: 144.196.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211020.gz","retrieved_at":"2026-10-12T22:50:43+00:00","summary":"ARIN delegated statistics 2021-10-20 (produced 2021-10-20T14:00:13+00:00), before the report: assigned (dated 1990-12-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211022.gz","retrieved_at":"2026-10-12T22:50:58+00:00","summary":"ARIN delegated statistics 2021-10-22 (produced 2021-10-22T14:00:13+00:00), after the report: allocated (dated 2021-10-21)"}]},{"event_id":"bfbb14bac510a133","registry":"ARIN","report_date":"2021-09-27","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"144.196.0.0/16","start":"144.196.0.0","end":"144.196.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"National Medical Transportation Network","recipient_organization":"Fairchild Holdings","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:58+00:00","page":"https://rirtracker.com/ip/144.196.0.0-144.196.255.255/#e-bfbb14bac510a133","report_page":"https://rirtracker.com/arin/reports/2021-09-27/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.196.0.0-144.196.255.255.json","observed":"Merger/acquisition: National Medical Transportation Network (ARIN) to Fairchild Holdings (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from National Medical Transportation Network (ARIN) to Fairchild Holdings (ARIN) on 2021-09-27 14:50 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 2021-09-27 14:50 UTC, National Medical Transportation Network (ARIN) to Fairchild Holdings (ARIN); resources moved: 144.196.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210926.gz","retrieved_at":"2026-10-12T22:49:33+00:00","summary":"ARIN delegated statistics 2021-09-26 (produced 2021-09-26T14:00:13+00:00), before the report: assigned (dated 1990-12-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210928.gz","retrieved_at":"2026-10-12T22:49:38+00:00","summary":"ARIN delegated statistics 2021-09-28 (produced 2021-09-28T14:00:13+00:00), after the report: assigned (dated 1990-12-20)"}]}],"classification_history":{"999b8b484549193c":[{"raw_change_id":173786,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:54:05+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Fairchild Holdings (ARIN) to Cisco Webex LLC (ARIN) on 2021-10-21 23:05 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":173786,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:07+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Fairchild Holdings (ARIN) to Cisco Webex LLC (ARIN) on 2021-10-21 23:05 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":173786,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:55+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Fairchild Holdings (ARIN) to Cisco Webex LLC (ARIN) on 2021-10-21 23:05 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":173786,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:16+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Fairchild Holdings (ARIN) to Cisco Webex LLC (ARIN) on 2021-10-21 23:05 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"bfbb14bac510a133":[{"raw_change_id":563895,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:58+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from National Medical Transportation Network (ARIN) to Fairchild Holdings (ARIN) on 2021-09-27 14:50 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 2021-10-21)"}}