{"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":"144.129.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/144.129.0.0-144.129.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2018-07-16)"},"current_holder":{"rir":"ARIN","org":"Charter Communications","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":13653,"date":"2018-07-16T16:10:37Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Kubotek USA, Inc.","recipient_org":"Charter Communications","range":"144.129.0.0/16","log":"ARIN"},{"id":12925,"date":"2018-04-19T18:13:21Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Cadkey, Inc.","recipient_org":"Kubotek USA, Inc.","range":"144.129.0.0/16","log":"ARIN"}],"events":[{"event_id":"d1f959112e61d371","registry":"ARIN","report_date":"2018-07-16","source":"arin_issued","raw_action":"ADD","raw_line":"Add 144.129.0.0-144.129.255.255","resource_type":"ipv4","resource":"144.129.0.0/16","start":"144.129.0.0","end":"144.129.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Kubotek USA, Inc.","recipient_organization":"Charter Communications","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:13+00:00","page":"https://rirtracker.com/ip/144.129.0.0-144.129.255.255/#e-d1f959112e61d371","report_page":"https://rirtracker.com/arin/reports/2018-07-16/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.129.0.0-144.129.255.255.json","explanation":"ARIN's transfer log records a transfer from Kubotek USA, Inc. (ARIN) to Charter Communications (ARIN) on 2018-07-16 16:10 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-July/003505.html","retrieved_at":"2026-10-12T18:40:07+00:00","summary":"ARIN-Issued report for 2018-07-16: \"Add 144.129.0.0-144.129.255.255\""},{"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 2018-07-16 16:10 UTC, Kubotek USA, Inc. (ARIN) to Charter Communications (ARIN); resources moved: 144.129.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180715.gz","retrieved_at":"2026-10-12T21:49:18+00:00","summary":"ARIN delegated statistics 2018-07-15 (produced 2018-07-15T05:00:24+00:00), before the report: assigned (dated 1990-12-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180717.gz","retrieved_at":"2026-10-12T21:49:23+00:00","summary":"ARIN delegated statistics 2018-07-17 (produced 2018-07-17T05:00:25+00:00), after the report: allocated (dated 2018-07-16)"}]},{"event_id":"760512bc7a7807df","registry":"ARIN","report_date":"2018-04-19","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"144.129.0.0/16","start":"144.129.0.0","end":"144.129.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Cadkey, Inc.","recipient_organization":"Kubotek USA, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:35+00:00","page":"https://rirtracker.com/ip/144.129.0.0-144.129.255.255/#e-760512bc7a7807df","report_page":"https://rirtracker.com/arin/reports/2018-04-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.129.0.0-144.129.255.255.json","observed":"Merger/acquisition: Cadkey, Inc. (ARIN) to Kubotek USA, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cadkey, Inc. (ARIN) to Kubotek USA, Inc. (ARIN) on 2018-04-19 18:13 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 2018-04-19 18:13 UTC, Cadkey, Inc. (ARIN) to Kubotek USA, Inc. (ARIN); resources moved: 144.129.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180418.gz","retrieved_at":"2026-10-12T21:44:56+00:00","summary":"ARIN delegated statistics 2018-04-18 (produced 2018-04-18T05:09:51+00:00), before the report: assigned (dated 1990-12-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180420.gz","retrieved_at":"2026-10-12T21:45:01+00:00","summary":"ARIN delegated statistics 2018-04-20 (produced 2018-04-20T05:10:58+00:00), after the report: assigned (dated 1990-12-10)"}]}],"classification_history":{"d1f959112e61d371":[{"raw_change_id":155489,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:46+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Kubotek USA, Inc. (ARIN) to Charter Communications (ARIN) on 2018-07-16 16:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":155489,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:20+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Kubotek USA, Inc. (ARIN) to Charter Communications (ARIN) on 2018-07-16 16:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":155489,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:01+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Kubotek USA, Inc. (ARIN) to Charter Communications (ARIN) on 2018-07-16 16:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":155489,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:13+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Kubotek USA, Inc. (ARIN) to Charter Communications (ARIN) on 2018-07-16 16:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"760512bc7a7807df":[{"raw_change_id":554477,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:35+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cadkey, Inc. (ARIN) to Kubotek USA, Inc. (ARIN) on 2018-04-19 18:13 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 2018-07-16)"}}