{"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":"131.149.232.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/131.149.232.0-131.149.239.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2025-09-04)"},"current_holder":{"rir":"ARIN","org":"Notion Labs, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":41219,"date":"2025-09-04T18:50:22Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Charter Communications LLC","recipient_org":"Notion Labs, Inc.","range":"131.149.232.0/21","log":"ARIN"},{"id":11456,"date":"2017-11-27T15:01:18Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Northern Telecom Canada Ltd.","recipient_org":"Charter Communications","range":"131.149.0.0/16","log":"ARIN"}],"events":[{"event_id":"f022e4fd975b84ee","registry":"ARIN","report_date":"2025-09-04","source":"arin_issued","raw_action":"ADD","raw_line":"Add 131.149.232.0-131.149.239.255","resource_type":"ipv4","resource":"131.149.232.0/21","start":"131.149.232.0","end":"131.149.239.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Charter Communications LLC","recipient_organization":"Notion Labs, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:34+00:00","page":"https://rirtracker.com/ip/131.149.232.0-131.149.239.255/#e-f022e4fd975b84ee","report_page":"https://rirtracker.com/arin/reports/2025-09-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/131.149.232.0-131.149.239.255.json","explanation":"ARIN's transfer log records a transfer from Charter Communications LLC (ARIN) to Notion Labs, Inc. (ARIN) on 2025-09-04 18:50 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/2025-September/006109.html","retrieved_at":"2026-10-12T18:43:09+00:00","summary":"ARIN-Issued report for 2025-09-04: \"Add 131.149.232.0-131.149.239.255\""},{"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 2025-09-04 18:50 UTC, Charter Communications LLC (ARIN) to Notion Labs, Inc. (ARIN); resources moved: 131.149.232.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250903.gz","retrieved_at":"2026-10-13T00:06:03+00:00","summary":"ARIN delegated statistics 2025-09-03 (produced 2025-09-03T13:00:51+00:00), before the report: allocated (dated 2017-11-27)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250905.gz","retrieved_at":"2026-10-13T00:06:20+00:00","summary":"ARIN delegated statistics 2025-09-05 (produced 2025-09-05T13:00:50+00:00), after the report: allocated (dated 2025-09-04)"}]}],"classification_history":{"f022e4fd975b84ee":[{"raw_change_id":195745,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:07:35+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Charter Communications LLC (ARIN) to Notion Labs, Inc. (ARIN) on 2025-09-04 18:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":195745,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:05+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Charter Communications LLC (ARIN) to Notion Labs, Inc. (ARIN) on 2025-09-04 18:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":195745,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:00+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Charter Communications LLC (ARIN) to Notion Labs, Inc. (ARIN) on 2025-09-04 18:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":195745,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:34+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Charter Communications LLC (ARIN) to Notion Labs, Inc. (ARIN) on 2025-09-04 18:50 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 2025-09-04)"}}