{"classifier_version":"1.1.0","generated":"2026-10-10T17:51:29+00:00","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by the American Registry for Internet Numbers (ARIN), the RIPE Network Coordination Centre (RIPE NCC), the Number Resource Organization (NRO), or any 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":"153.75.128.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/153.75.128.0-153.75.159.255/","statistics_now":{"registry":"RIPE NCC","file_date":"2026-10-09","status":"assigned (dated 1991-09-23)"},"current_holder":{"rir":"RIPE NCC","org":"Proton AG","how":"RIPE NCC's statistics for 2026-10-09 and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":121675,"date":"2026-07-15T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Proton AG","range":"153.75.128.0/19","log":"RIPE NCC"},{"id":44728,"date":"2026-07-15T14:25:45Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"NCR Voyix Corporation","recipient_org":"Proton AG","range":"153.75.128.0/19","log":"ARIN"}],"events":[{"event_id":"8f24d0112f136812","registry":"RIPE NCC","report_date":"2026-07-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"153.75.128.0/19","start":"153.75.128.0","end":"153.75.159.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Proton AG","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.1.0","classified_at":"2026-10-10T17:50:56+00:00","page":"https://rirtracker.com/ip/153.75.128.0-153.75.159.255/#e-8f24d0112f136812","report_page":"https://rirtracker.com/ripe/reports/2026-07-15/","evidence_url":"https://rirtracker.com/api/v1/events/8f24d0112f136812.json","observed":"Transfer: (no name) (ARIN) to Proton AG (RIPE NCC)","explanation":"RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Proton AG (RIPE NCC) on 2026-07-15 19:00 UTC: it came to RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-10T17:24:28+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2026-07-15 19:00 UTC, (no name) (ARIN) to Proton AG (RIPE NCC); resources moved: 153.75.128.0/19"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2026/delegated-ripencc-extended-20260714.bz2","retrieved_at":"2026-10-10T17:34:51+00:00","summary":"RIPE NCC delegated statistics 2026-07-14 (produced 2026-07-14T21:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2026/delegated-ripencc-extended-20260715.bz2","retrieved_at":"2026-10-10T17:34:55+00:00","summary":"RIPE NCC delegated statistics 2026-07-15 (produced 2026-07-15T21:59:59+00:00), after the change: assigned (dated 1991-09-23)"}]}],"classification_history":{"8f24d0112f136812":[{"raw_change_id":11668,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.1.0","classified_at":"2026-10-10T17:50:56+00:00","current":1,"public_explanation":"RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Proton AG (RIPE NCC) on 2026-07-15 19:00 UTC: it came to RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"file_date":"2026-10-10","status":"not listed"}}