{"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":"131.162.72.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/131.162.72.0-131.162.79.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1988-12-09)"},"current_holder":{"rir":"RIPE NCC","org":"lir-am-isaa-1-MNT","handle":"lir-am-isaa-1-MNT","how":"RDAP, looked up 2026-11-12 18:25 UTC"},"rdap_snapshots":[{"resource_type":"ipv4","start_key":"00000000000000000000000083a24800","end_key":"00000000000000000000000083a24fff","captured_at":"2026-11-12T18:25:09+00:00","reason":"first","authoritative_rir":"RIPE NCC","handle":"131.162.72.0 - 131.162.79.255","name":"AM-ISAA-19981209","status":"active","org_handle":"lir-am-isaa-1-MNT","org_name":"lir-am-isaa-1-MNT","country_code":"AM","registration_date":"2026-11-12T14:29:34Z","last_changed_date":"2026-11-12T14:29:34Z","rdap_url":"https://rdap.arin.net/registry/ip/131.162.72.0"}],"transfers":[{"id":134822,"date":"2026-11-12T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Information Systems Authority State Body","range":"131.162.72.0/21","log":"RIPE NCC"}],"events":[{"event_id":"0ee79533c2e595e1","registry":"RIPE NCC","report_date":"2026-11-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"131.162.72.0/21","start":"131.162.72.0","end":"131.162.79.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Information Systems Authority State Body","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":true,"classifier_version":"1.4.0","classified_at":"2026-11-12T18:50:34+00:00","page":"https://rirtracker.com/ip/131.162.72.0-131.162.79.255/#e-0ee79533c2e595e1","report_page":"https://rirtracker.com/ripe/reports/2026-11-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/131.162.72.0-131.162.79.255.json","observed":"Transfer: (no name) (ARIN) to Information Systems Authority State Body (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Information Systems Authority State Body (RIPE NCC) on 2026-11-12 19:00 UTC: it came to the 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":"2026-11-12T18:17:21+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2026-11-12 19:00 UTC, (no name) (ARIN) to Information Systems Authority State Body (RIPE NCC); resources moved: 131.162.72.0/21"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2026/delegated-ripencc-extended-20261111.bz2","retrieved_at":"2026-11-12T18:17:25+00:00","summary":"RIPE NCC delegated statistics 2026-11-11 (produced 2026-11-11T22:59:59+00:00), before the change: not listed"}]}],"classification_history":{"0ee79533c2e595e1":[{"raw_change_id":580405,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-11-12T18:50:34+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Information Systems Authority State Body (RIPE NCC) on 2026-11-12 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"allocated (dated 1988-12-09)"}}