{"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":"AS31731","resource_type":"asn","page":"https://rirtracker.com/asn/31731/","statistics_now":{"registry":"RIPE NCC","status":"available"},"current_holder":{"rir":"RIPE NCC","org":null,"how":"The RIPE NCC's latest statistics"},"rdap_snapshots":[],"transfers":[{"id":76403,"date":"2021-03-08T19:00:00Z","type":"MERGER_ACQUISITION","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_org":"Adix B.V.","recipient_org":"Duocast B.V.","range":"AS31731","log":"RIPE NCC"}],"events":[{"event_id":"eca35224b9adbdc8","registry":"RIPE NCC","report_date":"2021-09-06","source":"statistics","raw_action":"RELEASED","raw_line":null,"resource_type":"asn","resource":"AS31731","start":31731,"end":31731,"classification":"HOLD_RELEASED","classification_label":"Released from hold (the RIPE NCC lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"The RIPE NCC's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:17+00:00","page":"https://rirtracker.com/asn/31731/#e-eca35224b9adbdc8","report_page":"https://rirtracker.com/ripe/reports/2021-09-06/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31731.json","observed":"AS31731 reserved on 2021-09-05, available on 2021-09-06","explanation":"The RIPE NCC's statistics show it reserved on 2021-09-05 and available on 2021-09-06. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"statistics_diff","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210906.bz2","retrieved_at":"2026-10-12T23:16:08+00:00","summary":"Found by comparing the RIPE NCC's daily statistics: AS31731 reserved on 2021-09-05, available on 2021-09-06"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210905.bz2","retrieved_at":"2026-10-12T23:16:05+00:00","summary":"RIPE NCC delegated statistics 2021-09-05 (produced 2021-09-05T21:59:00+00:00), before the change: reserved"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210906.bz2","retrieved_at":"2026-10-12T23:16:08+00:00","summary":"RIPE NCC delegated statistics 2021-09-06 (produced 2021-09-06T21:59:00+00:00), after the change: available"}]},{"event_id":"777e006a61e67a8a","registry":"RIPE NCC","report_date":"2021-03-08","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS31731","start":31731,"end":31731,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_organization":"Adix B.V.","recipient_organization":"Duocast B.V.","inventory_effect":"No effect on RIPE NCC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:31+00:00","page":"https://rirtracker.com/asn/31731/#e-777e006a61e67a8a","report_page":"https://rirtracker.com/ripe/reports/2021-03-08/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31731.json","observed":"Merger/acquisition: Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC) on 2021-03-08 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2021-03-08 19:00 UTC, Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC); resources moved: AS31731"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210307.bz2","retrieved_at":"2026-10-12T23:02:45+00:00","summary":"RIPE NCC delegated statistics 2021-03-07 (produced 2021-03-07T22:59:00+00:00), before the change: allocated (dated 2004-07-27)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210308.bz2","retrieved_at":"2026-10-12T23:02:48+00:00","summary":"RIPE NCC delegated statistics 2021-03-08 (produced 2021-03-08T22:59:00+00:00), after the change: allocated (dated 2004-07-27)"}]}],"classification_history":{"eca35224b9adbdc8":[{"raw_change_id":441739,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:57:04+00:00","current":0,"public_explanation":"The RIPE NCC's statistics show it reserved on 2021-09-05 and available on 2021-09-06. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":441739,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:24+00:00","current":0,"public_explanation":"The RIPE NCC's statistics show it reserved on 2021-09-05 and available on 2021-09-06. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":441739,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:05:22+00:00","current":0,"public_explanation":"The RIPE NCC's statistics show it reserved on 2021-09-05 and available on 2021-09-06. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":441739,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:17+00:00","current":1,"public_explanation":"The RIPE NCC's statistics show it reserved on 2021-09-05 and available on 2021-09-06. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed."}],"777e006a61e67a8a":[{"raw_change_id":76507,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:52:59+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC) on 2021-03-08 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":76507,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:03:28+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC) on 2021-03-08 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":76507,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:45:49+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC) on 2021-03-08 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":76507,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:31+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from Adix B.V. (RIPE NCC) to Duocast B.V. (RIPE NCC) on 2021-03-08 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."}]},"arin_statistics_now":{"status":"not listed"}}