{"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":"AS31601","resource_type":"asn","page":"https://rirtracker.com/asn/31601/","statistics_now":{"registry":"RIPE NCC","status":"reserved"},"current_holder":{"rir":"RIPE NCC","org":null,"how":"The RIPE NCC's latest statistics"},"rdap_snapshots":[{"resource_type":"asn","start_key":"00000000000000000000000000007b71","end_key":"00000000000000000000000000007b71","captured_at":"2026-11-06T18:18:17+00:00","reason":"7d","authoritative_rir":"RIPE NCC","rdap_url":"https://rdap.db.ripe.net/autnum/31601","error":"not registered (RDAP 404)"},{"resource_type":"asn","start_key":"00000000000000000000000000007b71","end_key":"00000000000000000000000000007b71","captured_at":"2026-10-31T18:21:50+00:00","reason":"24h","authoritative_rir":"RIPE NCC","rdap_url":"https://rdap.db.ripe.net/autnum/31601","error":"not registered (RDAP 404)"},{"resource_type":"asn","start_key":"00000000000000000000000000007b71","end_key":"00000000000000000000000000007b71","captured_at":"2026-10-30T18:18:04+00:00","reason":"first","authoritative_rir":"RIPE NCC","rdap_url":"https://rdap.db.ripe.net/autnum/31601","error":"not registered (RDAP 404)"}],"transfers":[{"id":77108,"date":"2021-03-30T19:00:00Z","type":"MERGER_ACQUISITION","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_org":"WirtschaftsBlatt Verlag AG","recipient_org":"Styria Media Group AG","range":"AS31601","log":"RIPE NCC"}],"events":[{"event_id":"c3449e81368605d5","registry":"RIPE NCC","report_date":"2026-10-29","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"asn","resource":"AS31601","start":31601,"end":31601,"classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-30T18:22:00+00:00","page":"https://rirtracker.com/asn/31601/#e-c3449e81368605d5","report_page":"https://rirtracker.com/ripe/reports/2026-10-29/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31601.json","observed":"AS31601 allocated on 2026-10-28, reserved on 2026-10-29","hold":{"hold_rule_source_url":"https://www.ripe.net/manage-ips-and-asns/resource-management/quarantine-for-returned-internet-number-resources","hold_rule_days":180,"estimated_hold_end":"2027-04-27","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. The tracker found it by comparing the RIPE NCC's daily statistics. The RIPE NCC's statistics show it allocated (dated 2004-06-21) on 2026-10-28 and reserved on 2026-10-29. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC holds returned, revoked and reclaimed ASNs for 180 days (six months), or longer while still routed, before reissuing them, so the estimated hold end is 2027-04-27. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.ripe.net/pub/stats/ripencc/2026/delegated-ripencc-extended-20261029.bz2","retrieved_at":"2026-10-30T18:17:20+00:00","summary":"Found by comparing the RIPE NCC's daily statistics: AS31601 allocated on 2026-10-28, reserved on 2026-10-29"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2026/delegated-ripencc-extended-20261028.bz2","retrieved_at":"2026-10-29T18:17:23+00:00","summary":"RIPE NCC delegated statistics 2026-10-28 (produced 2026-10-28T22:59:59+00:00), before the change: allocated (dated 2004-06-21)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2026/delegated-ripencc-extended-20261029.bz2","retrieved_at":"2026-10-30T18:17:20+00:00","summary":"RIPE NCC delegated statistics 2026-10-29 (produced 2026-10-29T22:59:59+00:00), after the change: reserved"}]},{"event_id":"c19a4bd4e2c9a790","registry":"RIPE NCC","report_date":"2021-03-30","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS31601","start":31601,"end":31601,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_organization":"WirtschaftsBlatt Verlag AG","recipient_organization":"Styria Media Group AG","inventory_effect":"No effect on RIPE NCC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:33+00:00","page":"https://rirtracker.com/asn/31601/#e-c19a4bd4e2c9a790","report_page":"https://rirtracker.com/ripe/reports/2021-03-30/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/31601.json","observed":"Merger/acquisition: WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC) on 2021-03-30 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 2021-03-30 19:00 UTC, WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC); resources moved: AS31601"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210329.bz2","retrieved_at":"2026-10-12T23:04:11+00:00","summary":"RIPE NCC delegated statistics 2021-03-29 (produced 2021-03-29T21:59:00+00:00), before the change: allocated (dated 2004-06-21)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210330.bz2","retrieved_at":"2026-10-12T23:04:34+00:00","summary":"RIPE NCC delegated statistics 2021-03-30 (produced 2021-03-30T21:59:00+00:00), after the change: allocated (dated 2004-06-21)"}]}],"classification_history":{"c3449e81368605d5":[{"raw_change_id":579184,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-30T18:22:00+00:00","current":1,"public_explanation":"Removed from active registration. The tracker found it by comparing the RIPE NCC's daily statistics. The RIPE NCC's statistics show it allocated (dated 2004-06-21) on 2026-10-28 and reserved on 2026-10-29. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC holds returned, revoked and reclaimed ASNs for 180 days (six months), or longer while still routed, before reissuing them, so the estimated hold end is 2027-04-27. This does not confirm availability."}],"c19a4bd4e2c9a790":[{"raw_change_id":77223,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:53:18+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC) on 2021-03-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":77223,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:03:30+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC) on 2021-03-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":77223,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:45:50+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC) on 2021-03-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":77223,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:33+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from WirtschaftsBlatt Verlag AG (RIPE NCC) to Styria Media Group AG (RIPE NCC) on 2021-03-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."}]},"arin_statistics_now":{"status":"not listed"}}