{"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":"91.139.0.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/91.139.0.0-91.139.127.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 2007-05-22)"},"current_holder":{"rir":"RIPE NCC","org":"T-Mobile Czech Republic  a.s.","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":46038,"date":"2013-11-20T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_org":"Externet Nyrt","recipient_org":"T-Mobile Czech Republic  a.s.","range":"91.139.0.0/17","log":"RIPE NCC"}],"events":[{"event_id":"6f4e19322a82f89a","registry":"RIPE NCC","report_date":"2013-11-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"91.139.0.0/17","start":"91.139.0.0","end":"91.139.127.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-RIPE NCC transfer","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_organization":"Externet Nyrt","recipient_organization":"T-Mobile Czech Republic  a.s.","inventory_effect":"No effect on RIPE NCC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:59+00:00","page":"https://rirtracker.com/ip/91.139.0.0-91.139.127.255/#e-6f4e19322a82f89a","report_page":"https://rirtracker.com/ripe/reports/2013-11-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/91.139.0.0-91.139.127.255.json","observed":"Transfer: Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a transfer from Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC) on 2013-11-20 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: RESOURCE_TRANSFER on 2013-11-20 19:00 UTC, Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC); resources moved: 91.139.0.0/17"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2013/delegated-ripencc-extended-20131119.bz2","retrieved_at":"2026-10-12T19:49:38+00:00","summary":"RIPE NCC delegated statistics 2013-11-19 (produced 2013-11-19T22:59:59+00:00), before the change: allocated (dated 2007-05-22)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2013/delegated-ripencc-extended-20131120.bz2","retrieved_at":"2026-10-12T19:49:41+00:00","summary":"RIPE NCC delegated statistics 2013-11-20 (produced 2013-11-20T22:59:59+00:00), after the change: allocated (dated 2007-05-22)"}]}],"classification_history":{"6f4e19322a82f89a":[{"raw_change_id":44788,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:39:43+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC) on 2013-11-20 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":44788,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:10+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC) on 2013-11-20 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":44788,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:22+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC) on 2013-11-20 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":44788,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:59+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from Externet Nyrt (RIPE NCC) to T-Mobile Czech Republic  a.s. (RIPE NCC) on 2013-11-20 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."}]},"arin_statistics_now":{"status":"not listed"}}