{"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":"81.163.128.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/81.163.128.0-81.163.159.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 2011-09-01)"},"current_holder":{"rir":"RIPE NCC","org":"Level-Msk Ltd.","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":53256,"date":"2017-03-21T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_org":"Didan Group LTD","recipient_org":"Level-Msk Ltd.","range":"81.163.128.0/19","log":"RIPE NCC"}],"events":[{"event_id":"d632b33d7707bdf1","registry":"RIPE NCC","report_date":"2017-03-21","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"81.163.128.0/19","start":"81.163.128.0","end":"81.163.159.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-RIPE NCC transfer","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_organization":"Didan Group LTD","recipient_organization":"Level-Msk Ltd.","inventory_effect":"No effect on RIPE NCC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:47:18+00:00","page":"https://rirtracker.com/ip/81.163.128.0-81.163.159.255/#e-d632b33d7707bdf1","report_page":"https://rirtracker.com/ripe/reports/2017-03-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/81.163.128.0-81.163.159.255.json","observed":"Transfer: Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a transfer from Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC) on 2017-03-21 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 2017-03-21 19:00 UTC, Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC); resources moved: 81.163.128.0/19"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2017/delegated-ripencc-extended-20170320.bz2","retrieved_at":"2026-10-12T21:16:09+00:00","summary":"RIPE NCC delegated statistics 2017-03-20 (produced 2017-03-20T22:59:59+00:00), before the change: assigned (dated 2011-09-01)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2017/delegated-ripencc-extended-20170321.bz2","retrieved_at":"2026-10-12T21:16:26+00:00","summary":"RIPE NCC delegated statistics 2017-03-21 (produced 2017-03-21T22:59:59+00:00), after the change: assigned (dated 2011-09-01)"}]},{"event_id":"9808966b61a13cf7","registry":"RIPE NCC","report_date":"2011-09-01","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"81.163.128.0/19","start":"81.163.128.0","end":"81.163.159.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from RIPE NCC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:40+00:00","page":"https://rirtracker.com/ip/81.163.128.0-81.163.159.255/#e-9808966b61a13cf7","report_page":"https://rirtracker.com/ripe/reports/2011-09-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/81.163.128.0-81.163.159.255.json","observed":"81.163.128.0/19 available on 2011-08-31, assigned on 2011-09-01","explanation":"No transfer record matches. The RIPE NCC's statistics show it available on 2011-08-31 and assigned (dated 2011-09-01) on 2011-09-01. The tracker saw this range released from hold on 2011-08-02 (81.163.0.0/16), so it appears to have been issued again from the RIPE NCC's pool.","evidence":[{"type":"statistics_diff","url":"https://ftp.ripe.net/pub/stats/ripencc/2011/delegated-ripencc-extended-20110901.bz2","retrieved_at":"2026-10-12T19:02:40+00:00","summary":"Found by comparing the RIPE NCC's daily statistics: 81.163.128.0/19 available on 2011-08-31, assigned on 2011-09-01"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2011/delegated-ripencc-extended-20110831.bz2","retrieved_at":"2026-10-12T19:02:37+00:00","summary":"RIPE NCC delegated statistics 2011-08-31 (produced 2011-08-31T21:59:59+00:00), before the change: available"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2011/delegated-ripencc-extended-20110901.bz2","retrieved_at":"2026-10-12T19:02:40+00:00","summary":"RIPE NCC delegated statistics 2011-09-01 (produced 2011-09-01T21:59:59+00:00), after the change: assigned (dated 2011-09-01)"}]}],"classification_history":{"d632b33d7707bdf1":[{"raw_change_id":52407,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:42:42+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC) on 2017-03-21 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":52407,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:26+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC) on 2017-03-21 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":52407,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:40+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC) on 2017-03-21 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":52407,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:47:18+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from Didan Group LTD (RIPE NCC) to Level-Msk Ltd. (RIPE NCC) on 2017-03-21 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."}],"9808966b61a13cf7":[{"raw_change_id":215591,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:14:41+00:00","current":0,"public_explanation":"No transfer record matches. The RIPE NCC's statistics show it available on 2011-08-31 and assigned (dated 2011-09-01) on 2011-09-01. The tracker saw this range released from hold on 2011-08-02 (81.163.0.0/16), so it appears to have been issued again from the RIPE NCC's pool."},{"raw_change_id":215591,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:02+00:00","current":0,"public_explanation":"No transfer record matches. The RIPE NCC's statistics show it available on 2011-08-31 and assigned (dated 2011-09-01) on 2011-09-01. The tracker saw this range released from hold on 2011-08-02 (81.163.0.0/16), so it appears to have been issued again from the RIPE NCC's pool."},{"raw_change_id":215591,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:02+00:00","current":0,"public_explanation":"No transfer record matches. The RIPE NCC's statistics show it available on 2011-08-31 and assigned (dated 2011-09-01) on 2011-09-01. The tracker saw this range released from hold on 2011-08-02 (81.163.0.0/16), so it appears to have been issued again from the RIPE NCC's pool."},{"raw_change_id":215591,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:40+00:00","current":1,"public_explanation":"No transfer record matches. The RIPE NCC's statistics show it available on 2011-08-31 and assigned (dated 2011-09-01) on 2011-09-01. The tracker saw this range released from hold on 2011-08-02 (81.163.0.0/16), so it appears to have been issued again from the RIPE NCC's pool."}]},"arin_statistics_now":{"status":"not listed"}}