{"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":"AS5521","resource_type":"asn","page":"https://rirtracker.com/asn/5521/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 1996-01-23)"},"current_holder":{"rir":"RIPE NCC","org":"PlusServer GmbH","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":54574,"date":"2017-09-18T19:00:00Z","type":"MERGER_ACQUISITION","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_org":"MCS Moorbek Computer Systeme GmbH","recipient_org":"PlusServer GmbH","range":"AS5521","log":"RIPE NCC"}],"events":[{"event_id":"52e2f62fc91380c6","registry":"RIPE NCC","report_date":"2017-09-18","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS5521","start":5521,"end":5521,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_organization":"MCS Moorbek Computer Systeme GmbH","recipient_organization":"PlusServer GmbH","inventory_effect":"No effect on RIPE NCC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:47:22+00:00","page":"https://rirtracker.com/asn/5521/#e-52e2f62fc91380c6","report_page":"https://rirtracker.com/ripe/reports/2017-09-18/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/5521.json","observed":"Merger/acquisition: MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC) on 2017-09-18 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 2017-09-18 19:00 UTC, MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC); resources moved: AS5521"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2017/delegated-ripencc-extended-20170917.bz2","retrieved_at":"2026-10-12T21:28:22+00:00","summary":"RIPE NCC delegated statistics 2017-09-17 (produced 2017-09-17T21:59:59+00:00), before the change: allocated (dated 1996-01-23)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2017/delegated-ripencc-extended-20170918.bz2","retrieved_at":"2026-10-12T21:28:25+00:00","summary":"RIPE NCC delegated statistics 2017-09-18 (produced 2017-09-18T21:59:59+00:00), after the change: allocated (dated 1996-01-23)"}]}],"classification_history":{"52e2f62fc91380c6":[{"raw_change_id":53768,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:43:15+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC) on 2017-09-18 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":53768,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:30+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC) on 2017-09-18 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":53768,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:44+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC) on 2017-09-18 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":53768,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:47:22+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from MCS Moorbek Computer Systeme GmbH (RIPE NCC) to PlusServer GmbH (RIPE NCC) on 2017-09-18 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."}]},"arin_statistics_now":{"status":"not listed"}}