{"classifier_version":"1.0.0","generated":"2026-10-09T21:19:22+00:00","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by the American Registry for Internet Numbers (ARIN), the Number Resource Organization (NRO), or any 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":"151.123.176.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/151.123.176.0-151.123.183.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"not listed"},"current_holder":{"rir":"RIPE NCC","org":"3xK Tech GmbH","how":"the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":43047,"date":"2026-03-02T15:27:19Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"INV Performance Surfaces, LLC ","recipient_org":"3xK Tech GmbH","range":"151.123.176.0/21"}],"events":[{"event_id":"4a18500ab4306756","report_date":"2026-03-02","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"151.123.176.0/21","start":"151.123.176.0","end":"151.123.183.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"INV Performance Surfaces, LLC ","recipient_organization":"3xK Tech GmbH","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:28+00:00","page":"https://rirtracker.com/ip/151.123.176.0-151.123.183.255/#e-4a18500ab4306756","evidence_url":"https://rirtracker.com/api/v1/events/4a18500ab4306756.json","piece_of":{"resource":"151.123.176.0/20","page":"https://rirtracker.com/ip/151.123.176.0-151.123.191.255/"},"explanation":"ARIN's transfer log records a transfer from INV Performance Surfaces, LLC  (ARIN) to 3xK Tech GmbH (RIPE NCC) on 2026-03-02 15:27 UTC: it left ARIN for RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260303","retrieved_at":"2026-10-09T18:57:32+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 151.123.176.0/21 allocated on 2026-03-02, not listed on 2026-03-03"},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-09T18:54:15+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2026-03-02 15:27 UTC, INV Performance Surfaces, LLC  (ARIN) to 3xK Tech GmbH (RIPE NCC); resources moved: 151.123.176.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260301","retrieved_at":"2026-10-09T18:57:25+00:00","summary":"ARIN delegated statistics 2026-03-01 (produced 2026-03-01T14:00:49+00:00), before the report: allocated (dated 1991-06-17)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260303","retrieved_at":"2026-10-09T18:57:32+00:00","summary":"ARIN delegated statistics 2026-03-03 (produced 2026-03-03T14:00:51+00:00), after the report: not listed"}]}],"classification_history":{"4a18500ab4306756":[{"raw_change_id":6056,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:28+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from INV Performance Surfaces, LLC  (ARIN) to 3xK Tech GmbH (RIPE NCC) on 2026-03-02 15:27 UTC: it left ARIN for RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}]}}