{"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":"152.55.156.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/152.55.156.0-152.55.159.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"not listed"},"current_holder":{"rir":"RIPE NCC","org":"The North Atlantic Treaty Organization","how":"the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":42690,"date":"2026-01-27T15:52:13Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"MCNC","recipient_org":"The North Atlantic Treaty Organization","range":"152.55.156.0/22"}],"events":[{"event_id":"f96f56c087c422a3","report_date":"2026-01-27","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"152.55.156.0/22","start":"152.55.156.0","end":"152.55.159.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"MCNC","recipient_organization":"The North Atlantic Treaty Organization","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/152.55.156.0-152.55.159.255/#e-f96f56c087c422a3","evidence_url":"https://rirtracker.com/api/v1/events/f96f56c087c422a3.json","explanation":"ARIN's transfer log records a transfer from MCNC (ARIN) to The North Atlantic Treaty Organization (RIPE NCC) on 2026-01-27 15:52 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-20260128","retrieved_at":"2026-10-09T18:55:41+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 152.55.156.0/22 allocated on 2026-01-27, not listed on 2026-01-28"},{"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 2026-01-27 15:52 UTC, MCNC (ARIN) to The North Atlantic Treaty Organization (RIPE NCC); resources moved: 152.55.156.0/22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260126","retrieved_at":"2026-10-09T18:55:34+00:00","summary":"ARIN delegated statistics 2026-01-26 (produced 2026-01-26T14:00:50+00:00), before the report: allocated (dated 1994-08-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260128","retrieved_at":"2026-10-09T18:55:41+00:00","summary":"ARIN delegated statistics 2026-01-28 (produced 2026-01-28T14:00:46+00:00), after the report: not listed"}]}],"classification_history":{"f96f56c087c422a3":[{"raw_change_id":5877,"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 MCNC (ARIN) to The North Atlantic Treaty Organization (RIPE NCC) on 2026-01-27 15:52 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."}]}}