{"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":"143.246.168.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/143.246.168.0-143.246.175.255/","arin_statistics_now":{"file_date":"2026-10-09","status":"not listed"},"current_holder":{"rir":"RIPE NCC","org":"STAR NETWORK & PROMOTION LTD","how":"the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":44956,"date":"2026-07-30T14:24:27Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"Muskingum University","recipient_org":"STAR NETWORK & PROMOTION LTD","range":"143.246.168.0/21"}],"events":[{"event_id":"a792f6f18a009df4","report_date":"2026-07-30","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"143.246.168.0/21","start":"143.246.168.0","end":"143.246.175.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"Muskingum University","recipient_organization":"STAR NETWORK & PROMOTION LTD","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":"2026-10-09T19:28:31+00:00","page":"https://rirtracker.com/ip/143.246.168.0-143.246.175.255/#e-a792f6f18a009df4","evidence_url":"https://rirtracker.com/api/v1/events/a792f6f18a009df4.json","piece_of":{"resource":"143.246.160.0/19","page":"https://rirtracker.com/ip/143.246.160.0-143.246.191.255/"},"explanation":"ARIN's transfer log records a transfer from Muskingum University (ARIN) to STAR NETWORK & PROMOTION LTD (RIPE NCC) on 2026-07-30 14:24 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-20260731","retrieved_at":"2026-10-09T19:05:22+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 143.246.168.0/21 allocated on 2026-07-30, not listed on 2026-07-31"},{"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 2026-07-30 14:24 UTC, Muskingum University (ARIN) to STAR NETWORK & PROMOTION LTD (RIPE NCC); resources moved: 143.246.168.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260729","retrieved_at":"2026-10-09T19:05:16+00:00","summary":"ARIN delegated statistics 2026-07-29 (produced 2026-07-29T13:00:20+00:00), before the report: allocated (dated 1990-10-26)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260731","retrieved_at":"2026-10-09T19:05:22+00:00","summary":"ARIN delegated statistics 2026-07-31 (produced 2026-07-31T13:00:21+00:00), after the report: not listed"}]}],"classification_history":{"a792f6f18a009df4":[{"raw_change_id":7191,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.0.0","classified_at":"2026-10-09T19:28:31+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Muskingum University (ARIN) to STAR NETWORK & PROMOTION LTD (RIPE NCC) on 2026-07-30 14:24 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."}]}}