{"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":"204.228.192.0/18","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.228.192.0-204.228.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2025-07-24)"},"current_holder":{"rir":"ARIN","org":"ARK Data Centers LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":40994,"date":"2025-07-24T18:03:37Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"University of Idaho","recipient_org":"ARK Data Centers LLC","range":"204.228.192.0/18","log":"ARIN"},{"id":15650,"date":"2018-10-29T14:21:07Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"WestNet, Inc.","recipient_org":"University of Idaho","range":"204.228.192.0/18","log":"ARIN"}],"events":[{"event_id":"33d63800920dfd4b","registry":"ARIN","report_date":"2025-07-24","source":"arin_issued","raw_action":"ADD","raw_line":"Add 204.228.192.0-204.228.255.255","resource_type":"ipv4","resource":"204.228.192.0/18","start":"204.228.192.0","end":"204.228.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"University of Idaho","recipient_organization":"ARK Data Centers LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:32+00:00","page":"https://rirtracker.com/ip/204.228.192.0-204.228.255.255/#e-33d63800920dfd4b","report_page":"https://rirtracker.com/arin/reports/2025-07-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.228.192.0-204.228.255.255.json","explanation":"ARIN's transfer log records a transfer from University of Idaho (ARIN) to ARK Data Centers LLC (ARIN) on 2025-07-24 18:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2025-July/006067.html","retrieved_at":"2026-10-12T18:43:05+00:00","summary":"ARIN-Issued report for 2025-07-24: \"Add 204.228.192.0-204.228.255.255\""},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2025-07-24 18:03 UTC, University of Idaho (ARIN) to ARK Data Centers LLC (ARIN); resources moved: 204.228.192.0/18"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250723.gz","retrieved_at":"2026-10-13T00:03:44+00:00","summary":"ARIN delegated statistics 2025-07-23 (produced 2025-07-23T13:01:13+00:00), before the report: allocated (dated 1995-01-12)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250725.gz","retrieved_at":"2026-10-13T00:03:59+00:00","summary":"ARIN delegated statistics 2025-07-25 (produced 2025-07-25T13:01:13+00:00), after the report: allocated (dated 2025-07-24)"}]},{"event_id":"81461db83f6a55ec","registry":"ARIN","report_date":"2018-10-29","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"204.228.192.0/18","start":"204.228.192.0","end":"204.228.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"WestNet, Inc.","recipient_organization":"University of Idaho","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:40+00:00","page":"https://rirtracker.com/ip/204.228.192.0-204.228.255.255/#e-81461db83f6a55ec","report_page":"https://rirtracker.com/arin/reports/2018-10-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.228.192.0-204.228.255.255.json","observed":"Merger/acquisition: WestNet, Inc. (ARIN) to University of Idaho (ARIN)","piece_of":{"resource":"204.228.0.0/15","page":"https://rirtracker.com/ip/204.228.0.0-204.229.255.255/"},"explanation":"ARIN's transfer log records a merger, acquisition or reorganization from WestNet, Inc. (ARIN) to University of Idaho (ARIN) on 2018-10-29 14:21 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2018-10-29 14:21 UTC, WestNet, Inc. (ARIN) to University of Idaho (ARIN); resources moved: 204.228.192.0/18"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181028.gz","retrieved_at":"2026-10-12T21:54:49+00:00","summary":"ARIN delegated statistics 2018-10-28 (produced 2018-10-28T05:00:10+00:00), before the report: allocated (dated 1995-01-12)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181030.gz","retrieved_at":"2026-10-12T21:54:54+00:00","summary":"ARIN delegated statistics 2018-10-30 (produced 2018-10-30T05:00:10+00:00), after the report: allocated (dated 1995-01-12)"}]}],"classification_history":{"33d63800920dfd4b":[{"raw_change_id":195220,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:07:20+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from University of Idaho (ARIN) to ARK Data Centers LLC (ARIN) on 2025-07-24 18:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":195220,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:04+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from University of Idaho (ARIN) to ARK Data Centers LLC (ARIN) on 2025-07-24 18:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":195220,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:58+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from University of Idaho (ARIN) to ARK Data Centers LLC (ARIN) on 2025-07-24 18:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":195220,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:32+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from University of Idaho (ARIN) to ARK Data Centers LLC (ARIN) on 2025-07-24 18:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"81461db83f6a55ec":[{"raw_change_id":556782,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:40+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from WestNet, Inc. (ARIN) to University of Idaho (ARIN) on 2018-10-29 14:21 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}]},"arin_statistics_now":{"status":"allocated (dated 2025-07-24)"}}