{"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":"198.151.143.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/198.151.143.0-198.151.143.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2022-01-31)"},"current_holder":{"rir":"ARIN","org":"Des Moines Orthopaedic Surgeons, P.C.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":26835,"date":"2022-01-31T20:50:55Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Navisite Opco LLC","recipient_org":"Des Moines Orthopaedic Surgeons, P.C.","range":"198.151.143.0/24","log":"ARIN"},{"id":24495,"date":"2021-04-28T13:26:50Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ClearBlue Technologies","recipient_org":"Navisite Opco LLC","range":"198.151.143.0/24","log":"ARIN"}],"events":[{"event_id":"59a06e301af67ebd","registry":"ARIN","report_date":"2022-01-31","source":"arin_issued","raw_action":"ADD","raw_line":"Add 198.151.143.0-198.151.143.255","resource_type":"ipv4","resource":"198.151.143.0/24","start":"198.151.143.0","end":"198.151.143.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Navisite Opco LLC","recipient_organization":"Des Moines Orthopaedic Surgeons, P.C.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:19+00:00","page":"https://rirtracker.com/ip/198.151.143.0-198.151.143.255/#e-59a06e301af67ebd","report_page":"https://rirtracker.com/arin/reports/2022-01-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.151.143.0-198.151.143.255.json","explanation":"ARIN's transfer log records a transfer from Navisite Opco LLC (ARIN) to Des Moines Orthopaedic Surgeons, P.C. (ARIN) on 2022-01-31 20:50 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/2022-January/004798.html","retrieved_at":"2026-10-12T18:41:36+00:00","summary":"ARIN-Issued report for 2022-01-31: \"Add 198.151.143.0-198.151.143.255\""},{"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 2022-01-31 20:50 UTC, Navisite Opco LLC (ARIN) to Des Moines Orthopaedic Surgeons, P.C. (ARIN); resources moved: 198.151.143.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220130.gz","retrieved_at":"2026-10-12T22:56:14+00:00","summary":"ARIN delegated statistics 2022-01-30 (produced 2022-01-30T14:00:10+00:00), before the report: allocated (dated 1993-06-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220201.gz","retrieved_at":"2026-10-12T22:56:18+00:00","summary":"ARIN delegated statistics 2022-02-01 (produced 2022-02-01T14:00:11+00:00), after the report: allocated (dated 2022-01-31)"}]},{"event_id":"760a6c86f202f54a","registry":"ARIN","report_date":"2021-04-28","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"198.151.143.0/24","start":"198.151.143.0","end":"198.151.143.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"ClearBlue Technologies","recipient_organization":"Navisite Opco LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:56+00:00","page":"https://rirtracker.com/ip/198.151.143.0-198.151.143.255/#e-760a6c86f202f54a","report_page":"https://rirtracker.com/arin/reports/2021-04-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.151.143.0-198.151.143.255.json","observed":"Merger/acquisition: ClearBlue Technologies (ARIN) to Navisite Opco LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from ClearBlue Technologies (ARIN) to Navisite Opco LLC (ARIN) on 2021-04-28 13:26 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 2021-04-28 13:26 UTC, ClearBlue Technologies (ARIN) to Navisite Opco LLC (ARIN); resources moved: 198.151.143.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210427.gz","retrieved_at":"2026-10-12T22:41:53+00:00","summary":"ARIN delegated statistics 2021-04-27 (produced 2021-04-27T14:00:13+00:00), before the report: allocated (dated 1993-06-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210429.gz","retrieved_at":"2026-10-12T22:41:58+00:00","summary":"ARIN delegated statistics 2021-04-29 (produced 2021-04-29T14:00:13+00:00), after the report: allocated (dated 1993-06-18)"}]}],"classification_history":{"59a06e301af67ebd":[{"raw_change_id":175175,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:55:06+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Navisite Opco LLC (ARIN) to Des Moines Orthopaedic Surgeons, P.C. (ARIN) on 2022-01-31 20:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":175175,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:10+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Navisite Opco LLC (ARIN) to Des Moines Orthopaedic Surgeons, P.C. (ARIN) on 2022-01-31 20:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":175175,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:58+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Navisite Opco LLC (ARIN) to Des Moines Orthopaedic Surgeons, P.C. (ARIN) on 2022-01-31 20:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":175175,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:19+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Navisite Opco LLC (ARIN) to Des Moines Orthopaedic Surgeons, P.C. (ARIN) on 2022-01-31 20:50 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"760a6c86f202f54a":[{"raw_change_id":563219,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:56+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from ClearBlue Technologies (ARIN) to Navisite Opco LLC (ARIN) on 2021-04-28 13:26 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 2022-01-31)"}}