{"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":"64.201.224.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/64.201.224.0-64.201.231.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2016-09-06)"},"current_holder":{"rir":"ARIN","org":"Surescripts, LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":35248,"date":"2024-04-12T18:05:17Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"SURESCRIPTS, LLC","recipient_org":"Surescripts, LLC","range":"64.201.224.0/21","log":"ARIN"},{"id":7766,"date":"2016-09-06T17:19:51Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Advanza Systems Inc.","recipient_org":"SURESCRIPTS, LLC","range":"64.201.224.0/21","log":"ARIN"}],"events":[{"event_id":"77f6361e3617f2d6","registry":"ARIN","report_date":"2024-04-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"64.201.224.0/21","start":"64.201.224.0","end":"64.201.231.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"SURESCRIPTS, LLC","recipient_organization":"Surescripts, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:14+00:00","page":"https://rirtracker.com/ip/64.201.224.0-64.201.231.255/#e-77f6361e3617f2d6","report_page":"https://rirtracker.com/arin/reports/2024-04-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/64.201.224.0-64.201.231.255.json","observed":"Merger/acquisition: SURESCRIPTS, LLC (ARIN) to Surescripts, LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from SURESCRIPTS, LLC (ARIN) to Surescripts, LLC (ARIN) on 2024-04-12 18:05 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 2024-04-12 18:05 UTC, SURESCRIPTS, LLC (ARIN) to Surescripts, LLC (ARIN); resources moved: 64.201.224.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240411.gz","retrieved_at":"2026-10-12T23:38:16+00:00","summary":"ARIN delegated statistics 2024-04-11 (produced 2024-04-11T13:00:50+00:00), before the report: allocated (dated 2016-09-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240413.gz","retrieved_at":"2026-10-12T23:38:21+00:00","summary":"ARIN delegated statistics 2024-04-13 (produced 2024-04-13T13:00:48+00:00), after the report: allocated (dated 2016-09-06)"}]},{"event_id":"d96bae7562e8758d","registry":"ARIN","report_date":"2016-09-06","source":"arin_issued","raw_action":"ADD","raw_line":"Add 64.201.224.0-64.201.231.255","resource_type":"ipv4","resource":"64.201.224.0/21","start":"64.201.224.0","end":"64.201.231.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Advanza Systems Inc.","recipient_organization":"SURESCRIPTS, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:38+00:00","page":"https://rirtracker.com/ip/64.201.224.0-64.201.231.255/#e-d96bae7562e8758d","report_page":"https://rirtracker.com/arin/reports/2016-09-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/64.201.224.0-64.201.231.255.json","explanation":"ARIN's transfer log records a transfer from Advanza Systems Inc. (ARIN) to SURESCRIPTS, LLC (ARIN) on 2016-09-06 17:19 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/2016-September/002826.html","retrieved_at":"2026-10-12T18:39:21+00:00","summary":"ARIN-Issued report for 2016-09-06: \"Add 64.201.224.0-64.201.231.255\""},{"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 2016-09-06 17:19 UTC, Advanza Systems Inc. (ARIN) to SURESCRIPTS, LLC (ARIN); resources moved: 64.201.224.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160905.gz","retrieved_at":"2026-10-12T21:15:53+00:00","summary":"ARIN delegated statistics 2016-09-05 (produced 2016-09-05T05:09:48+00:00), before the report: allocated (dated 2002-10-15)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160907.gz","retrieved_at":"2026-10-12T21:15:58+00:00","summary":"ARIN delegated statistics 2016-09-07 (produced 2016-09-07T05:09:28+00:00), after the report: assigned (dated 2016-09-06)"}]}],"classification_history":{"77f6361e3617f2d6":[{"raw_change_id":570675,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:14+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from SURESCRIPTS, LLC (ARIN) to Surescripts, LLC (ARIN) on 2024-04-12 18:05 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."}],"d96bae7562e8758d":[{"raw_change_id":146128,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:58+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Advanza Systems Inc. (ARIN) to SURESCRIPTS, LLC (ARIN) on 2016-09-06 17:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146128,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Advanza Systems Inc. (ARIN) to SURESCRIPTS, LLC (ARIN) on 2016-09-06 17:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146128,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:32+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Advanza Systems Inc. (ARIN) to SURESCRIPTS, LLC (ARIN) on 2016-09-06 17:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146128,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:38+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Advanza Systems Inc. (ARIN) to SURESCRIPTS, LLC (ARIN) on 2016-09-06 17:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2016-09-06)"}}