{"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":"208.103.172.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/208.103.172.0-208.103.172.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2017-11-16)"},"current_holder":{"rir":"ARIN","org":"MARSHALL WACE NORTH AMERICA L.P.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":11383,"date":"2017-11-16T14:22:15Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Coretel America, Inc.","recipient_org":"MARSHALL WACE NORTH AMERICA L.P.","range":"208.103.172.0/24","log":"ARIN"}],"events":[{"event_id":"3bfae308f24b21f9","registry":"ARIN","report_date":"2017-11-16","source":"arin_issued","raw_action":"ADD","raw_line":"Add 208.103.172.0-208.103.172.255","resource_type":"ipv4","resource":"208.103.172.0/24","start":"208.103.172.0","end":"208.103.172.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Coretel America, Inc.","recipient_organization":"MARSHALL WACE NORTH AMERICA L.P.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:00+00:00","page":"https://rirtracker.com/ip/208.103.172.0-208.103.172.255/#e-3bfae308f24b21f9","report_page":"https://rirtracker.com/arin/reports/2017-11-16/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/208.103.172.0-208.103.172.255.json","piece_of":{"resource":"208.103.128.0/18","page":"https://rirtracker.com/ip/208.103.128.0-208.103.191.255/"},"explanation":"ARIN's transfer log records a transfer from Coretel America, Inc. (ARIN) to MARSHALL WACE NORTH AMERICA L.P. (ARIN) on 2017-11-16 14:22 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/2017-November/003263.html","retrieved_at":"2026-10-12T18:39:51+00:00","summary":"ARIN-Issued report for 2017-11-16: \"Add 208.103.172.0-208.103.172.255\""},{"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 2017-11-16 14:22 UTC, Coretel America, Inc. (ARIN) to MARSHALL WACE NORTH AMERICA L.P. (ARIN); resources moved: 208.103.172.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171115.gz","retrieved_at":"2026-10-12T21:37:24+00:00","summary":"ARIN delegated statistics 2017-11-15 (produced 2017-11-15T06:11:34+00:00), before the report: allocated (dated 2006-03-27)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171117.gz","retrieved_at":"2026-10-12T21:37:28+00:00","summary":"ARIN delegated statistics 2017-11-17 (produced 2017-11-17T06:11:07+00:00), after the report: assigned (dated 2017-11-16)"}]}],"classification_history":{"3bfae308f24b21f9":[{"raw_change_id":152141,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:39:37+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Coretel America, Inc. (ARIN) to MARSHALL WACE NORTH AMERICA L.P. (ARIN) on 2017-11-16 14:22 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":152141,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:10+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Coretel America, Inc. (ARIN) to MARSHALL WACE NORTH AMERICA L.P. (ARIN) on 2017-11-16 14:22 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":152141,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:51+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Coretel America, Inc. (ARIN) to MARSHALL WACE NORTH AMERICA L.P. (ARIN) on 2017-11-16 14:22 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":152141,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:00+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Coretel America, Inc. (ARIN) to MARSHALL WACE NORTH AMERICA L.P. (ARIN) on 2017-11-16 14:22 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 2017-11-16)"}}