{"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":"52.128.32.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/52.128.32.0-52.128.32.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2017-12-07)"},"current_holder":{"rir":"ARIN","org":"Vertex Research Group, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":44586,"date":"2026-07-07T20:52:09Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Vertex Research Group, Inc.","recipient_org":"Vertex Research Group, Inc.","range":"52.128.32.0/24","log":"ARIN"},{"id":11579,"date":"2017-12-07T20:09:59Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"E.I. du Pont de Nemours and Co., Inc.","recipient_org":"Vertex Research Group, Inc.","range":"52.128.32.0/24","log":"ARIN"}],"events":[{"event_id":"be88a8891083c83a","registry":"ARIN","report_date":"2026-07-07","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"52.128.32.0/24","start":"52.128.32.0","end":"52.128.32.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Vertex Research Group, Inc.","recipient_organization":"Vertex Research Group, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:29+00:00","page":"https://rirtracker.com/ip/52.128.32.0-52.128.32.255/#e-be88a8891083c83a","report_page":"https://rirtracker.com/arin/reports/2026-07-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.128.32.0-52.128.32.255.json","observed":"Merger/acquisition: Vertex Research Group, Inc. (ARIN) to Vertex Research Group, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Vertex Research Group, Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2026-07-07 20:52 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 2026-07-07 20:52 UTC, Vertex Research Group, Inc. (ARIN) to Vertex Research Group, Inc. (ARIN); resources moved: 52.128.32.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260706","retrieved_at":"2026-10-09T19:04:00+00:00","summary":"ARIN delegated statistics 2026-07-06 (produced 2026-07-06T09:00:22+00:00), before the report: allocated (dated 2017-12-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260708","retrieved_at":"2026-10-09T19:04:07+00:00","summary":"ARIN delegated statistics 2026-07-08 (produced 2026-07-08T09:00:21+00:00), after the report: allocated (dated 2017-12-07)"}]},{"event_id":"af5876fbf540279b","registry":"ARIN","report_date":"2017-12-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 52.128.32.0-52.128.32.255","resource_type":"ipv4","resource":"52.128.32.0/24","start":"52.128.32.0","end":"52.128.32.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"E.I. du Pont de Nemours and Co., Inc.","recipient_organization":"Vertex Research Group, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:01+00:00","page":"https://rirtracker.com/ip/52.128.32.0-52.128.32.255/#e-af5876fbf540279b","report_page":"https://rirtracker.com/arin/reports/2017-12-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.128.32.0-52.128.32.255.json","explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2017-12-07 20:09 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-December/003284.html","retrieved_at":"2026-10-12T18:39:53+00:00","summary":"ARIN-Issued report for 2017-12-07: \"Add 52.128.32.0-52.128.32.255\""},{"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 2017-12-07 20:09 UTC, E.I. du Pont de Nemours and Co., Inc. (ARIN) to Vertex Research Group, Inc. (ARIN); resources moved: 52.128.32.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171206.gz","retrieved_at":"2026-10-12T21:38:20+00:00","summary":"ARIN delegated statistics 2017-12-06 (produced 2017-12-06T06:09:09+00:00), before the report: assigned (dated 1991-12-19)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171208.gz","retrieved_at":"2026-10-12T21:38:29+00:00","summary":"ARIN delegated statistics 2017-12-08 (produced 2017-12-08T06:08:53+00:00), after the report: assigned (dated 2017-12-07)"}]}],"classification_history":{"be88a8891083c83a":[{"raw_change_id":576508,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:29+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Vertex Research Group, Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2026-07-07 20:52 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."}],"af5876fbf540279b":[{"raw_change_id":152372,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:39:48+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2017-12-07 20:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":152372,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:11+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2017-12-07 20:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":152372,"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 E.I. du Pont de Nemours and Co., Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2017-12-07 20:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":152372,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:01+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Vertex Research Group, Inc. (ARIN) on 2017-12-07 20:09 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 2017-12-07)"}}