{"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":"138.52.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/138.52.0.0-138.52.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2023-06-29)"},"current_holder":{"rir":"ARIN","org":"Amazon.com, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":32369,"date":"2023-06-29T21:08:18Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Micro Focus","recipient_org":"Amazon.com, Inc.","range":"138.52.0.0/16","log":"ARIN"},{"id":15549,"date":"2018-10-15T17:56:07Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Liant Software Coproration","recipient_org":"Micro Focus","range":"138.52.0.0/16","log":"ARIN"}],"events":[{"event_id":"654e3f4bf6d2ae71","registry":"ARIN","report_date":"2023-06-29","source":"arin_issued","raw_action":"ADD","raw_line":"Add 138.52.0.0-138.52.255.255","resource_type":"ipv4","resource":"138.52.0.0/16","start":"138.52.0.0","end":"138.52.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Micro Focus","recipient_organization":"Amazon.com, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:45+00:00","page":"https://rirtracker.com/ip/138.52.0.0-138.52.255.255/#e-654e3f4bf6d2ae71","report_page":"https://rirtracker.com/arin/reports/2023-06-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/138.52.0.0-138.52.255.255.json","explanation":"ARIN's transfer log records a transfer from Micro Focus (ARIN) to Amazon.com, Inc. (ARIN) on 2023-06-29 21:08 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/2023-June/005312.html","retrieved_at":"2026-10-12T18:42:12+00:00","summary":"ARIN-Issued report for 2023-06-29: \"Add 138.52.0.0-138.52.255.255\""},{"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 2023-06-29 21:08 UTC, Micro Focus (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 138.52.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230628.gz","retrieved_at":"2026-10-12T23:22:59+00:00","summary":"ARIN delegated statistics 2023-06-28 (produced 2023-06-28T13:00:11+00:00), before the report: allocated (dated 1990-02-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230630.gz","retrieved_at":"2026-10-12T23:23:14+00:00","summary":"ARIN delegated statistics 2023-06-30 (produced 2023-06-30T13:00:11+00:00), after the report: allocated (dated 2023-06-29)"}]},{"event_id":"5c34d144ad12c53e","registry":"ARIN","report_date":"2018-10-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"138.52.0.0/16","start":"138.52.0.0","end":"138.52.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Liant Software Coproration","recipient_organization":"Micro Focus","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/138.52.0.0-138.52.255.255/#e-5c34d144ad12c53e","report_page":"https://rirtracker.com/arin/reports/2018-10-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/138.52.0.0-138.52.255.255.json","observed":"Merger/acquisition: Liant Software Coproration (ARIN) to Micro Focus (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Liant Software Coproration (ARIN) to Micro Focus (ARIN) on 2018-10-15 17:56 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 2018-10-15 17:56 UTC, Liant Software Coproration (ARIN) to Micro Focus (ARIN); resources moved: 138.52.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181014.gz","retrieved_at":"2026-10-12T21:54:05+00:00","summary":"ARIN delegated statistics 2018-10-14 (produced 2018-10-14T05:00:17+00:00), before the report: assigned (dated 1990-02-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181016.gz","retrieved_at":"2026-10-12T21:54:10+00:00","summary":"ARIN delegated statistics 2018-10-16 (produced 2018-10-16T05:00:15+00:00), after the report: assigned (dated 1990-02-06)"}]}],"classification_history":{"654e3f4bf6d2ae71":[{"raw_change_id":182293,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:59:25+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Micro Focus (ARIN) to Amazon.com, Inc. (ARIN) on 2023-06-29 21:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":182293,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:29+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Micro Focus (ARIN) to Amazon.com, Inc. (ARIN) on 2023-06-29 21:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":182293,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:19+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Micro Focus (ARIN) to Amazon.com, Inc. (ARIN) on 2023-06-29 21:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":182293,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:45+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Micro Focus (ARIN) to Amazon.com, Inc. (ARIN) on 2023-06-29 21:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"5c34d144ad12c53e":[{"raw_change_id":556721,"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 Liant Software Coproration (ARIN) to Micro Focus (ARIN) on 2018-10-15 17:56 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 2023-06-29)"}}