{"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":"157.52.128.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/157.52.128.0-157.52.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2024-08-14)"},"current_holder":{"rir":"ARIN","org":"Amazon.com, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":36365,"date":"2024-08-14T16:06:53Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"LayerHost","recipient_org":"Amazon.com, Inc.","range":"157.52.128.0/17","log":"ARIN"},{"id":20471,"date":"2020-04-20T21:11:16Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Global Frag Networks","recipient_org":"Global Frag Networks","range":"157.52.128.0/17","log":"ARIN"}],"events":[{"event_id":"fe4c19f51a6a0c2e","registry":"ARIN","report_date":"2024-08-14","source":"arin_issued","raw_action":"ADD","raw_line":"Add 157.52.128.0-157.52.255.255","resource_type":"ipv4","resource":"157.52.128.0/17","start":"157.52.128.0","end":"157.52.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"LayerHost","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":"2026-10-13T23:54:09+00:00","page":"https://rirtracker.com/ip/157.52.128.0-157.52.255.255/#e-fe4c19f51a6a0c2e","report_page":"https://rirtracker.com/arin/reports/2024-08-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.52.128.0-157.52.255.255.json","explanation":"ARIN's transfer log records a transfer from LayerHost (ARIN) to Amazon.com, Inc. (ARIN) on 2024-08-14 16:06 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/2024-August/005723.html","retrieved_at":"2026-10-12T18:42:42+00:00","summary":"ARIN-Issued report for 2024-08-14: \"Add 157.52.128.0-157.52.255.255\""},{"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 2024-08-14 16:06 UTC, LayerHost (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 157.52.128.0/17"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240813.gz","retrieved_at":"2026-10-12T23:44:58+00:00","summary":"ARIN delegated statistics 2024-08-13 (produced 2024-08-13T13:00:52+00:00), before the report: allocated (dated 2015-04-01)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240815.gz","retrieved_at":"2026-10-12T23:45:03+00:00","summary":"ARIN delegated statistics 2024-08-15 (produced 2024-08-15T13:00:50+00:00), after the report: allocated (dated 2024-08-14)"}]},{"event_id":"8be4549e4834b555","registry":"ARIN","report_date":"2020-04-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"157.52.128.0/17","start":"157.52.128.0","end":"157.52.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Global Frag Networks","recipient_organization":"Global Frag Networks","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:49+00:00","page":"https://rirtracker.com/ip/157.52.128.0-157.52.255.255/#e-8be4549e4834b555","report_page":"https://rirtracker.com/arin/reports/2020-04-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.52.128.0-157.52.255.255.json","observed":"Merger/acquisition: Global Frag Networks (ARIN) to Global Frag Networks (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Global Frag Networks (ARIN) to Global Frag Networks (ARIN) on 2020-04-20 21:11 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 2020-04-20 21:11 UTC, Global Frag Networks (ARIN) to Global Frag Networks (ARIN); resources moved: 157.52.128.0/17"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200418.gz","retrieved_at":"2026-10-12T22:22:36+00:00","summary":"ARIN delegated statistics 2020-04-18 (produced 2020-04-18T14:00:13+00:00), before the report: allocated (dated 2015-04-01)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200421.gz","retrieved_at":"2026-10-12T22:22:44+00:00","summary":"ARIN delegated statistics 2020-04-21 (produced 2020-04-21T14:00:13+00:00), after the report: allocated (dated 2015-04-01)"}]},{"event_id":"af39458d1c4aa83b","registry":"ARIN","report_date":"2015-04-01","source":"arin_issued","raw_action":"ADD","raw_line":"Add 157.52.128.0-157.52.255.255","resource_type":"ipv4","resource":"157.52.128.0/17","start":"157.52.128.0","end":"157.52.255.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","page":"https://rirtracker.com/ip/157.52.128.0-157.52.255.255/#e-af39458d1c4aa83b","report_page":"https://rirtracker.com/arin/reports/2015-04-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.52.128.0-157.52.255.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-31 and allocated (dated 2015-04-01) on 2015-04-02. The tracker saw this range released from hold on 2015-02-20 (157.52.0.0-157.53.255.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-April/002303.html","retrieved_at":"2026-10-12T18:38:45+00:00","summary":"ARIN-Issued report for 2015-04-01: \"Add 157.52.128.0-157.52.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150331.gz","retrieved_at":"2026-10-12T20:50:25+00:00","summary":"ARIN delegated statistics 2015-03-31 (produced 2015-03-31T05:05:00+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150402.gz","retrieved_at":"2026-10-12T20:50:29+00:00","summary":"ARIN delegated statistics 2015-04-02 (produced 2015-04-02T05:05:37+00:00), after the report: allocated (dated 2015-04-01)"}]}],"classification_history":{"fe4c19f51a6a0c2e":[{"raw_change_id":188646,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:03:00+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from LayerHost (ARIN) to Amazon.com, Inc. (ARIN) on 2024-08-14 16:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":188646,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:47+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from LayerHost (ARIN) to Amazon.com, Inc. (ARIN) on 2024-08-14 16:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":188646,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:39+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from LayerHost (ARIN) to Amazon.com, Inc. (ARIN) on 2024-08-14 16:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":188646,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:09+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from LayerHost (ARIN) to Amazon.com, Inc. (ARIN) on 2024-08-14 16:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"8be4549e4834b555":[{"raw_change_id":560347,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:49+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Global Frag Networks (ARIN) to Global Frag Networks (ARIN) on 2020-04-20 21:11 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."}],"af39458d1c4aa83b":[{"raw_change_id":136832,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:30:17+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-31 and allocated (dated 2015-04-01) on 2015-04-02. The tracker saw this range released from hold on 2015-02-20 (157.52.0.0-157.53.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136832,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:41+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-31 and allocated (dated 2015-04-01) on 2015-04-02. The tracker saw this range released from hold on 2015-02-20 (157.52.0.0-157.53.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136832,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:18+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-31 and allocated (dated 2015-04-01) on 2015-04-02. The tracker saw this range released from hold on 2015-02-20 (157.52.0.0-157.53.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136832,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-31 and allocated (dated 2015-04-01) on 2015-04-02. The tracker saw this range released from hold on 2015-02-20 (157.52.0.0-157.53.255.255), so it appears to have been issued again from ARIN's pool."}]},"arin_statistics_now":{"status":"allocated (dated 2024-08-14)"}}