{"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":"216.221.160.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.221.160.0-216.221.191.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2023-04-14)"},"current_holder":{"rir":"ARIN","org":"Amazon Web Services, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":33881,"date":"2023-12-13T14:47:18Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Amazon.com, Inc.","recipient_org":"Amazon Web Services, Inc.","range":"216.221.160.0/19","log":"ARIN"},{"id":31266,"date":"2023-04-14T15:01:54Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"CoreSpace, Inc.","recipient_org":"Amazon.com, Inc.","range":"216.221.160.0/19","log":"ARIN"}],"events":[{"event_id":"ded820b1f1448a16","registry":"ARIN","report_date":"2023-12-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.221.160.0/19","start":"216.221.160.0","end":"216.221.191.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Amazon.com, Inc.","recipient_organization":"Amazon Web Services, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:12+00:00","page":"https://rirtracker.com/ip/216.221.160.0-216.221.191.255/#e-ded820b1f1448a16","report_page":"https://rirtracker.com/arin/reports/2023-12-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.160.0-216.221.191.255.json","observed":"Merger/acquisition: Amazon.com, Inc. (ARIN) to Amazon Web Services, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Amazon.com, Inc. (ARIN) to Amazon Web Services, Inc. (ARIN) on 2023-12-13 14:47 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 2023-12-13 14:47 UTC, Amazon.com, Inc. (ARIN) to Amazon Web Services, Inc. (ARIN); resources moved: 216.221.160.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231212.gz","retrieved_at":"2026-10-12T23:31:44+00:00","summary":"ARIN delegated statistics 2023-12-12 (produced 2023-12-12T14:00:33+00:00), before the report: allocated (dated 2023-04-14)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231214.gz","retrieved_at":"2026-10-12T23:31:49+00:00","summary":"ARIN delegated statistics 2023-12-14 (produced 2023-12-14T14:00:33+00:00), after the report: allocated (dated 2023-04-14)"}]},{"event_id":"c044ca5efc20c2f9","registry":"ARIN","report_date":"2023-04-14","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.221.160.0-216.221.191.255","resource_type":"ipv4","resource":"216.221.160.0/19","start":"216.221.160.0","end":"216.221.191.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"CoreSpace, Inc.","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":"2026-10-13T23:53:40+00:00","page":"https://rirtracker.com/ip/216.221.160.0-216.221.191.255/#e-c044ca5efc20c2f9","report_page":"https://rirtracker.com/arin/reports/2023-04-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.160.0-216.221.191.255.json","explanation":"ARIN's transfer log records a transfer from CoreSpace, Inc. (ARIN) to Amazon.com, Inc. (ARIN) on 2023-04-14 15:01 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-April/005236.html","retrieved_at":"2026-10-12T18:42:08+00:00","summary":"ARIN-Issued report for 2023-04-14: \"Add 216.221.160.0-216.221.191.255\""},{"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 2023-04-14 15:01 UTC, CoreSpace, Inc. (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 216.221.160.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230413.gz","retrieved_at":"2026-10-12T23:18:56+00:00","summary":"ARIN delegated statistics 2023-04-13 (produced 2023-04-13T13:00:10+00:00), before the report: allocated (dated 1999-05-14)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230415.gz","retrieved_at":"2026-10-12T23:19:01+00:00","summary":"ARIN delegated statistics 2023-04-15 (produced 2023-04-15T13:00:11+00:00), after the report: allocated (dated 2023-04-14)"}]}],"classification_history":{"ded820b1f1448a16":[{"raw_change_id":569752,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:12+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Amazon.com, Inc. (ARIN) to Amazon Web Services, Inc. (ARIN) on 2023-12-13 14:47 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."}],"c044ca5efc20c2f9":[{"raw_change_id":181251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:58:55+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CoreSpace, Inc. (ARIN) to Amazon.com, Inc. (ARIN) on 2023-04-14 15:01 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":181251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:26+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CoreSpace, Inc. (ARIN) to Amazon.com, Inc. (ARIN) on 2023-04-14 15:01 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":181251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:16+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CoreSpace, Inc. (ARIN) to Amazon.com, Inc. (ARIN) on 2023-04-14 15:01 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":181251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:40+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from CoreSpace, Inc. (ARIN) to Amazon.com, Inc. (ARIN) on 2023-04-14 15:01 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 2023-04-14)"}}