{"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":"54.224.0.0/12","resource_type":"ipv4","page":"https://rirtracker.com/ip/54.224.0.0-54.239.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2012-03-01)"},"current_holder":{"rir":"ARIN","org":"Amazon Technologies Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":5377,"date":"2012-03-01T18:48:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Merck and Co., Inc.","recipient_org":"Amazon Technologies Inc.","range":"54.224.0.0/12","log":"ARIN"}],"events":[{"event_id":"3a4d5a27394f0094","registry":"ARIN","report_date":"2012-03-01","source":"arin_issued","raw_action":"ADD","raw_line":"Add 54.224.0.0-54.239.255.255","resource_type":"ipv4","resource":"54.224.0.0/12","start":"54.224.0.0","end":"54.239.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Merck and Co., Inc.","recipient_organization":"Amazon Technologies Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:58+00:00","page":"https://rirtracker.com/ip/54.224.0.0-54.239.255.255/#e-3a4d5a27394f0094","report_page":"https://rirtracker.com/arin/reports/2012-03-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/54.224.0.0-54.239.255.255.json","piece_of":{"resource":"54.0.0.0/8","page":"https://rirtracker.com/ip/54.0.0.0-54.255.255.255/"},"explanation":"ARIN's transfer log records a transfer from Merck and Co., Inc. (ARIN) to Amazon Technologies Inc. (ARIN) on 2012-03-01 18:48 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/2012-March/001176.html","retrieved_at":"2026-10-12T18:37:27+00:00","summary":"ARIN-Issued report for 2012-03-01: \"Add 54.224.0.0-54.239.255.255\""},{"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 2012-03-01 18:48 UTC, Merck and Co., Inc. (ARIN) to Amazon Technologies Inc. (ARIN); resources moved: 54.224.0.0/12"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120229.gz","retrieved_at":"2026-10-12T19:32:29+00:00","summary":"ARIN delegated statistics 2012-02-29, before the report: assigned (dated 1992-03-17)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120302.gz","retrieved_at":"2026-10-12T19:32:34+00:00","summary":"ARIN delegated statistics 2012-03-02, after the report: assigned (dated 2012-03-01)"}]}],"classification_history":{"3a4d5a27394f0094":[{"raw_change_id":125661,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:16:28+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Merck and Co., Inc. (ARIN) to Amazon Technologies Inc. (ARIN) on 2012-03-01 18:48 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":125661,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:23+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Merck and Co., Inc. (ARIN) to Amazon Technologies Inc. (ARIN) on 2012-03-01 18:48 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":125661,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:58+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Merck and Co., Inc. (ARIN) to Amazon Technologies Inc. (ARIN) on 2012-03-01 18:48 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":125661,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:58+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Merck and Co., Inc. (ARIN) to Amazon Technologies Inc. (ARIN) on 2012-03-01 18:48 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 2012-03-01)"}}