{"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":"151.139.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/151.139.0.0-151.139.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2024-12-12)"},"current_holder":{"rir":"ARIN","org":"Amazon.com, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":37978,"date":"2024-12-12T17:34:59Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"StackPath ABC, LLC","recipient_org":"Amazon.com, Inc.","range":"151.139.0.0/16","log":"ARIN"},{"id":36644,"date":"2024-09-06T14:47:27Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"StackPath, LLC.","recipient_org":"StackPath ABC, LLC","range":"151.139.0.0/16","log":"ARIN"},{"id":7293,"date":"2016-07-05T20:30:19Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Track Data Corp","recipient_org":"StackPath, LLC.","range":"151.139.0.0/16","log":"ARIN"}],"events":[{"event_id":"be6932ad4aefb66e","registry":"ARIN","report_date":"2024-12-12","source":"arin_issued","raw_action":"ADD","raw_line":"Add 151.139.0.0-151.139.255.255","resource_type":"ipv4","resource":"151.139.0.0/16","start":"151.139.0.0","end":"151.139.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"StackPath ABC, LLC","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":"2026-10-13T23:54:17+00:00","page":"https://rirtracker.com/ip/151.139.0.0-151.139.255.255/#e-be6932ad4aefb66e","report_page":"https://rirtracker.com/arin/reports/2024-12-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.139.0.0-151.139.255.255.json","explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 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-December/005843.html","retrieved_at":"2026-10-12T18:42:50+00:00","summary":"ARIN-Issued report for 2024-12-12: \"Add 151.139.0.0-151.139.255.255\""},{"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 2024-12-12 17:34 UTC, StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 151.139.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241211.gz","retrieved_at":"2026-10-12T23:51:19+00:00","summary":"ARIN delegated statistics 2024-12-11 (produced 2024-12-11T14:01:07+00:00), before the report: allocated (dated 2016-07-05)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241213.gz","retrieved_at":"2026-10-12T23:51:31+00:00","summary":"ARIN delegated statistics 2024-12-13 (produced 2024-12-13T14:01:05+00:00), after the report: allocated (dated 2024-12-12)"}]},{"event_id":"924ed0b1a65fd82a","registry":"ARIN","report_date":"2024-09-06","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"151.139.0.0/16","start":"151.139.0.0","end":"151.139.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"StackPath, LLC.","recipient_organization":"StackPath ABC, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:16+00:00","page":"https://rirtracker.com/ip/151.139.0.0-151.139.255.255/#e-924ed0b1a65fd82a","report_page":"https://rirtracker.com/arin/reports/2024-09-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.139.0.0-151.139.255.255.json","observed":"Merger/acquisition: StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN) on 2024-09-06 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 2024-09-06 14:47 UTC, StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN); resources moved: 151.139.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240905.gz","retrieved_at":"2026-10-12T23:46:05+00:00","summary":"ARIN delegated statistics 2024-09-05 (produced 2024-09-05T13:00:52+00:00), before the report: allocated (dated 2016-07-05)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240907.gz","retrieved_at":"2026-10-12T23:46:20+00:00","summary":"ARIN delegated statistics 2024-09-07 (produced 2024-09-07T13:00:52+00:00), after the report: allocated (dated 2016-07-05)"}]},{"event_id":"b965a0f0a75bd638","registry":"ARIN","report_date":"2016-07-05","source":"arin_issued","raw_action":"ADD","raw_line":"Add 151.139.0.0-151.139.255.255","resource_type":"ipv4","resource":"151.139.0.0/16","start":"151.139.0.0","end":"151.139.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Track Data Corp","recipient_organization":"StackPath, LLC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:36+00:00","page":"https://rirtracker.com/ip/151.139.0.0-151.139.255.255/#e-b965a0f0a75bd638","report_page":"https://rirtracker.com/arin/reports/2016-07-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.139.0.0-151.139.255.255.json","explanation":"ARIN's transfer log records a transfer from Track Data Corp (ARIN) to StackPath, LLC. (ARIN) on 2016-07-05 20:30 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/2016-July/002763.html","retrieved_at":"2026-10-12T18:39:17+00:00","summary":"ARIN-Issued report for 2016-07-05: \"Add 151.139.0.0-151.139.255.255\""},{"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 2016-07-05 20:30 UTC, Track Data Corp (ARIN) to StackPath, LLC. (ARIN); resources moved: 151.139.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160704.gz","retrieved_at":"2026-10-12T21:12:47+00:00","summary":"ARIN delegated statistics 2016-07-04 (produced 2016-07-04T05:03:55+00:00), before the report: assigned (dated 1991-06-26)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160706.gz","retrieved_at":"2026-10-12T21:12:51+00:00","summary":"ARIN delegated statistics 2016-07-06 (produced 2016-07-06T05:04:11+00:00), after the report: assigned (dated 2016-07-05)"}]}],"classification_history":{"be6932ad4aefb66e":[{"raw_change_id":190966,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:04:21+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":190966,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":190966,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:46+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":190966,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:17+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"924ed0b1a65fd82a":[{"raw_change_id":571643,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:16+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN) on 2024-09-06 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."}],"b965a0f0a75bd638":[{"raw_change_id":145531,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:36+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Track Data Corp (ARIN) to StackPath, LLC. (ARIN) on 2016-07-05 20:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":145531,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:52+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Track Data Corp (ARIN) to StackPath, LLC. (ARIN) on 2016-07-05 20:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":145531,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:30+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Track Data Corp (ARIN) to StackPath, LLC. (ARIN) on 2016-07-05 20:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":145531,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:36+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Track Data Corp (ARIN) to StackPath, LLC. (ARIN) on 2016-07-05 20:30 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 2024-12-12)"}}