{"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":"151.101.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/151.101.0.0-151.101.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2016-02-01)"},"current_holder":{"rir":"ARIN","org":"Fastly","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":6411,"date":"2016-02-01T20:18:41Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"QPC Inc","recipient_org":"Fastly","range":"151.101.0.0/16","log":"ARIN"},{"id":6362,"date":"2016-01-13T18:45:24Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Perimeter Technology Inc.","recipient_org":"QPC Inc","range":"151.101.0.0/16","log":"ARIN"}],"events":[{"event_id":"ef9f4a6744ecdecf","registry":"ARIN","report_date":"2016-02-01","source":"arin_issued","raw_action":"ADD","raw_line":"Add 151.101.0.0-151.101.255.255","resource_type":"ipv4","resource":"151.101.0.0/16","start":"151.101.0.0","end":"151.101.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"QPC Inc","recipient_organization":"Fastly","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:32+00:00","page":"https://rirtracker.com/ip/151.101.0.0-151.101.255.255/#e-ef9f4a6744ecdecf","report_page":"https://rirtracker.com/arin/reports/2016-02-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.101.0.0-151.101.255.255.json","explanation":"ARIN's transfer log records a transfer from QPC Inc (ARIN) to Fastly (ARIN) on 2016-02-01 20:18 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-February/002608.html","retrieved_at":"2026-10-12T18:39:06+00:00","summary":"ARIN-Issued report for 2016-02-01: \"Add 151.101.0.0-151.101.255.255\""},{"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 2016-02-01 20:18 UTC, QPC Inc (ARIN) to Fastly (ARIN); resources moved: 151.101.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160131.gz","retrieved_at":"2026-10-12T21:05:21+00:00","summary":"ARIN delegated statistics 2016-01-31 (produced 2016-01-31T06:03:44+00:00), before the report: assigned (dated 1991-05-23)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160202.gz","retrieved_at":"2026-10-12T21:05:26+00:00","summary":"ARIN delegated statistics 2016-02-02 (produced 2016-02-02T06:04:07+00:00), after the report: assigned (dated 2016-02-01)"}]},{"event_id":"616fb918f88a8bbf","registry":"ARIN","report_date":"2016-01-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"151.101.0.0/16","start":"151.101.0.0","end":"151.101.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Perimeter Technology Inc.","recipient_organization":"QPC Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:24+00:00","page":"https://rirtracker.com/ip/151.101.0.0-151.101.255.255/#e-616fb918f88a8bbf","report_page":"https://rirtracker.com/arin/reports/2016-01-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.101.0.0-151.101.255.255.json","observed":"Merger/acquisition: Perimeter Technology Inc. (ARIN) to QPC Inc (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Perimeter Technology Inc. (ARIN) to QPC Inc (ARIN) on 2016-01-13 18:45 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 2016-01-13 18:45 UTC, Perimeter Technology Inc. (ARIN) to QPC Inc (ARIN); resources moved: 151.101.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160112.gz","retrieved_at":"2026-10-12T21:04:27+00:00","summary":"ARIN delegated statistics 2016-01-12 (produced 2016-01-12T06:04:58+00:00), before the report: assigned (dated 1991-05-23)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160114.gz","retrieved_at":"2026-10-12T21:04:33+00:00","summary":"ARIN delegated statistics 2016-01-14 (produced 2016-01-14T06:04:36+00:00), after the report: assigned (dated 1991-05-23)"}]}],"classification_history":{"ef9f4a6744ecdecf":[{"raw_change_id":140749,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:34:45+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from QPC Inc (ARIN) to Fastly (ARIN) on 2016-02-01 20:18 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":140749,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:49+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from QPC Inc (ARIN) to Fastly (ARIN) on 2016-02-01 20:18 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":140749,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:26+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from QPC Inc (ARIN) to Fastly (ARIN) on 2016-02-01 20:18 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":140749,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:32+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from QPC Inc (ARIN) to Fastly (ARIN) on 2016-02-01 20:18 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"616fb918f88a8bbf":[{"raw_change_id":549800,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:24+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Perimeter Technology Inc. (ARIN) to QPC Inc (ARIN) on 2016-01-13 18:45 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 2016-02-01)"}}