{"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":"74.221.128.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/74.221.128.0-74.221.143.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2018-12-20)"},"current_holder":{"rir":"ARIN","org":"Palo Alto Networks, Inc","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":16678,"date":"2018-12-20T19:30:47Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Cyclone Systems Inc.","recipient_org":"Palo Alto Networks, Inc","range":"74.221.128.0/20","log":"ARIN"},{"id":15656,"date":"2018-10-29T16:15:20Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Metrobridge Networks USA Corporation","recipient_org":"Cyclone Systems Inc.","range":"74.221.128.0/20","log":"ARIN"}],"events":[{"event_id":"662e479d7b539b07","registry":"ARIN","report_date":"2018-12-20","source":"arin_issued","raw_action":"ADD","raw_line":"Add 74.221.128.0-74.221.143.255","resource_type":"ipv4","resource":"74.221.128.0/20","start":"74.221.128.0","end":"74.221.143.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Cyclone Systems Inc.","recipient_organization":"Palo Alto Networks, Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:22+00:00","page":"https://rirtracker.com/ip/74.221.128.0-74.221.143.255/#e-662e479d7b539b07","report_page":"https://rirtracker.com/arin/reports/2018-12-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.221.128.0-74.221.143.255.json","explanation":"ARIN's transfer log records a transfer from Cyclone Systems Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2018-12-20 19:30 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/2018-December/003662.html","retrieved_at":"2026-10-12T18:40:18+00:00","summary":"ARIN-Issued report for 2018-12-20: \"Add 74.221.128.0-74.221.143.255\""},{"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 2018-12-20 19:30 UTC, Cyclone Systems Inc. (ARIN) to Palo Alto Networks, Inc (ARIN); resources moved: 74.221.128.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181219.gz","retrieved_at":"2026-10-12T21:57:19+00:00","summary":"ARIN delegated statistics 2018-12-19 (produced 2018-12-19T06:00:13+00:00), before the report: allocated (dated 2007-02-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181221.gz","retrieved_at":"2026-10-12T21:57:36+00:00","summary":"ARIN delegated statistics 2018-12-21 (produced 2018-12-21T06:00:12+00:00), after the report: allocated (dated 2018-12-20)"}]},{"event_id":"ee70d146545da575","registry":"ARIN","report_date":"2018-10-29","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"74.221.128.0/20","start":"74.221.128.0","end":"74.221.143.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Metrobridge Networks USA Corporation","recipient_organization":"Cyclone Systems Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:40+00:00","page":"https://rirtracker.com/ip/74.221.128.0-74.221.143.255/#e-ee70d146545da575","report_page":"https://rirtracker.com/arin/reports/2018-10-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.221.128.0-74.221.143.255.json","observed":"Merger/acquisition: Metrobridge Networks USA Corporation (ARIN) to Cyclone Systems Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Metrobridge Networks USA Corporation (ARIN) to Cyclone Systems Inc. (ARIN) on 2018-10-29 16:15 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 2018-10-29 16:15 UTC, Metrobridge Networks USA Corporation (ARIN) to Cyclone Systems Inc. (ARIN); resources moved: 74.221.128.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181028.gz","retrieved_at":"2026-10-12T21:54:49+00:00","summary":"ARIN delegated statistics 2018-10-28 (produced 2018-10-28T05:00:10+00:00), before the report: allocated (dated 2007-02-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181030.gz","retrieved_at":"2026-10-12T21:54:54+00:00","summary":"ARIN delegated statistics 2018-10-30 (produced 2018-10-30T05:00:10+00:00), after the report: allocated (dated 2007-02-06)"}]}],"classification_history":{"662e479d7b539b07":[{"raw_change_id":157734,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:43:08+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Cyclone Systems Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2018-12-20 19:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":157734,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:27+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Cyclone Systems Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2018-12-20 19:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":157734,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:09+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Cyclone Systems Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2018-12-20 19:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":157734,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:22+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Cyclone Systems Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2018-12-20 19:30 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"ee70d146545da575":[{"raw_change_id":556789,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:40+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Metrobridge Networks USA Corporation (ARIN) to Cyclone Systems Inc. (ARIN) on 2018-10-29 16:15 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 2018-12-20)"}}