{"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":"134.238.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/134.238.0.0-134.238.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2021-02-03)"},"current_holder":{"rir":"ARIN","org":"Palo Alto Networks, Inc","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":22778,"date":"2021-02-03T22:52:11Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Tenneco Inc.","recipient_org":"Palo Alto Networks, Inc","range":"134.238.0.0/16","log":"ARIN"},{"id":22235,"date":"2020-12-09T21:46:03Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Federal-Mogul Corporation","recipient_org":"Tenneco Inc.","range":"134.238.0.0/16","log":"ARIN"}],"events":[{"event_id":"312a7889f93f87f1","registry":"ARIN","report_date":"2021-02-03","source":"arin_issued","raw_action":"ADD","raw_line":"Add 134.238.0.0-134.238.255.255","resource_type":"ipv4","resource":"134.238.0.0/16","start":"134.238.0.0","end":"134.238.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Tenneco 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":"2026-10-13T23:53:04+00:00","page":"https://rirtracker.com/ip/134.238.0.0-134.238.255.255/#e-312a7889f93f87f1","report_page":"https://rirtracker.com/arin/reports/2021-02-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/134.238.0.0-134.238.255.255.json","explanation":"ARIN's transfer log records a transfer from Tenneco Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2021-02-03 22:52 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/2021-February/004436.html","retrieved_at":"2026-10-12T18:41:13+00:00","summary":"ARIN-Issued report for 2021-02-03: \"Add 134.238.0.0-134.238.255.255\""},{"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 2021-02-03 22:52 UTC, Tenneco Inc. (ARIN) to Palo Alto Networks, Inc (ARIN); resources moved: 134.238.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210202.gz","retrieved_at":"2026-10-12T22:37:39+00:00","summary":"ARIN delegated statistics 2021-02-02 (produced 2021-02-02T15:00:13+00:00), before the report: assigned (dated 1989-08-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210204.gz","retrieved_at":"2026-10-12T22:37:44+00:00","summary":"ARIN delegated statistics 2021-02-04 (produced 2021-02-04T15:00:14+00:00), after the report: allocated (dated 2021-02-03)"}]},{"event_id":"5f6c43a6e5d7a08a","registry":"ARIN","report_date":"2020-12-09","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"134.238.0.0/16","start":"134.238.0.0","end":"134.238.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Federal-Mogul Corporation","recipient_organization":"Tenneco Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:52+00:00","page":"https://rirtracker.com/ip/134.238.0.0-134.238.255.255/#e-5f6c43a6e5d7a08a","report_page":"https://rirtracker.com/arin/reports/2020-12-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/134.238.0.0-134.238.255.255.json","observed":"Merger/acquisition: Federal-Mogul Corporation (ARIN) to Tenneco Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Federal-Mogul Corporation (ARIN) to Tenneco Inc. (ARIN) on 2020-12-09 21:46 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 2020-12-09 21:46 UTC, Federal-Mogul Corporation (ARIN) to Tenneco Inc. (ARIN); resources moved: 134.238.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201208.gz","retrieved_at":"2026-10-12T22:34:44+00:00","summary":"ARIN delegated statistics 2020-12-08 (produced 2020-12-08T15:00:13+00:00), before the report: assigned (dated 1989-08-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201210.gz","retrieved_at":"2026-10-12T22:34:49+00:00","summary":"ARIN delegated statistics 2020-12-10 (produced 2020-12-10T15:00:14+00:00), after the report: assigned (dated 1989-08-08)"}]}],"classification_history":{"312a7889f93f87f1":[{"raw_change_id":169854,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:51:18+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Tenneco Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2021-02-03 22:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":169854,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:58+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Tenneco Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2021-02-03 22:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":169854,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:45+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Tenneco Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2021-02-03 22:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":169854,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:04+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Tenneco Inc. (ARIN) to Palo Alto Networks, Inc (ARIN) on 2021-02-03 22:52 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"5f6c43a6e5d7a08a":[{"raw_change_id":561468,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:52+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Federal-Mogul Corporation (ARIN) to Tenneco Inc. (ARIN) on 2020-12-09 21:46 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 2021-02-03)"}}