{"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":"129.134.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/129.134.0.0-129.134.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-05-13)"},"current_holder":{"rir":"ARIN","org":"Facebook, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":5705,"date":"2015-05-13T19:56:36Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Concurrent Computer Corporation","recipient_org":"Facebook, Inc.","range":"129.134.0.0/16","log":"ARIN"}],"events":[{"event_id":"ada4a91b7109cb77","registry":"ARIN","report_date":"2015-05-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 129.134.0.0-129.134.255.255","resource_type":"ipv4","resource":"129.134.0.0/16","start":"129.134.0.0","end":"129.134.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Concurrent Computer Corporation","recipient_organization":"Facebook, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:23+00:00","page":"https://rirtracker.com/ip/129.134.0.0-129.134.255.255/#e-ada4a91b7109cb77","report_page":"https://rirtracker.com/arin/reports/2015-05-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/129.134.0.0-129.134.255.255.json","explanation":"ARIN's transfer log records a transfer from Concurrent Computer Corporation (ARIN) to Facebook, Inc. (ARIN) on 2015-05-13 19:56 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/2015-May/002344.html","retrieved_at":"2026-10-12T18:38:47+00:00","summary":"ARIN-Issued report for 2015-05-13: \"Add 129.134.0.0-129.134.255.255\""},{"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 2015-05-13 19:56 UTC, Concurrent Computer Corporation (ARIN) to Facebook, Inc. (ARIN); resources moved: 129.134.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150512.gz","retrieved_at":"2026-10-12T20:52:27+00:00","summary":"ARIN delegated statistics 2015-05-12 (produced 2015-05-12T05:04:55+00:00), before the report: assigned (dated 1987-12-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150514.gz","retrieved_at":"2026-10-12T20:52:32+00:00","summary":"ARIN delegated statistics 2015-05-14 (produced 2015-05-14T05:04:42+00:00), after the report: assigned (dated 2015-05-13)"}]}],"classification_history":{"ada4a91b7109cb77":[{"raw_change_id":137433,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:31:08+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Computer Corporation (ARIN) to Facebook, Inc. (ARIN) on 2015-05-13 19:56 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":137433,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:42+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Computer Corporation (ARIN) to Facebook, Inc. (ARIN) on 2015-05-13 19:56 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":137433,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:19+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Computer Corporation (ARIN) to Facebook, Inc. (ARIN) on 2015-05-13 19:56 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":137433,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:23+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Computer Corporation (ARIN) to Facebook, Inc. (ARIN) on 2015-05-13 19:56 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 2015-05-13)"}}