{"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":"151.181.32.0 - 151.181.95.255","resource_type":"ipv4","page":"https://rirtracker.com/ip/151.181.32.0-151.181.95.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2013-12-20)"},"current_holder":{"rir":"ARIN","org":"Fibertech Networks, LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":44123,"date":"2026-06-01T16:06:28Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Crown Castle Fiber LLC","recipient_org":"Zayo Bandwidth","range":"151.181.32.0/19","log":"ARIN"},{"id":44124,"date":"2026-06-01T16:06:28Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Crown Castle Fiber LLC","recipient_org":"Zayo Bandwidth","range":"151.181.64.0/19","log":"ARIN"},{"id":34643,"date":"2024-02-29T20:26:13Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Fibertech Networks, LLC","recipient_org":"Crown Castle Fiber LLC","range":"151.181.32.0/19","log":"ARIN"},{"id":34644,"date":"2024-02-29T20:26:13Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Fibertech Networks, LLC","recipient_org":"Crown Castle Fiber LLC","range":"151.181.64.0/19","log":"ARIN"},{"id":5445,"date":"2013-12-20T18:26:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Hodgson Russ LLP","recipient_org":"Fibertech Networks, LLC","range":"151.181.32.0/19","log":"ARIN"},{"id":5446,"date":"2013-12-20T18:26:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Hodgson Russ LLP","recipient_org":"Fibertech Networks, LLC","range":"151.181.64.0/19","log":"ARIN"}],"events":[{"event_id":"fe2997c7101d80ee","registry":"ARIN","report_date":"2013-12-20","source":"arin_issued","raw_action":"ADD","raw_line":"Add 151.181.32.0-151.181.95.255","resource_type":"ipv4","resource":"151.181.32.0 - 151.181.95.255","start":"151.181.32.0","end":"151.181.95.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Hodgson Russ LLP","recipient_organization":"Fibertech Networks, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:09+00:00","page":"https://rirtracker.com/ip/151.181.32.0-151.181.95.255/#e-fe2997c7101d80ee","report_page":"https://rirtracker.com/arin/reports/2013-12-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.181.32.0-151.181.95.255.json","piece_of":{"resource":"151.181.0.0/16","page":"https://rirtracker.com/ip/151.181.0.0-151.181.255.255/"},"explanation":"ARIN's transfer log records a transfer from Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2013-12-20 18:26 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/2013-December/001837.html","retrieved_at":"2026-10-12T18:38:11+00:00","summary":"ARIN-Issued report for 2013-12-20: \"Add 151.181.32.0-151.181.95.255\""},{"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 2013-12-20 18:26 UTC, Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN); resources moved: 151.181.32.0/19"},{"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 2013-12-20 18:26 UTC, Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN); resources moved: 151.181.64.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131219.gz","retrieved_at":"2026-10-12T20:09:13+00:00","summary":"ARIN delegated statistics 2013-12-19 (produced 2013-12-19T06:03:35+00:00), before the report: assigned (dated 1991-09-17)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131221.gz","retrieved_at":"2026-10-12T20:09:19+00:00","summary":"ARIN delegated statistics 2013-12-21 (produced 2013-12-21T06:03:32+00:00), after the report: allocated (dated 2013-12-20)"}]}],"classification_history":{"fe2997c7101d80ee":[{"raw_change_id":131000,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:23:04+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2013-12-20 18:26 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":131000,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:32+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2013-12-20 18:26 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":131000,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:07+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2013-12-20 18:26 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":131000,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:09+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Hodgson Russ LLP (ARIN) to Fibertech Networks, LLC (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2013-12-20 18:26 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 2013-12-20)"}}