{"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":"157.212.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/157.212.0.0-157.212.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2022-06-15)"},"current_holder":{"rir":"ARIN","org":"TDS TELECOM","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":28329,"date":"2022-06-15T18:47:11Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Infineon technologies Americas Corp","recipient_org":"TDS TELECOM","range":"157.212.0.0/16","log":"ARIN"},{"id":25386,"date":"2021-08-25T20:20:49Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Cypress Semiconductor Corporation","recipient_org":"Infineon technologies Americas Corp","range":"157.212.0.0/16","log":"ARIN"}],"events":[{"event_id":"e5e35abf2cfc96b7","registry":"ARIN","report_date":"2022-06-15","source":"arin_issued","raw_action":"ADD","raw_line":"Add 157.212.0.0-157.212.255.255","resource_type":"ipv4","resource":"157.212.0.0/16","start":"157.212.0.0","end":"157.212.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Infineon technologies Americas Corp","recipient_organization":"TDS TELECOM","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:24+00:00","page":"https://rirtracker.com/ip/157.212.0.0-157.212.255.255/#e-e5e35abf2cfc96b7","report_page":"https://rirtracker.com/arin/reports/2022-06-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.212.0.0-157.212.255.255.json","explanation":"ARIN's transfer log records a transfer from Infineon technologies Americas Corp (ARIN) to TDS TELECOM (ARIN) on 2022-06-15 18:47 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/2022-June/004933.html","retrieved_at":"2026-10-12T18:41:47+00:00","summary":"ARIN-Issued report for 2022-06-15: \"Add 157.212.0.0-157.212.255.255\""},{"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 2022-06-15 18:47 UTC, Infineon technologies Americas Corp (ARIN) to TDS TELECOM (ARIN); resources moved: 157.212.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220614.gz","retrieved_at":"2026-10-12T23:02:54+00:00","summary":"ARIN delegated statistics 2022-06-14 (produced 2022-06-14T13:00:09+00:00), before the report: allocated (dated 1992-01-30)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220616.gz","retrieved_at":"2026-10-12T23:02:58+00:00","summary":"ARIN delegated statistics 2022-06-16 (produced 2022-06-16T13:00:08+00:00), after the report: allocated (dated 2022-06-15)"}]},{"event_id":"4fef66a9c76b353d","registry":"ARIN","report_date":"2021-08-25","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"157.212.0.0/16","start":"157.212.0.0","end":"157.212.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Cypress Semiconductor Corporation","recipient_organization":"Infineon technologies Americas Corp","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:57+00:00","page":"https://rirtracker.com/ip/157.212.0.0-157.212.255.255/#e-4fef66a9c76b353d","report_page":"https://rirtracker.com/arin/reports/2021-08-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.212.0.0-157.212.255.255.json","observed":"Merger/acquisition: Cypress Semiconductor Corporation (ARIN) to Infineon technologies Americas Corp (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cypress Semiconductor Corporation (ARIN) to Infineon technologies Americas Corp (ARIN) on 2021-08-25 20:20 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 2021-08-25 20:20 UTC, Cypress Semiconductor Corporation (ARIN) to Infineon technologies Americas Corp (ARIN); resources moved: 157.212.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210824.gz","retrieved_at":"2026-10-12T22:47:43+00:00","summary":"ARIN delegated statistics 2021-08-24 (produced 2021-08-24T14:00:13+00:00), before the report: assigned (dated 1992-01-30)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210826.gz","retrieved_at":"2026-10-12T22:47:48+00:00","summary":"ARIN delegated statistics 2021-08-26 (produced 2021-08-26T14:00:14+00:00), after the report: assigned (dated 1992-01-30)"}]}],"classification_history":{"e5e35abf2cfc96b7":[{"raw_change_id":176797,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:56:09+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Infineon technologies Americas Corp (ARIN) to TDS TELECOM (ARIN) on 2022-06-15 18:47 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":176797,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:14+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Infineon technologies Americas Corp (ARIN) to TDS TELECOM (ARIN) on 2022-06-15 18:47 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":176797,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:02+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Infineon technologies Americas Corp (ARIN) to TDS TELECOM (ARIN) on 2022-06-15 18:47 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":176797,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:24+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Infineon technologies Americas Corp (ARIN) to TDS TELECOM (ARIN) on 2022-06-15 18:47 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"4fef66a9c76b353d":[{"raw_change_id":563748,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:57+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cypress Semiconductor Corporation (ARIN) to Infineon technologies Americas Corp (ARIN) on 2021-08-25 20:20 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 2022-06-15)"}}