{"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":"157.143.0.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/157.143.0.0-157.143.127.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 1992-01-08)"},"current_holder":{"rir":"RIPE NCC","org":"Iway AG","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":79003,"date":"2021-06-15T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Iway AG","range":"157.143.0.0/17","log":"RIPE NCC"},{"id":24852,"date":"2021-06-15T13:10:13Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"KBR","recipient_org":"Iway AG","range":"157.143.0.0/17","log":"ARIN"}],"events":[{"event_id":"b983964aed308100","registry":"ARIN","report_date":"2021-06-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"157.143.0.0/17","start":"157.143.0.0","end":"157.143.127.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"KBR","recipient_organization":"Iway AG","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:56+00:00","page":"https://rirtracker.com/ip/157.143.0.0-157.143.127.255/#e-b983964aed308100","report_page":"https://rirtracker.com/arin/reports/2021-06-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.143.0.0-157.143.127.255.json","observed":"Transfer: KBR (ARIN) to Iway AG (RIPE NCC)","piece_of":{"resource":"157.143.0.0/16","page":"https://rirtracker.com/ip/157.143.0.0-157.143.255.255/"},"same_transfer_as":"48e3e63895041d64","explanation":"ARIN's transfer log records a transfer from KBR (ARIN) to Iway AG (RIPE NCC) on 2021-06-15 13:10 UTC: it left ARIN for the RIPE NCC. It is not a new allocation and is not offered to ARIN applicants.","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: RESOURCE_TRANSFER on 2021-06-15 13:10 UTC, KBR (ARIN) to Iway AG (RIPE NCC); resources moved: 157.143.0.0/17"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210614.gz","retrieved_at":"2026-10-12T22:44:13+00:00","summary":"ARIN delegated statistics 2021-06-14 (produced 2021-06-14T14:00:13+00:00), before the report: assigned (dated 1992-01-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210616.gz","retrieved_at":"2026-10-12T22:44:18+00:00","summary":"ARIN delegated statistics 2021-06-16 (produced 2021-06-16T14:00:13+00:00), after the report: not listed"}]},{"event_id":"48e3e63895041d64","registry":"RIPE NCC","report_date":"2021-06-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"157.143.0.0/17","start":"157.143.0.0","end":"157.143.127.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Iway AG","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:39+00:00","page":"https://rirtracker.com/ip/157.143.0.0-157.143.127.255/#e-48e3e63895041d64","report_page":"https://rirtracker.com/ripe/reports/2021-06-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/157.143.0.0-157.143.127.255.json","observed":"Transfer: (no name) (ARIN) to Iway AG (RIPE NCC)","same_transfer_as":"b983964aed308100","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Iway AG (RIPE NCC) on 2021-06-15 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2021-06-15 19:00 UTC, (no name) (ARIN) to Iway AG (RIPE NCC); resources moved: 157.143.0.0/17"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210614.bz2","retrieved_at":"2026-10-12T23:09:56+00:00","summary":"RIPE NCC delegated statistics 2021-06-14 (produced 2021-06-14T21:59:00+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210615.bz2","retrieved_at":"2026-10-12T23:09:59+00:00","summary":"RIPE NCC delegated statistics 2021-06-15 (produced 2021-06-15T21:59:00+00:00), after the change: allocated (dated 1992-01-08)"}]}],"classification_history":{"b983964aed308100":[{"raw_change_id":563417,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:56+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from KBR (ARIN) to Iway AG (RIPE NCC) on 2021-06-15 13:10 UTC: it left ARIN for the RIPE NCC. 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