{"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":"150.252.224.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/150.252.224.0-150.252.239.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 1991-08-19)"},"current_holder":{"rir":"RIPE NCC","org":"UNIDATA S.p.A.","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":101802,"date":"2024-01-30T19:00:00Z","type":"MERGER_ACQUISITION","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_org":"TWT S.p.A.","recipient_org":"UNIDATA S.p.A.","range":"150.252.224.0/20","log":"RIPE NCC"},{"id":78051,"date":"2021-05-06T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"TWT S.p.A.","range":"150.252.224.0/20","log":"RIPE NCC"},{"id":24563,"date":"2021-05-06T11:49:49Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"Abilene Christian University","recipient_org":"TWT SpA","range":"150.252.224.0/20","log":"ARIN"}],"events":[{"event_id":"619d5c24102078ca","registry":"RIPE NCC","report_date":"2024-01-30","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"150.252.224.0/20","start":"150.252.224.0","end":"150.252.239.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"RIPE NCC","source_organization":"TWT S.p.A.","recipient_organization":"UNIDATA S.p.A.","inventory_effect":"No effect on RIPE NCC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:52+00:00","page":"https://rirtracker.com/ip/150.252.224.0-150.252.239.255/#e-619d5c24102078ca","report_page":"https://rirtracker.com/ripe/reports/2024-01-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.252.224.0-150.252.239.255.json","observed":"Merger/acquisition: TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC)","explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC) on 2024-01-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC.","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: MERGER_ACQUISITION on 2024-01-30 19:00 UTC, TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC); resources moved: 150.252.224.0/20"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2024/delegated-ripencc-extended-20240129.bz2","retrieved_at":"2026-10-13T00:22:10+00:00","summary":"RIPE NCC delegated statistics 2024-01-29 (produced 2024-01-29T22:59:59+00:00), before the change: allocated (dated 1991-08-19)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2024/delegated-ripencc-extended-20240130.bz2","retrieved_at":"2026-10-13T00:22:34+00:00","summary":"RIPE NCC delegated statistics 2024-01-30 (produced 2024-01-30T22:59:59+00:00), after the change: allocated (dated 1991-08-19)"}]},{"event_id":"64f3acc9b90abf97","registry":"RIPE NCC","report_date":"2021-05-06","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"150.252.224.0/20","start":"150.252.224.0","end":"150.252.239.255","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":"TWT S.p.A.","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":"2026-10-13T23:48:36+00:00","page":"https://rirtracker.com/ip/150.252.224.0-150.252.239.255/#e-64f3acc9b90abf97","report_page":"https://rirtracker.com/ripe/reports/2021-05-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.252.224.0-150.252.239.255.json","observed":"Transfer: (no name) (ARIN) to TWT S.p.A. (RIPE NCC)","same_transfer_as":"f0f1c5e844a742dd","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to TWT S.p.A. (RIPE NCC) on 2021-05-06 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 2021-05-06 19:00 UTC, (no name) (ARIN) to TWT S.p.A. (RIPE NCC); resources moved: 150.252.224.0/20"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210505.bz2","retrieved_at":"2026-10-12T23:07:00+00:00","summary":"RIPE NCC delegated statistics 2021-05-05 (produced 2021-05-05T21:59:00+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210506.bz2","retrieved_at":"2026-10-12T23:07:03+00:00","summary":"RIPE NCC delegated statistics 2021-05-06 (produced 2021-05-06T21:59:00+00:00), after the change: allocated (dated 1991-08-19)"}]},{"event_id":"f0f1c5e844a742dd","registry":"ARIN","report_date":"2021-05-05","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"150.252.224.0/20","start":"150.252.224.0","end":"150.252.239.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"Abilene Christian University","recipient_organization":"TWT SpA","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":"2026-10-14T00:08:08+00:00","page":"https://rirtracker.com/ip/150.252.224.0-150.252.239.255/#e-f0f1c5e844a742dd","report_page":"https://rirtracker.com/arin/reports/2021-05-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.252.224.0-150.252.239.255.json","observed":"150.252.224.0/20 assigned on 2021-05-05, not listed on 2021-05-06","same_transfer_as":"64f3acc9b90abf97","explanation":"ARIN's transfer log records a transfer from Abilene Christian University (ARIN) to TWT SpA (RIPE NCC) on 2021-05-06 11:49 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210506.gz","retrieved_at":"2026-10-12T22:42:14+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 150.252.224.0/20 assigned on 2021-05-05, not listed on 2021-05-06"},{"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 2021-05-06 11:49 UTC, Abilene Christian University (ARIN) to TWT SpA (RIPE NCC); resources moved: 150.252.224.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210504.gz","retrieved_at":"2026-10-12T22:42:09+00:00","summary":"ARIN delegated statistics 2021-05-04 (produced 2021-05-04T14:00:13+00:00), before the report: assigned (dated 1991-08-19)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210506.gz","retrieved_at":"2026-10-12T22:42:14+00:00","summary":"ARIN delegated statistics 2021-05-06 (produced 2021-05-06T14:00:13+00:00), after the report: not listed"}]}],"classification_history":{"619d5c24102078ca":[{"raw_change_id":102354,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:03:43+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC) on 2024-01-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":102354,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:04:32+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC) on 2024-01-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":102354,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:00+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC) on 2024-01-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."},{"raw_change_id":102354,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:52+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a merger, acquisition or reorganization from TWT S.p.A. (RIPE NCC) to UNIDATA S.p.A. (RIPE NCC) on 2024-01-30 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC."}],"64f3acc9b90abf97":[{"raw_change_id":78185,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:53:41+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to TWT S.p.A. (RIPE NCC) on 2021-05-06 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."},{"raw_change_id":78185,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:03:32+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to TWT S.p.A. (RIPE NCC) on 2021-05-06 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."},{"raw_change_id":78185,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:45:53+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to TWT S.p.A. (RIPE NCC) on 2021-05-06 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."},{"raw_change_id":78185,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:36+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to TWT S.p.A. (RIPE NCC) on 2021-05-06 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."}],"f0f1c5e844a742dd":[{"raw_change_id":411994,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:45:15+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Abilene Christian University (ARIN) to TWT SpA (RIPE NCC) on 2021-05-06 11:49 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":411994,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:19:36+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Abilene Christian University (ARIN) to TWT SpA (RIPE NCC) on 2021-05-06 11:49 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":411994,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:03:27+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Abilene Christian University (ARIN) to TWT SpA (RIPE NCC) on 2021-05-06 11:49 UTC: it left ARIN for the RIPE NCC. 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