{"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":"205.157.160.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/205.157.160.0-205.157.191.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 1999-02-08)"},"current_holder":{"rir":"RIPE NCC","org":"ICUK Computing Services Limited","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":117685,"date":"2025-12-23T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"ICUK Computing Services Limited","range":"205.157.160.0/19","log":"RIPE NCC"},{"id":42367,"date":"2025-12-23T14:30:39Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"Clarion Events","recipient_org":"ICUK Computing Services Limited","range":"205.157.160.0/19","log":"ARIN"},{"id":41743,"date":"2025-10-16T20:46:02Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"PennWell Corporation","recipient_org":"Clarion Events","range":"205.157.160.0/19","log":"ARIN"}],"events":[{"event_id":"d06d8407c85c80a5","registry":"ARIN","report_date":"2025-12-23","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"205.157.160.0/19","start":"205.157.160.0","end":"205.157.191.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"Clarion Events","recipient_organization":"ICUK Computing Services Limited","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":"2026-10-14T00:13:55+00:00","page":"https://rirtracker.com/ip/205.157.160.0-205.157.191.255/#e-d06d8407c85c80a5","report_page":"https://rirtracker.com/arin/reports/2025-12-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.157.160.0-205.157.191.255.json","observed":"205.157.160.0/19 allocated on 2025-12-23, not listed on 2025-12-24","same_transfer_as":"89e0db8045682851","explanation":"ARIN's transfer log records a transfer from Clarion Events (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 14:30 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/2025/delegated-arin-extended-20251224.gz","retrieved_at":"2026-10-13T00:12:16+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 205.157.160.0/19 allocated on 2025-12-23, not listed on 2025-12-24"},{"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 2025-12-23 14:30 UTC, Clarion Events (ARIN) to ICUK Computing Services Limited (RIPE NCC); resources moved: 205.157.160.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251222.gz","retrieved_at":"2026-10-13T00:12:11+00:00","summary":"ARIN delegated statistics 2025-12-22 (produced 2025-12-22T14:00:47+00:00), before the report: allocated (dated 1999-02-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251224.gz","retrieved_at":"2026-10-13T00:12:16+00:00","summary":"ARIN delegated statistics 2025-12-24 (produced 2025-12-24T14:00:48+00:00), after the report: not listed"}]},{"event_id":"89e0db8045682851","registry":"RIPE NCC","report_date":"2025-12-23","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"205.157.160.0/19","start":"205.157.160.0","end":"205.157.191.255","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":"ICUK Computing Services Limited","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":"2026-10-13T23:50:42+00:00","page":"https://rirtracker.com/ip/205.157.160.0-205.157.191.255/#e-89e0db8045682851","report_page":"https://rirtracker.com/ripe/reports/2025-12-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.157.160.0-205.157.191.255.json","observed":"Transfer: (no name) (ARIN) to ICUK Computing Services Limited (RIPE NCC)","same_transfer_as":"d06d8407c85c80a5","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 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 2025-12-23 19:00 UTC, (no name) (ARIN) to ICUK Computing Services Limited (RIPE NCC); resources moved: 205.157.160.0/19"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2025/delegated-ripencc-extended-20251222.bz2","retrieved_at":"2026-10-13T01:16:40+00:00","summary":"RIPE NCC delegated statistics 2025-12-22 (produced 2025-12-22T22:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2025/delegated-ripencc-extended-20251223.bz2","retrieved_at":"2026-10-13T01:16:43+00:00","summary":"RIPE NCC delegated statistics 2025-12-23 (produced 2025-12-23T22:59:59+00:00), after the change: allocated (dated 1999-02-08)"}]},{"event_id":"499212c89f311ce2","registry":"ARIN","report_date":"2025-10-16","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"205.157.160.0/19","start":"205.157.160.0","end":"205.157.191.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"PennWell Corporation","recipient_organization":"Clarion Events","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:24+00:00","page":"https://rirtracker.com/ip/205.157.160.0-205.157.191.255/#e-499212c89f311ce2","report_page":"https://rirtracker.com/arin/reports/2025-10-16/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.157.160.0-205.157.191.255.json","observed":"Merger/acquisition: PennWell Corporation (ARIN) to Clarion Events (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from PennWell Corporation (ARIN) to Clarion Events (ARIN) on 2025-10-16 20:46 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 2025-10-16 20:46 UTC, PennWell Corporation (ARIN) to Clarion Events (ARIN); resources moved: 205.157.160.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251015.gz","retrieved_at":"2026-10-13T00:08:28+00:00","summary":"ARIN delegated statistics 2025-10-15 (produced 2025-10-15T13:00:47+00:00), before the report: allocated (dated 1999-02-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251017.gz","retrieved_at":"2026-10-13T00:08:48+00:00","summary":"ARIN delegated statistics 2025-10-17 (produced 2025-10-17T13:00:47+00:00), after the report: allocated (dated 1999-02-08)"}]}],"classification_history":{"d06d8407c85c80a5":[{"raw_change_id":489761,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T06:20:09+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Clarion Events (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 14:30 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":489761,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:24:15+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Clarion Events (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 14:30 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":489761,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:08:26+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Clarion Events (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 14:30 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":489761,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:13:55+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Clarion Events (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 14:30 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."}],"89e0db8045682851":[{"raw_change_id":118532,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:10:50+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 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":118532,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:12+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 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":118532,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:45+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 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":118532,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:42+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to ICUK Computing Services Limited (RIPE NCC) on 2025-12-23 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."}],"499212c89f311ce2":[{"raw_change_id":574624,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:24+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from PennWell Corporation (ARIN) to Clarion Events (ARIN) on 2025-10-16 20:46 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":"not listed"}}