{"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":"172.216.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/172.216.0.0-172.216.255.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 2002-02-13)"},"current_holder":{"rir":"RIPE NCC","org":"Cyberzone S.A.","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":116872,"date":"2025-12-03T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Cyberzone S.A.","range":"172.216.0.0/16","log":"RIPE NCC"},{"id":42136,"date":"2025-12-03T15:09:08Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"Yahoo Holdings Inc.","recipient_org":"Cyberzone S.A.","range":"172.216.0.0/16","log":"ARIN"},{"id":17178,"date":"2019-03-22T20:10:17Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"AOL Inc.","recipient_org":"Oath Holdings Inc.","range":"172.216.0.0/16","log":"ARIN"}],"events":[{"event_id":"ab7794243bcce0c9","registry":"ARIN","report_date":"2025-12-03","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"172.216.0.0/16","start":"172.216.0.0","end":"172.216.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"Yahoo Holdings Inc.","recipient_organization":"Cyberzone S.A.","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":"2026-10-14T00:13:54+00:00","page":"https://rirtracker.com/ip/172.216.0.0-172.216.255.255/#e-ab7794243bcce0c9","report_page":"https://rirtracker.com/arin/reports/2025-12-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.216.0.0-172.216.255.255.json","observed":"172.216.0.0/16 allocated on 2025-12-03, not listed on 2025-12-04","same_transfer_as":"8c9d5df584b34cb5","explanation":"ARIN's transfer log records a transfer from Yahoo Holdings Inc. (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 15:09 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-20251204.gz","retrieved_at":"2026-10-13T00:11:20+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 172.216.0.0/16 allocated on 2025-12-03, not listed on 2025-12-04"},{"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 2025-12-03 15:09 UTC, Yahoo Holdings Inc. (ARIN) to Cyberzone S.A. (RIPE NCC); resources moved: 172.216.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251202.gz","retrieved_at":"2026-10-13T00:11:15+00:00","summary":"ARIN delegated statistics 2025-12-02 (produced 2025-12-02T14:00:48+00:00), before the report: allocated (dated 2002-02-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251204.gz","retrieved_at":"2026-10-13T00:11:20+00:00","summary":"ARIN delegated statistics 2025-12-04 (produced 2025-12-04T14:00:49+00:00), after the report: not listed"}]},{"event_id":"8c9d5df584b34cb5","registry":"RIPE NCC","report_date":"2025-12-03","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"172.216.0.0/16","start":"172.216.0.0","end":"172.216.255.255","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":"Cyberzone S.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":"2026-10-13T23:50:40+00:00","page":"https://rirtracker.com/ip/172.216.0.0-172.216.255.255/#e-8c9d5df584b34cb5","report_page":"https://rirtracker.com/ripe/reports/2025-12-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.216.0.0-172.216.255.255.json","observed":"Transfer: (no name) (ARIN) to Cyberzone S.A. (RIPE NCC)","same_transfer_as":"ab7794243bcce0c9","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 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 2025-12-03 19:00 UTC, (no name) (ARIN) to Cyberzone S.A. (RIPE NCC); resources moved: 172.216.0.0/16"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2025/delegated-ripencc-extended-20251202.bz2","retrieved_at":"2026-10-13T01:15:15+00:00","summary":"RIPE NCC delegated statistics 2025-12-02 (produced 2025-12-02T22:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2025/delegated-ripencc-extended-20251203.bz2","retrieved_at":"2026-10-13T01:15:18+00:00","summary":"RIPE NCC delegated statistics 2025-12-03 (produced 2025-12-03T22:59:59+00:00), after the change: allocated (dated 2002-02-13)"}]},{"event_id":"e5ebe8c4f7017521","registry":"ARIN","report_date":"2019-03-22","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"172.216.0.0/16","start":"172.216.0.0","end":"172.216.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"AOL Inc.","recipient_organization":"Oath Holdings Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:43+00:00","page":"https://rirtracker.com/ip/172.216.0.0-172.216.255.255/#e-e5ebe8c4f7017521","report_page":"https://rirtracker.com/arin/reports/2019-03-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.216.0.0-172.216.255.255.json","observed":"Merger/acquisition: AOL Inc. (ARIN) to Oath Holdings Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from AOL Inc. (ARIN) to Oath Holdings Inc. (ARIN) on 2019-03-22 20:10 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 2019-03-22 20:10 UTC, AOL Inc. (ARIN) to Oath Holdings Inc. (ARIN); resources moved: 172.216.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190321.gz","retrieved_at":"2026-10-12T22:02:11+00:00","summary":"ARIN delegated statistics 2019-03-21 (produced 2019-03-21T05:00:18+00:00), before the report: allocated (dated 2002-02-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190323.gz","retrieved_at":"2026-10-12T22:02:16+00:00","summary":"ARIN delegated statistics 2019-03-23 (produced 2019-03-23T05:00:16+00:00), after the report: allocated (dated 2002-02-13)"}]}],"classification_history":{"ab7794243bcce0c9":[{"raw_change_id":489329,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T06:19:56+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Yahoo Holdings Inc. (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 15:09 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":489329,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:24:14+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Yahoo Holdings Inc. (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 15:09 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":489329,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:08:25+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Yahoo Holdings Inc. (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 15:09 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":489329,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:13:54+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Yahoo Holdings Inc. (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 15:09 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."}],"8c9d5df584b34cb5":[{"raw_change_id":117698,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:10:28+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 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":117698,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:10+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 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":117698,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:42+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 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":117698,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:40+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cyberzone S.A. (RIPE NCC) on 2025-12-03 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."}],"e5ebe8c4f7017521":[{"raw_change_id":558081,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:43+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from AOL Inc. (ARIN) to Oath Holdings Inc. (ARIN) on 2019-03-22 20:10 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"}}