{"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":"47.91.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/47.91.0.0-47.91.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-05-18)"},"current_holder":{"rir":"ARIN","org":"Alibaba.com LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":5718,"date":"2015-05-18T21:59:30Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Bell-Northern Research","recipient_org":"Alibaba.com LLC","range":"47.91.0.0/16","log":"ARIN"},{"id":5716,"date":"2015-05-18T21:59:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Bell-Northern Research","recipient_org":"Alibaba.com LLC","range":"47.88.0.0/14","log":"ARIN"}],"events":[{"event_id":"a39599f3eb580636","registry":"ARIN","report_date":"2015-05-18","source":"arin_issued","raw_action":"ADD","raw_line":"Add 47.91.0.0-47.91.255.255","resource_type":"ipv4","resource":"47.91.0.0/16","start":"47.91.0.0","end":"47.91.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Bell-Northern Research","recipient_organization":"Alibaba.com LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:23+00:00","page":"https://rirtracker.com/ip/47.91.0.0-47.91.255.255/#e-a39599f3eb580636","report_page":"https://rirtracker.com/arin/reports/2015-05-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/47.91.0.0-47.91.255.255.json","piece_of":{"resource":"47.0.0.0/8","page":"https://rirtracker.com/ip/47.0.0.0-47.255.255.255/"},"explanation":"ARIN's transfer log records a transfer from Bell-Northern Research (ARIN) to Alibaba.com LLC (ARIN) on 2015-05-18 21:59 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/2015-May/002349.html","retrieved_at":"2026-10-12T18:38:47+00:00","summary":"ARIN-Issued report for 2015-05-18: \"Add 47.91.0.0-47.91.255.255\""},{"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 2015-05-18 21:59 UTC, Bell-Northern Research (ARIN) to Alibaba.com LLC (ARIN); resources moved: 47.91.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150517.gz","retrieved_at":"2026-10-12T20:52:46+00:00","summary":"ARIN delegated statistics 2015-05-17 (produced 2015-05-17T05:05:39+00:00), before the report: assigned (dated 1989-01-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150519.gz","retrieved_at":"2026-10-12T20:52:51+00:00","summary":"ARIN delegated statistics 2015-05-19 (produced 2015-05-19T05:04:44+00:00), after the report: assigned (dated 2015-05-18)"}]}],"classification_history":{"a39599f3eb580636":[{"raw_change_id":137501,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:31:14+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Bell-Northern Research (ARIN) to Alibaba.com LLC (ARIN) on 2015-05-18 21:59 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":137501,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:42+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Bell-Northern Research (ARIN) to Alibaba.com LLC (ARIN) on 2015-05-18 21:59 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":137501,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:19+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Bell-Northern Research (ARIN) to Alibaba.com LLC (ARIN) on 2015-05-18 21:59 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":137501,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:23+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Bell-Northern Research (ARIN) to Alibaba.com LLC (ARIN) on 2015-05-18 21:59 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2015-05-18)"}}