{"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":"66.81.40.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/66.81.40.0-66.81.47.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2012-02-13)"},"current_holder":{"rir":"ARIN","org":"HFA Specialty Assets LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":26330,"date":"2021-12-09T20:19:56Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"O1.com","recipient_org":"HFA Specialty Assets LLC","range":"66.81.40.0/21","log":"ARIN"}],"events":[{"event_id":"b4b765e3daf9a062","registry":"ARIN","report_date":"2021-12-09","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"66.81.40.0/21","start":"66.81.40.0","end":"66.81.47.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"O1.com","recipient_organization":"HFA Specialty Assets LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:59+00:00","page":"https://rirtracker.com/ip/66.81.40.0-66.81.47.255/#e-b4b765e3daf9a062","report_page":"https://rirtracker.com/arin/reports/2021-12-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.81.40.0-66.81.47.255.json","observed":"Merger/acquisition: O1.com (ARIN) to HFA Specialty Assets LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from O1.com (ARIN) to HFA Specialty Assets LLC (ARIN) on 2021-12-09 20:19 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 2021-12-09 20:19 UTC, O1.com (ARIN) to HFA Specialty Assets LLC (ARIN); resources moved: 66.81.40.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211208.gz","retrieved_at":"2026-10-12T22:53:25+00:00","summary":"ARIN delegated statistics 2021-12-08 (produced 2021-12-08T14:00:13+00:00), before the report: allocated (dated 2012-02-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211210.gz","retrieved_at":"2026-10-12T22:53:30+00:00","summary":"ARIN delegated statistics 2021-12-10 (produced 2021-12-10T14:00:12+00:00), after the report: allocated (dated 2012-02-13)"}]},{"event_id":"04de0c63185144da","registry":"ARIN","report_date":"2012-02-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 66.81.40.0-66.81.47.255","resource_type":"ipv4","resource":"66.81.40.0/21","start":"66.81.40.0","end":"66.81.47.255","classification":"UNRESOLVED","classification_label":"Unresolved change","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Inventory effect unknown","inventory_effect_code":"UNKNOWN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:58+00:00","page":"https://rirtracker.com/ip/66.81.40.0-66.81.47.255/#e-04de0c63185144da","report_page":"https://rirtracker.com/arin/reports/2012-02-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.81.40.0-66.81.47.255.json","explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2001-02-28) on 2012-02-12 and allocated (dated 2012-02-13) on 2012-02-14. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registration was replaced with one for a different holder record, and public sources don't say why (a transfer not yet logged, a return and reissue, or an organization record change).","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2012-February/001159.html","retrieved_at":"2026-10-12T18:37:25+00:00","summary":"ARIN-Issued report for 2012-02-13: \"Add 66.81.40.0-66.81.47.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120212.gz","retrieved_at":"2026-10-12T19:31:48+00:00","summary":"ARIN delegated statistics 2012-02-12, before the report: allocated (dated 2001-02-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120214.gz","retrieved_at":"2026-10-12T19:31:53+00:00","summary":"ARIN delegated statistics 2012-02-14, after the report: allocated (dated 2012-02-13)"}]}],"classification_history":{"b4b765e3daf9a062":[{"raw_change_id":564357,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:59+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from O1.com (ARIN) to HFA Specialty Assets LLC (ARIN) on 2021-12-09 20:19 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."}],"04de0c63185144da":[{"raw_change_id":125468,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:16:16+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2001-02-28) on 2012-02-12 and allocated (dated 2012-02-13) on 2012-02-14. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registration was replaced with one for a different holder record, and public sources don't say why (a transfer not yet logged, a return and reissue, or an organization record change)."},{"raw_change_id":125468,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:23+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2001-02-28) on 2012-02-12 and allocated (dated 2012-02-13) on 2012-02-14. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registration was replaced with one for a different holder record, and public sources don't say why (a transfer not yet logged, a return and reissue, or an organization record change)."},{"raw_change_id":125468,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:57+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2001-02-28) on 2012-02-12 and allocated (dated 2012-02-13) on 2012-02-14. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registration was replaced with one for a different holder record, and public sources don't say why (a transfer not yet logged, a return and reissue, or an organization record change)."},{"raw_change_id":125468,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:58+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2001-02-28) on 2012-02-12 and allocated (dated 2012-02-13) on 2012-02-14. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registration was replaced with one for a different holder record, and public sources don't say why (a transfer not yet logged, a return and reissue, or an organization record change)."}]},"arin_statistics_now":{"status":"allocated (dated 2012-02-13)"}}