{"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":"72.21.0.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/72.21.0.0-72.21.7.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2021-03-15)"},"current_holder":{"rir":"ARIN","org":"Dixie EPA","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":24080,"date":"2021-03-15T21:28:30Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Colo Solutions Group, LLC","recipient_org":"Dixie EPA","range":"72.21.0.0/21","log":"ARIN"},{"id":14027,"date":"2018-07-30T18:16:38Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Colo Solutions, Inc.","recipient_org":"Colo Solutions Group, LLC","range":"72.21.0.0/19","log":"ARIN"}],"events":[{"event_id":"4d97a8d424435489","registry":"ARIN","report_date":"2021-03-15","source":"arin_issued","raw_action":"ADD","raw_line":"Add 72.21.0.0-72.21.7.255","resource_type":"ipv4","resource":"72.21.0.0/21","start":"72.21.0.0","end":"72.21.7.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Colo Solutions Group, LLC","recipient_organization":"Dixie EPA","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:06+00:00","page":"https://rirtracker.com/ip/72.21.0.0-72.21.7.255/#e-4d97a8d424435489","report_page":"https://rirtracker.com/arin/reports/2021-03-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/72.21.0.0-72.21.7.255.json","piece_of":{"resource":"72.21.0.0/19","page":"https://rirtracker.com/ip/72.21.0.0-72.21.31.255/"},"explanation":"ARIN's transfer log records a transfer from Colo Solutions Group, LLC (ARIN) to Dixie EPA (ARIN) on 2021-03-15 21:28 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/2021-March/004476.html","retrieved_at":"2026-10-12T18:41:15+00:00","summary":"ARIN-Issued report for 2021-03-15: \"Add 72.21.0.0-72.21.7.255\""},{"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 2021-03-15 21:28 UTC, Colo Solutions Group, LLC (ARIN) to Dixie EPA (ARIN); resources moved: 72.21.0.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210314.gz","retrieved_at":"2026-10-12T22:39:42+00:00","summary":"ARIN delegated statistics 2021-03-14 (produced 2021-03-14T14:00:13+00:00), before the report: allocated (dated 2004-12-03)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210316.gz","retrieved_at":"2026-10-12T22:39:47+00:00","summary":"ARIN delegated statistics 2021-03-16 (produced 2021-03-16T14:00:12+00:00), after the report: allocated (dated 2021-03-15)"}]}],"classification_history":{"4d97a8d424435489":[{"raw_change_id":170251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:51:36+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Colo Solutions Group, LLC (ARIN) to Dixie EPA (ARIN) on 2021-03-15 21:28 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":170251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:59+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Colo Solutions Group, LLC (ARIN) to Dixie EPA (ARIN) on 2021-03-15 21:28 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":170251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:46+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Colo Solutions Group, LLC (ARIN) to Dixie EPA (ARIN) on 2021-03-15 21:28 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":170251,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:06+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Colo Solutions Group, LLC (ARIN) to Dixie EPA (ARIN) on 2021-03-15 21:28 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 2021-03-15)"}}