{"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":"216.10.236.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.10.236.0-216.10.239.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-03-31)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"94410ea8ca5e012a","registry":"ARIN","report_date":"2015-03-31","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.10.236.0-216.10.239.255","resource_type":"ipv4","resource":"216.10.236.0/22","start":"216.10.236.0","end":"216.10.239.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:21+00:00","page":"https://rirtracker.com/ip/216.10.236.0-216.10.239.255/#e-94410ea8ca5e012a","report_page":"https://rirtracker.com/arin/reports/2015-03-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.10.236.0-216.10.239.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-30 and allocated (dated 2015-03-31) on 2015-04-01. The tracker saw this range released from hold on 2012-01-23 (216.10.236.0-216.10.239.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-March/002302.html","retrieved_at":"2026-10-12T18:38:43+00:00","summary":"ARIN-Issued report for 2015-03-31: \"Add 216.10.236.0-216.10.239.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150330.gz","retrieved_at":"2026-10-12T20:50:22+00:00","summary":"ARIN delegated statistics 2015-03-30 (produced 2015-03-30T05:05:14+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150401.gz","retrieved_at":"2026-10-12T20:50:27+00:00","summary":"ARIN delegated statistics 2015-04-01 (produced 2015-04-01T05:05:21+00:00), after the report: allocated (dated 2015-03-31)"}]},{"event_id":"b56b9f9fcbffa0e8","registry":"ARIN","report_date":"2012-01-23","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 216.10.236.0-216.10.239.255","resource_type":"ipv4","resource":"216.10.236.0/22","start":"216.10.236.0","end":"216.10.239.255","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":"2026-10-13T23:50:57+00:00","page":"https://rirtracker.com/ip/216.10.236.0-216.10.239.255/#e-b56b9f9fcbffa0e8","report_page":"https://rirtracker.com/arin/reports/2012-01-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.10.236.0-216.10.239.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-01-22 and not issued on 2012-01-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2012-January/001138.html","retrieved_at":"2026-10-12T18:37:23+00:00","summary":"ARIN-Issued report for 2012-01-23: \"Remove 216.10.236.0-216.10.239.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120122.gz","retrieved_at":"2026-10-12T19:30:34+00:00","summary":"ARIN delegated statistics 2012-01-22, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120124.gz","retrieved_at":"2026-10-12T19:30:39+00:00","summary":"ARIN delegated statistics 2012-01-24, after the report: not issued"}]}],"classification_history":{"94410ea8ca5e012a":[{"raw_change_id":136651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:30:10+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-30 and allocated (dated 2015-03-31) on 2015-04-01. The tracker saw this range released from hold on 2012-01-23 (216.10.236.0-216.10.239.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:41+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-30 and allocated (dated 2015-03-31) on 2015-04-01. The tracker saw this range released from hold on 2012-01-23 (216.10.236.0-216.10.239.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:18+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-30 and allocated (dated 2015-03-31) on 2015-04-01. The tracker saw this range released from hold on 2012-01-23 (216.10.236.0-216.10.239.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:21+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-03-30 and allocated (dated 2015-03-31) on 2015-04-01. The tracker saw this range released from hold on 2012-01-23 (216.10.236.0-216.10.239.255), so it appears to have been issued again from ARIN's pool."}],"b56b9f9fcbffa0e8":[{"raw_change_id":125306,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:16:03+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-01-22 and not issued on 2012-01-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":125306,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:23+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-01-22 and not issued on 2012-01-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":125306,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:57+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-01-22 and not issued on 2012-01-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":125306,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:57+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-01-22 and not issued on 2012-01-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."}]},"arin_statistics_now":{"status":"allocated (dated 2015-03-31)"}}