{"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":"198.51.140.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/198.51.140.0-198.51.140.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2013-09-17)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"1a7e244090a87aaf","registry":"ARIN","report_date":"2013-09-17","source":"arin_issued","raw_action":"ADD","raw_line":"Add 198.51.140.0-198.51.140.255","resource_type":"ipv4","resource":"198.51.140.0/24","start":"198.51.140.0","end":"198.51.140.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","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":"2026-10-13T23:51:08+00:00","page":"https://rirtracker.com/ip/198.51.140.0-198.51.140.255/#e-1a7e244090a87aaf","report_page":"https://rirtracker.com/arin/reports/2013-09-17/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.51.140.0-198.51.140.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2013-09-16 and assigned (dated 2013-09-17) on 2013-09-18. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2013-September/001742.html","retrieved_at":"2026-10-12T18:38:05+00:00","summary":"ARIN-Issued report for 2013-09-17: \"Add 198.51.140.0-198.51.140.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130916.gz","retrieved_at":"2026-10-12T20:04:43+00:00","summary":"ARIN delegated statistics 2013-09-16 (produced 2013-09-16T05:03:08+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130918.gz","retrieved_at":"2026-10-12T20:04:48+00:00","summary":"ARIN delegated statistics 2013-09-18 (produced 2013-09-18T05:03:24+00:00), after the report: assigned (dated 2013-09-17)"}]},{"event_id":"29ea39306fbc4b01","registry":"ARIN","report_date":"2009-07-27","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 198.51.140.0-198.51.140.255","resource_type":"ipv4","resource":"198.51.140.0/24","start":"198.51.140.0","end":"198.51.140.255","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":"2026-10-13T23:50:46+00:00","page":"https://rirtracker.com/ip/198.51.140.0-198.51.140.255/#e-29ea39306fbc4b01","report_page":"https://rirtracker.com/arin/reports/2009-07-27/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.51.140.0-198.51.140.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-07-26 and not issued on 2009-07-28. (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/2009-July/000221.html","retrieved_at":"2026-10-12T18:36:19+00:00","summary":"ARIN-Issued report for 2009-07-27: \"Remove 198.51.140.0-198.51.140.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090726.gz","retrieved_at":"2026-10-12T18:53:09+00:00","summary":"ARIN delegated statistics 2009-07-26, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2009/delegated-arin-20090728.gz","retrieved_at":"2026-10-12T18:53:14+00:00","summary":"ARIN delegated statistics 2009-07-28, after the report: not issued"}]}],"classification_history":{"1a7e244090a87aaf":[{"raw_change_id":130217,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:22:13+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2013-09-16 and assigned (dated 2013-09-17) on 2013-09-18. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":130217,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:31+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2013-09-16 and assigned (dated 2013-09-17) on 2013-09-18. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":130217,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:06+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2013-09-16 and assigned (dated 2013-09-17) on 2013-09-18. The tracker saw this range released from hold on 2009-07-27 (198.51.140.0-198.51.140.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":130217,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:08+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2013-09-16 and assigned (dated 2013-09-17) on 2013-09-18. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"29ea39306fbc4b01":[{"raw_change_id":119995,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:11:30+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-07-26 and not issued on 2009-07-28. (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":119995,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:14+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-07-26 and not issued on 2009-07-28. (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":119995,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:48+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-07-26 and not issued on 2009-07-28. (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":119995,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:46+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2009-07-26 and not issued on 2009-07-28. (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 2013-09-17)"}}