{"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":"137.175.0.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/137.175.0.0-137.175.127.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2013-06-14)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"1a6c068cf853da18","registry":"ARIN","report_date":"2013-06-14","source":"arin_issued","raw_action":"ADD","raw_line":"Add 137.175.0.0-137.175.127.255","resource_type":"ipv4","resource":"137.175.0.0/17","start":"137.175.0.0","end":"137.175.127.255","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":"2026-10-13T23:51:06+00:00","page":"https://rirtracker.com/ip/137.175.0.0-137.175.127.255/#e-1a6c068cf853da18","report_page":"https://rirtracker.com/arin/reports/2013-06-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/137.175.0.0-137.175.127.255.json","explanation":"No transfer record matches. ARIN's statistics show it not listed on 2013-06-13 and allocated (dated 2013-06-14) on 2013-06-15. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2013-June/001646.html","retrieved_at":"2026-10-12T18:37:59+00:00","summary":"ARIN-Issued report for 2013-06-14: \"Add 137.175.0.0-137.175.127.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130613.gz","retrieved_at":"2026-10-12T20:00:10+00:00","summary":"ARIN delegated statistics 2013-06-13 (produced 2013-06-13T05:03:06+00:00), before the report: not listed"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130615.gz","retrieved_at":"2026-10-12T20:00:21+00:00","summary":"ARIN delegated statistics 2013-06-15 (produced 2013-06-15T05:03:05+00:00), after the report: allocated (dated 2013-06-14)"}]}],"classification_history":{"1a6c068cf853da18":[{"raw_change_id":129500,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:21:18+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2013-06-13 and allocated (dated 2013-06-14) on 2013-06-15. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":129500,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:30+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2013-06-13 and allocated (dated 2013-06-14) on 2013-06-15. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":129500,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:05+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2013-06-13 and allocated (dated 2013-06-14) on 2013-06-15. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":129500,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:06+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2013-06-13 and allocated (dated 2013-06-14) on 2013-06-15. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."}]},"arin_statistics_now":{"status":"allocated (dated 2013-06-14)"}}