{"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":"192.28.132.0 - 192.28.139.255","resource_type":"ipv4","page":"https://rirtracker.com/ip/192.28.132.0-192.28.139.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1988-02-16)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"acde0941369191fb","registry":"ARIN","report_date":"2016-05-19","source":"arin_issued","raw_action":"ADD","raw_line":"Add 192.28.132.0-192.28.139.255","resource_type":"ipv4","resource":"192.28.132.0 - 192.28.139.255","start":"192.28.132.0","end":"192.28.139.255","classification":"RANGE_REPRESENTATION_CHANGE","classification_label":"Range split/merge or reporting-format change","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:35+00:00","page":"https://rirtracker.com/ip/192.28.132.0-192.28.139.255/#e-acde0941369191fb","report_page":"https://rirtracker.com/arin/reports/2016-05-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.28.132.0-192.28.139.255.json","explanation":"This range is part of a larger block from which a piece was transferred around 2016-05-19; the rest was re-registered to show the split. ARIN's statistics show it allocated (dated 1988-02-16) on 2016-05-18 and allocated (dated 2016-05-19) on 2016-05-20.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2016-May/002716.html","retrieved_at":"2026-10-12T18:39:13+00:00","summary":"ARIN-Issued report for 2016-05-19: \"Add 192.28.132.0-192.28.139.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160518.gz","retrieved_at":"2026-10-12T21:10:35+00:00","summary":"ARIN delegated statistics 2016-05-18 (produced 2016-05-18T05:03:46+00:00), before the report: allocated (dated 1988-02-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160520.gz","retrieved_at":"2026-10-12T21:10:40+00:00","summary":"ARIN delegated statistics 2016-05-20 (produced 2016-05-20T05:04:58+00:00), after the report: allocated (dated 2016-05-19)"},{"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 2016-05-19 04:00 UTC, Lockheed Martin Corporation (ARIN) to (no name) (RIPE NCC); resources moved: 192.28.128.0/22"}]}],"classification_history":{"acde0941369191fb":[{"raw_change_id":145184,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:21+00:00","current":0,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2016-05-19; the rest was re-registered to show the split. ARIN's statistics show it allocated (dated 1988-02-16) on 2016-05-18 and allocated (dated 2016-05-19) on 2016-05-20."},{"raw_change_id":145184,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:51+00:00","current":0,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2016-05-19; the rest was re-registered to show the split. ARIN's statistics show it allocated (dated 1988-02-16) on 2016-05-18 and allocated (dated 2016-05-19) on 2016-05-20."},{"raw_change_id":145184,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:29+00:00","current":0,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2016-05-19; the rest was re-registered to show the split. ARIN's statistics show it allocated (dated 1988-02-16) on 2016-05-18 and allocated (dated 2016-05-19) on 2016-05-20."},{"raw_change_id":145184,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:35+00:00","current":1,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2016-05-19; the rest was re-registered to show the split. ARIN's statistics show it allocated (dated 1988-02-16) on 2016-05-18 and allocated (dated 2016-05-19) on 2016-05-20."}]},"arin_statistics_now":{"status":"allocated (dated 1988-02-16)"}}