{"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":"146.88.28.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/146.88.28.0-146.88.31.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2014-11-04), allocated (dated 2015-01-20)"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[{"id":5605,"date":"2015-01-20T17:45:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"National Radio Astronomy Observatory","recipient_org":"AMDOCS, INC.","range":"146.88.30.0/23","log":"ARIN"},{"id":5539,"date":"2014-11-04T20:21:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"National Radio Astronomy Observatory","recipient_org":"Zthernet, LLC","range":"146.88.29.0/24","log":"ARIN"},{"id":5474,"date":"2014-05-16T15:30:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"National Radio Astronomy Observatory","recipient_org":null,"range":"146.88.28.0/24","log":"ARIN"},{"id":124003,"date":"2014-05-16T07:04:30Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"NRAO-2","recipient_org":"CAMPAIGN MONITOR PTY LTD","range":"146.88.28.0/24","log":"APNIC"}],"events":[{"event_id":"dd31d741639ec0a5","registry":"ARIN","report_date":"2014-04-23","source":"arin_issued","raw_action":"ADD","raw_line":"Add 146.88.28.0-146.88.31.255","resource_type":"ipv4","resource":"146.88.28.0/22","start":"146.88.28.0","end":"146.88.31.255","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":"2026-10-13T23:51:11+00:00","page":"https://rirtracker.com/ip/146.88.28.0-146.88.31.255/#e-dd31d741639ec0a5","report_page":"https://rirtracker.com/arin/reports/2014-04-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/146.88.28.0-146.88.31.255.json","explanation":"This range is part of a larger block from which a piece was transferred around 2014-04-23; the rest was re-registered to show the split. ARIN's statistics show it assigned (dated 1991-01-28) on 2014-04-22 and assigned (dated 2014-04-23) on 2014-04-24.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-April/001961.html","retrieved_at":"2026-10-12T18:38:20+00:00","summary":"ARIN-Issued report for 2014-04-23: \"Add 146.88.28.0-146.88.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140422.gz","retrieved_at":"2026-10-12T20:15:09+00:00","summary":"ARIN delegated statistics 2014-04-22 (produced 2014-04-22T05:05:00+00:00), before the report: assigned (dated 1991-01-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140424.gz","retrieved_at":"2026-10-12T20:15:14+00:00","summary":"ARIN delegated statistics 2014-04-24 (produced 2014-04-24T05:04:38+00:00), after the report: assigned (dated 2014-04-23)"},{"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 2014-04-23 15:26 UTC, National Radio Astronomy Observatory (ARIN) to (no name) (APNIC); resources moved: 146.88.24.0/22"}]}],"classification_history":{"dd31d741639ec0a5":[{"raw_change_id":132070,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:24:24+00:00","current":0,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2014-04-23; the rest was re-registered to show the split. ARIN's statistics show it assigned (dated 1991-01-28) on 2014-04-22 and assigned (dated 2014-04-23) on 2014-04-24."},{"raw_change_id":132070,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:33+00:00","current":0,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2014-04-23; the rest was re-registered to show the split. ARIN's statistics show it assigned (dated 1991-01-28) on 2014-04-22 and assigned (dated 2014-04-23) on 2014-04-24."},{"raw_change_id":132070,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:09+00:00","current":0,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2014-04-23; the rest was re-registered to show the split. ARIN's statistics show it assigned (dated 1991-01-28) on 2014-04-22 and assigned (dated 2014-04-23) on 2014-04-24."},{"raw_change_id":132070,"classification_code":"RANGE_REPRESENTATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:11+00:00","current":1,"public_explanation":"This range is part of a larger block from which a piece was transferred around 2014-04-23; the rest was re-registered to show the split. ARIN's statistics show it assigned (dated 1991-01-28) on 2014-04-22 and assigned (dated 2014-04-23) on 2014-04-24."}]},"arin_statistics_now":{"status":"allocated (dated 2014-11-04), allocated (dated 2015-01-20)"}}