{"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":"144.172.128.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/144.172.128.0-144.172.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2014-05-13)"},"current_holder":{"rir":"ARIN","org":"Videotron Ltee","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":21667,"date":"2020-10-08T17:52:46Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Le Groupe Videotron Ltee","recipient_org":"Videotron Ltee","range":"144.172.128.0/17","log":"ARIN"}],"events":[{"event_id":"c174da14c67d0f6e","registry":"ARIN","report_date":"2020-10-08","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"144.172.128.0/17","start":"144.172.128.0","end":"144.172.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Le Groupe Videotron Ltee","recipient_organization":"Videotron Ltee","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:51+00:00","page":"https://rirtracker.com/ip/144.172.128.0-144.172.255.255/#e-c174da14c67d0f6e","report_page":"https://rirtracker.com/arin/reports/2020-10-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.172.128.0-144.172.255.255.json","observed":"Merger/acquisition: Le Groupe Videotron Ltee (ARIN) to Videotron Ltee (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Le Groupe Videotron Ltee (ARIN) to Videotron Ltee (ARIN) on 2020-10-08 17:52 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"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: MERGER_ACQUISITION on 2020-10-08 17:52 UTC, Le Groupe Videotron Ltee (ARIN) to Videotron Ltee (ARIN); resources moved: 144.172.128.0/17"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201007.gz","retrieved_at":"2026-10-12T22:31:23+00:00","summary":"ARIN delegated statistics 2020-10-07 (produced 2020-10-07T14:00:14+00:00), before the report: allocated (dated 2014-05-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201009.gz","retrieved_at":"2026-10-12T22:31:37+00:00","summary":"ARIN delegated statistics 2020-10-09 (produced 2020-10-09T14:00:14+00:00), after the report: allocated (dated 2014-05-13)"}]},{"event_id":"04450d5d217f951c","registry":"ARIN","report_date":"2014-05-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 144.172.128.0-144.172.255.255","resource_type":"ipv4","resource":"144.172.128.0/17","start":"144.172.128.0","end":"144.172.255.255","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":"2026-10-13T23:51:12+00:00","page":"https://rirtracker.com/ip/144.172.128.0-144.172.255.255/#e-04450d5d217f951c","report_page":"https://rirtracker.com/arin/reports/2014-05-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.172.128.0-144.172.255.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2014-05-12 and allocated (dated 2014-05-13) on 2014-05-14. 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/2014-May/001980.html","retrieved_at":"2026-10-12T18:38:22+00:00","summary":"ARIN-Issued report for 2014-05-13: \"Add 144.172.128.0-144.172.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140512.gz","retrieved_at":"2026-10-12T20:16:04+00:00","summary":"ARIN delegated statistics 2014-05-12 (produced 2014-05-12T05:03:51+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140514.gz","retrieved_at":"2026-10-12T20:16:08+00:00","summary":"ARIN delegated statistics 2014-05-14 (produced 2014-05-14T05:04:18+00:00), after the report: allocated (dated 2014-05-13)"}]}],"classification_history":{"c174da14c67d0f6e":[{"raw_change_id":561092,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:51+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Le Groupe Videotron Ltee (ARIN) to Videotron Ltee (ARIN) on 2020-10-08 17:52 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"04450d5d217f951c":[{"raw_change_id":132266,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:24:38+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-05-12 and allocated (dated 2014-05-13) on 2014-05-14. The tracker saw this range released from hold on 2011-09-09 (144.172.64.0-144.172.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":132266,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:34+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-05-12 and allocated (dated 2014-05-13) on 2014-05-14. The tracker saw this range released from hold on 2011-09-09 (144.172.64.0-144.172.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":132266,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:09+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-05-12 and allocated (dated 2014-05-13) on 2014-05-14. The tracker saw this range released from hold on 2011-09-09 (144.172.64.0-144.172.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":132266,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:12+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-05-12 and allocated (dated 2014-05-13) on 2014-05-14. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2014-05-13)"}}