{"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":"205.143.44.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/205.143.44.0-205.143.45.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2017-10-06)"},"current_holder":{"rir":"ARIN","org":"CONVERGEONE HOLDINGS, INC.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":40144,"date":"2025-04-23T14:44:03Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ConvergeOne Holdings Corp","recipient_org":"CONVERGEONE HOLDINGS, INC.","range":"205.143.44.0/23","log":"ARIN"}],"events":[{"event_id":"55296b3857ec9c81","registry":"ARIN","report_date":"2025-04-23","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"205.143.44.0/23","start":"205.143.44.0","end":"205.143.45.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"ConvergeOne Holdings Corp","recipient_organization":"CONVERGEONE HOLDINGS, INC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:21+00:00","page":"https://rirtracker.com/ip/205.143.44.0-205.143.45.255/#e-55296b3857ec9c81","report_page":"https://rirtracker.com/arin/reports/2025-04-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.143.44.0-205.143.45.255.json","observed":"Merger/acquisition: ConvergeOne Holdings Corp (ARIN) to CONVERGEONE HOLDINGS, INC. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from ConvergeOne Holdings Corp (ARIN) to CONVERGEONE HOLDINGS, INC. (ARIN) on 2025-04-23 14:44 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 2025-04-23 14:44 UTC, ConvergeOne Holdings Corp (ARIN) to CONVERGEONE HOLDINGS, INC. (ARIN); resources moved: 205.143.44.0/23"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250422.gz","retrieved_at":"2026-10-12T23:58:35+00:00","summary":"ARIN delegated statistics 2025-04-22 (produced 2025-04-22T13:01:09+00:00), before the report: allocated (dated 2017-10-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250424.gz","retrieved_at":"2026-10-12T23:58:40+00:00","summary":"ARIN delegated statistics 2025-04-24 (produced 2025-04-24T13:01:08+00:00), after the report: allocated (dated 2017-10-06)"}]},{"event_id":"4dd66eea1e187cc0","registry":"ARIN","report_date":"2017-10-06","source":"arin_issued","raw_action":"ADD","raw_line":"Add 205.143.44.0-205.143.45.255","resource_type":"ipv4","resource":"205.143.44.0/23","start":"205.143.44.0","end":"205.143.45.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","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":"2026-10-13T23:51:58+00:00","page":"https://rirtracker.com/ip/205.143.44.0-205.143.45.255/#e-4dd66eea1e187cc0","report_page":"https://rirtracker.com/arin/reports/2017-10-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.143.44.0-205.143.45.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. The tracker saw this range released from hold on 2015-04-01 (205.143.40.0-205.143.47.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2017-October/003222.html","retrieved_at":"2026-10-12T18:39:49+00:00","summary":"ARIN-Issued report for 2017-10-06: \"Add 205.143.44.0-205.143.45.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171005.gz","retrieved_at":"2026-10-12T21:35:22+00:00","summary":"ARIN delegated statistics 2017-10-05 (produced 2017-10-05T05:10:41+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171007.gz","retrieved_at":"2026-10-12T21:35:27+00:00","summary":"ARIN delegated statistics 2017-10-07 (produced 2017-10-07T05:11:34+00:00), after the report: assigned (dated 2017-10-06)"}]},{"event_id":"0fea0556b0e3b26a","registry":"ARIN","report_date":"2017-10-06","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 205.143.44.0-205.143.45.255","resource_type":"ipv4","resource":"205.143.44.0/23","start":"205.143.44.0","end":"205.143.45.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:58+00:00","page":"https://rirtracker.com/ip/205.143.44.0-205.143.45.255/#e-0fea0556b0e3b26a","report_page":"https://rirtracker.com/arin/reports/2017-10-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.143.44.0-205.143.45.255.json","explanation":"ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.143.44.0-205.143.45.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2017-October/003222.html","retrieved_at":"2026-10-12T18:39:49+00:00","summary":"ARIN-Issued report for 2017-10-06: \"Remove 205.143.44.0-205.143.45.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171005.gz","retrieved_at":"2026-10-12T21:35:22+00:00","summary":"ARIN delegated statistics 2017-10-05 (produced 2017-10-05T05:10:41+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171007.gz","retrieved_at":"2026-10-12T21:35:27+00:00","summary":"ARIN delegated statistics 2017-10-07 (produced 2017-10-07T05:11:34+00:00), after the report: assigned (dated 2017-10-06)"}]}],"classification_history":{"55296b3857ec9c81":[{"raw_change_id":573430,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:21+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from ConvergeOne Holdings Corp (ARIN) to CONVERGEONE HOLDINGS, INC. (ARIN) on 2025-04-23 14:44 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."}],"4dd66eea1e187cc0":[{"raw_change_id":151649,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:39:22+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. The tracker saw this range released from hold on 2015-04-01 (205.143.40.0-205.143.47.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":151649,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:09+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. The tracker saw this range released from hold on 2015-04-01 (205.143.40.0-205.143.47.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":151649,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:49+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. The tracker saw this range released from hold on 2015-04-01 (205.143.40.0-205.143.47.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":151649,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:58+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. The tracker saw this range released from hold on 2015-04-01 (205.143.40.0-205.143.47.255), so it appears to have been issued again from ARIN's pool."}],"0fea0556b0e3b26a":[{"raw_change_id":151637,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:39:22+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.143.44.0-205.143.45.255. The issuance is explained on that line."},{"raw_change_id":151637,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:09+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.143.44.0-205.143.45.255. The issuance is explained on that line."},{"raw_change_id":151637,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:49+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.143.44.0-205.143.45.255. The issuance is explained on that line."},{"raw_change_id":151637,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:58+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2017-10-05 and assigned (dated 2017-10-06) on 2017-10-07. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.143.44.0-205.143.45.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"allocated (dated 2017-10-06)"}}