{"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":"66.171.64.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/66.171.64.0-66.171.79.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2011-01-26)"},"current_holder":{"rir":"ARIN","org":"Netrix LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":43112,"date":"2026-03-09T19:13:52Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Ricoh USA, Inc.","recipient_org":"Netrix LLC","range":"66.171.64.0/20","log":"ARIN"},{"id":29201,"date":"2022-09-15T20:35:05Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"MINDSHIFT TECHNOLOGIES","recipient_org":"Ricoh USA, Inc.","range":"66.171.64.0/20","log":"ARIN"},{"id":12587,"date":"2018-03-14T20:15:32Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Invision.com, Inc.","recipient_org":"MINDSHIFT TECHNOLOGIES","range":"66.171.64.0/20","log":"ARIN"}],"events":[{"event_id":"751c03ab5ccc6238","registry":"ARIN","report_date":"2026-03-09","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"66.171.64.0/20","start":"66.171.64.0","end":"66.171.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Ricoh USA, Inc.","recipient_organization":"Netrix LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:26+00:00","page":"https://rirtracker.com/ip/66.171.64.0-66.171.79.255/#e-751c03ab5ccc6238","report_page":"https://rirtracker.com/arin/reports/2026-03-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.171.64.0-66.171.79.255.json","observed":"Merger/acquisition: Ricoh USA, Inc. (ARIN) to Netrix LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Ricoh USA, Inc. (ARIN) to Netrix LLC (ARIN) on 2026-03-09 19:13 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 2026-03-09 19:13 UTC, Ricoh USA, Inc. (ARIN) to Netrix LLC (ARIN); resources moved: 66.171.64.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260308","retrieved_at":"2026-10-09T18:57:49+00:00","summary":"ARIN delegated statistics 2026-03-08 (produced 2026-03-08T13:00:48+00:00), before the report: allocated (dated 2011-01-26)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260310","retrieved_at":"2026-10-09T18:57:56+00:00","summary":"ARIN delegated statistics 2026-03-10 (produced 2026-03-10T13:00:51+00:00), after the report: allocated (dated 2011-01-26)"}]},{"event_id":"dac6a1c55514a9a8","registry":"ARIN","report_date":"2022-09-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"66.171.64.0/20","start":"66.171.64.0","end":"66.171.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"MINDSHIFT TECHNOLOGIES","recipient_organization":"Ricoh USA, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:04+00:00","page":"https://rirtracker.com/ip/66.171.64.0-66.171.79.255/#e-dac6a1c55514a9a8","report_page":"https://rirtracker.com/arin/reports/2022-09-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.171.64.0-66.171.79.255.json","observed":"Merger/acquisition: MINDSHIFT TECHNOLOGIES (ARIN) to Ricoh USA, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from MINDSHIFT TECHNOLOGIES (ARIN) to Ricoh USA, Inc. (ARIN) on 2022-09-15 20:35 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 2022-09-15 20:35 UTC, MINDSHIFT TECHNOLOGIES (ARIN) to Ricoh USA, Inc. (ARIN); resources moved: 66.171.64.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220914.gz","retrieved_at":"2026-10-12T23:07:47+00:00","summary":"ARIN delegated statistics 2022-09-14 (produced 2022-09-14T13:00:11+00:00), before the report: allocated (dated 2011-01-26)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220916.gz","retrieved_at":"2026-10-12T23:07:52+00:00","summary":"ARIN delegated statistics 2022-09-16 (produced 2022-09-16T13:00:11+00:00), after the report: allocated (dated 2011-01-26)"}]},{"event_id":"bb92b7e3bfaf7184","registry":"ARIN","report_date":"2018-03-14","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"66.171.64.0/20","start":"66.171.64.0","end":"66.171.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Invision.com, Inc.","recipient_organization":"MINDSHIFT TECHNOLOGIES","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:34+00:00","page":"https://rirtracker.com/ip/66.171.64.0-66.171.79.255/#e-bb92b7e3bfaf7184","report_page":"https://rirtracker.com/arin/reports/2018-03-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.171.64.0-66.171.79.255.json","observed":"Merger/acquisition: Invision.com, Inc. (ARIN) to MINDSHIFT TECHNOLOGIES (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Invision.com, Inc. (ARIN) to MINDSHIFT TECHNOLOGIES (ARIN) on 2018-03-14 20:15 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 2018-03-14 20:15 UTC, Invision.com, Inc. (ARIN) to MINDSHIFT TECHNOLOGIES (ARIN); resources moved: 66.171.64.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180313.gz","retrieved_at":"2026-10-12T21:43:04+00:00","summary":"ARIN delegated statistics 2018-03-13 (produced 2018-03-13T05:12:34+00:00), before the report: allocated (dated 2011-01-26)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180315.gz","retrieved_at":"2026-10-12T21:43:09+00:00","summary":"ARIN delegated statistics 2018-03-15 (produced 2018-03-15T05:10:58+00:00), after the report: allocated (dated 2011-01-26)"}]},{"event_id":"48ee0b4c58539e39","registry":"ARIN","report_date":"2011-01-26","source":"arin_issued","raw_action":"ADD","raw_line":"Add 66.171.64.0-66.171.79.255","resource_type":"ipv4","resource":"66.171.64.0/20","start":"66.171.64.0","end":"66.171.79.255","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":"2026-10-13T23:50:51+00:00","page":"https://rirtracker.com/ip/66.171.64.0-66.171.79.255/#e-48ee0b4c58539e39","report_page":"https://rirtracker.com/arin/reports/2011-01-26/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.171.64.0-66.171.79.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-01-25 and allocated (dated 2011-01-26) on 2011-01-27. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-01-20 (66.171.0.0-66.171.255.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2011-January/000772.html","retrieved_at":"2026-10-12T18:36:57+00:00","summary":"ARIN-Issued report for 2011-01-26: \"Add 66.171.64.0-66.171.79.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110125.gz","retrieved_at":"2026-10-12T19:15:39+00:00","summary":"ARIN delegated statistics 2011-01-25, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110127.gz","retrieved_at":"2026-10-12T19:15:43+00:00","summary":"ARIN delegated statistics 2011-01-27, after the report: allocated (dated 2011-01-26)"}]}],"classification_history":{"751c03ab5ccc6238":[{"raw_change_id":575605,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:26+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Ricoh USA, Inc. (ARIN) to Netrix LLC (ARIN) on 2026-03-09 19:13 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."}],"dac6a1c55514a9a8":[{"raw_change_id":566430,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:04+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from MINDSHIFT TECHNOLOGIES (ARIN) to Ricoh USA, Inc. (ARIN) on 2022-09-15 20:35 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."}],"bb92b7e3bfaf7184":[{"raw_change_id":554208,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:34+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Invision.com, Inc. (ARIN) to MINDSHIFT TECHNOLOGIES (ARIN) on 2018-03-14 20:15 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."}],"48ee0b4c58539e39":[{"raw_change_id":122533,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:13:13+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-01-25 and allocated (dated 2011-01-26) on 2011-01-27. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-01-20 (66.171.0.0-66.171.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":122533,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:18+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-01-25 and allocated (dated 2011-01-26) on 2011-01-27. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-01-20 (66.171.0.0-66.171.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":122533,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:51+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-01-25 and allocated (dated 2011-01-26) on 2011-01-27. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-01-20 (66.171.0.0-66.171.255.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":122533,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:51+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-01-25 and allocated (dated 2011-01-26) on 2011-01-27. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-01-20 (66.171.0.0-66.171.255.255), so it appears to have been issued again from ARIN's pool."}]},"arin_statistics_now":{"status":"allocated (dated 2011-01-26)"}}