{"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":"AS3943","resource_type":"asn","page":"https://rirtracker.com/asn/3943/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2012-08-06)"},"current_holder":{"rir":"ARIN","org":"CISCO SYSTEMS, INC.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":3543,"date":"2023-09-12T19:59:44Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Cisco Systems, Inc.","recipient_org":"CISCO SYSTEMS, INC.","range":"AS3943","log":"ARIN"},{"id":1,"date":"2012-08-06T17:46:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"David Meyer/University of Oregon","recipient_org":"Cisco Systems, Inc.","range":"AS3943","log":"ARIN"}],"events":[{"event_id":"441c77f4b0a7e300","registry":"ARIN","report_date":"2023-09-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS3943","start":3943,"end":3943,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Cisco Systems, Inc.","recipient_organization":"CISCO SYSTEMS, INC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:10+00:00","page":"https://rirtracker.com/asn/3943/#e-441c77f4b0a7e300","report_page":"https://rirtracker.com/arin/reports/2023-09-12/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/3943.json","observed":"Merger/acquisition: Cisco Systems, Inc. (ARIN) to CISCO SYSTEMS, INC. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cisco Systems, Inc. (ARIN) to CISCO SYSTEMS, INC. (ARIN) on 2023-09-12 19:59 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 2023-09-12 19:59 UTC, Cisco Systems, Inc. (ARIN) to CISCO SYSTEMS, INC. (ARIN); resources moved: AS3943"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230911.gz","retrieved_at":"2026-10-12T23:26:56+00:00","summary":"ARIN delegated statistics 2023-09-11 (produced 2023-09-11T13:00:13+00:00), before the report: assigned (dated 2012-08-06)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230913.gz","retrieved_at":"2026-10-12T23:27:01+00:00","summary":"ARIN delegated statistics 2023-09-13 (produced 2023-09-13T13:00:13+00:00), after the report: assigned (dated 2012-08-06)"}]},{"event_id":"03b4c91263b4724c","registry":"ARIN","report_date":"2012-08-06","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS3943","start":3943,"end":3943,"classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"David Meyer/University of Oregon","recipient_organization":"Cisco Systems, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:22+00:00","page":"https://rirtracker.com/asn/3943/#e-03b4c91263b4724c","report_page":"https://rirtracker.com/arin/reports/2012-08-06/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/3943.json","observed":"Transfer: David Meyer/University of Oregon (ARIN) to Cisco Systems, Inc. (ARIN)","explanation":"ARIN's transfer log records a transfer from David Meyer/University of Oregon (ARIN) to Cisco Systems, Inc. (ARIN) on 2012-08-06 17:46 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: RESOURCE_TRANSFER on 2012-08-06 17:46 UTC, David Meyer/University of Oregon (ARIN) to Cisco Systems, Inc. (ARIN); resources moved: AS3943"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120805.gz","retrieved_at":"2026-10-12T19:46:47+00:00","summary":"ARIN delegated statistics 2012-08-05, before the report: allocated (dated 2001-05-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120807.gz","retrieved_at":"2026-10-12T19:46:52+00:00","summary":"ARIN delegated statistics 2012-08-07, after the report: allocated (dated 2001-05-18)"}]}],"classification_history":{"441c77f4b0a7e300":[{"raw_change_id":569147,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:10+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cisco Systems, Inc. (ARIN) to CISCO SYSTEMS, INC. (ARIN) on 2023-09-12 19:59 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."}],"03b4c91263b4724c":[{"raw_change_id":549186,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:22+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from David Meyer/University of Oregon (ARIN) to Cisco Systems, Inc. (ARIN) on 2012-08-06 17:46 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."}]},"arin_statistics_now":{"status":"assigned (dated 2012-08-06)"}}