# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # # start NetRange: 205.240.0.0 - 205.247.255.255 CIDR: 205.240.0.0/13 NetName: COGENT-205-240-0 NetHandle: NET-205-240-0-0-1 Parent: NET205 (NET-205-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Cogent Communications, LLC (COGC) RegDate: 1995-04-24 Updated: 2025-12-23 Ref: https://rdap.arin.net/registry/ip/205.240.0.0 OrgName: Cogent Communications, LLC OrgId: COGC Address: 2450 N Street NW City: Washington StateProv: DC PostalCode: 20037 Country: US RegDate: 2000-05-30 Updated: 2025-09-23 Comment: Geofeed https://geofeed.cogentco.com/geofeed.csv Ref: https://rdap.arin.net/registry/entity/COGC ReferralServer: rwhois://rwhois.cogentco.com:4321 OrgAbuseHandle: COGEN-ARIN OrgAbuseName: Cogent Abuse OrgAbusePhone: +1-877-875-4311 OrgAbuseEmail: abuse@cogentco.com OrgAbuseRef: https://rdap.arin.net/registry/entity/COGEN-ARIN OrgTechHandle: IPALL-ARIN OrgTechName: IP Allocation OrgTechPhone: +1-877-875-4311 OrgTechEmail: ipalloc@cogentco.com OrgTechRef: https://rdap.arin.net/registry/entity/IPALL-ARIN OrgNOCHandle: ZC108-ARIN OrgNOCName: Cogent Communications OrgNOCPhone: +1-877-875-4311 OrgNOCEmail: noc@cogentco.com OrgNOCRef: https://rdap.arin.net/registry/entity/ZC108-ARIN # end # start NetRange: 205.240.0.0 - 205.240.15.255 CIDR: 205.240.0.0/20 NetName: SPRINT-CDF00F NetHandle: NET-205-240-0-0-2 Parent: COGENT-205-240-0 (NET-205-240-0-0-1) NetType: Reallocated OriginAS: Organization: Computer Systems Design Company (CSD) RegDate: 1995-04-25 Updated: 2014-08-18 Ref: https://rdap.arin.net/registry/ip/205.240.0.0 OrgName: Computer Systems Design Company OrgId: CSD Address: 735 Highland Avenue City: Boulder StateProv: CO PostalCode: 80302 Country: US RegDate: 1994-12-20 Updated: 2024-11-04 Ref: https://rdap.arin.net/registry/entity/CSD OrgAbuseHandle: JN20-ARIN OrgAbuseName: Nebel, John OrgAbusePhone: +1-303-447-8025 OrgAbuseEmail: domains@csdco.com OrgAbuseRef: https://rdap.arin.net/registry/entity/JN20-ARIN OrgNOCHandle: JN20-ARIN OrgNOCName: Nebel, John OrgNOCPhone: +1-303-447-8025 OrgNOCEmail: domains@csdco.com OrgNOCRef: https://rdap.arin.net/registry/entity/JN20-ARIN OrgTechHandle: JN24-ARIN OrgTechName: Nebel, John OrgTechPhone: +1-303-618-7345 OrgTechEmail: john.nebel@csd.net OrgTechRef: https://rdap.arin.net/registry/entity/JN24-ARIN RAbuseHandle: JN24-ARIN RAbuseName: Nebel, John RAbusePhone: +1-303-618-7345 RAbuseEmail: john.nebel@csd.net RAbuseRef: https://rdap.arin.net/registry/entity/JN24-ARIN # end # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # Found a referral to rwhois.cogentco.com:4321. %rwhois V-1.5:0010b0:00 rwhois.cogentco.com (CGNT rwhoisd 1.2.2) network:ID:NET4-CDF0000014 network:Network-Name:NET4-CDF0000014 network:IP-Network:205.240.0.0/20 network:Org-Name:COMPUTER SYSTEMS DESIGNS network:Street-Address:735 HIGHLAND AVENUE network:City:BOULDER network:State:CO network:Country:US network:Postal-Code:80302 network:Tech-Contact:ZC108-ARIN network:Updated:2024-12-13 17:18:57 %ok