HomePrefix Lookup205.240.0.0/13

205.240.0.0/13

πŸ‡ΊπŸ‡Έ
CIDR
205.240.0.0/13
IP Version
IPv4
Addresses
524.2K
Mask
/13 (255.248.0.0)
Country
πŸ‡ΊπŸ‡Έ United States
City
BOULDER
RIR
ARIN
Status
allocated
Allocated
4/24/1995

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
205.240.0.0/13AS174COGENT-174 - Cogent Communications, LLCNo ROA
ARIN
5/30/2026

Covering Prefix

105 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
205.245.0.0/18AS2379CENTURYLINK-LEGACY-EMBARQ-WNPK - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.241.160.0/19AS1299TWELVE99 Arelion Sweden ABNo ROAβ€”5/30/2026
205.241.128.0/19AS1299TWELVE99 Arelion Sweden ABNo ROAβ€”5/30/2026
205.241.224.0/19AS1299TWELVE99 Arelion Sweden ABNo ROAβ€”5/30/2026
205.241.192.0/19AS1299TWELVE99 Arelion Sweden ABNo ROAβ€”5/30/2026
205.244.96.0/19AS5778CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.247.0.0/20AS3257GTT-BACKBONE GTT Communications Inc.No ROAβ€”5/30/2026
205.240.0.0/20AS3364CSDCO-AS - Computer Systems Design CompanyNo ROAβ€”5/30/2026
205.241.240.0/20AS4637ASN-TELSTRA-GLOBAL - Telstra GlobalNo ROAβ€”5/30/2026
205.240.240.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.240.192.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.240.208.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.240.224.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.241.64.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.241.80.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.241.96.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.241.112.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.246.112.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.246.96.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.246.80.0/20AS6079RCN-AS - RCNNo ROAβ€”5/30/2026
205.246.64.0/20AS6079RCN-AS - RCN Validβ€”5/30/2026
205.240.128.0/20AS8025BRIGHTOK-AS - BrightNet OklahomaNo ROAβ€”5/30/2026
205.245.96.0/21AS5778CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.244.200.0/21AS5778CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.242.184.0/21AS6428CDM - CDMNo ROAβ€”5/30/2026
205.243.120.0/21AS14828HBCI-1999TA - Hiawatha Broadband Communications, IncNo ROAβ€”5/30/2026
205.243.64.0/21AS40508MID-AMERICA-NAZARENE-UNIVERSITY - Mid America Nazarene UniversityNo ROAβ€”5/30/2026
205.240.36.0/22AS209CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.240.32.0/22AS5778CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.247.24.0/22AS11140BEHRPROCESS - Behr ProcessNo ROAβ€”5/30/2026
205.244.148.0/22AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.243.116.0/22AS14828HBCI-1999TA - Hiawatha Broadband Communications, IncNo ROAβ€”5/30/2026
205.243.252.0/22AS17046ACTION-COMM - Action Communications, Inc.No ROAβ€”5/30/2026
205.247.20.0/22AS21547OXNET - FirstLight Fiber, Inc. Invalidβ€”5/30/2026
205.247.112.0/22AS21547OXNET - FirstLight Fiber, Inc. Invalidβ€”5/30/2026
205.244.194.0/23AS209CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.240.42.0/23AS6222CENTURYLINK-LEGACY-EMBARQ-CLTN - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.242.92.0/23AS6428CDM - CDMNo ROAβ€”5/30/2026
205.243.72.0/23AS11924MONTANA-OPTICOM - Montana Opticom, LLCNo ROAβ€”5/30/2026
205.242.230.0/23AS13676ILAND-AS - GoNetSpeedNo ROAβ€”5/30/2026
205.244.150.0/23AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.244.148.0/23AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.243.114.0/23AS14828HBCI-1999TA - Hiawatha Broadband Communications, IncNo ROAβ€”5/30/2026
205.243.112.0/23AS17301FASTENAL - Fastenal CompanyNo ROAβ€”5/30/2026
205.240.34.0/23AS19901BRIGHTSPEED - BrightspeedNo ROAβ€”5/30/2026
205.241.51.0/24AS174COGENT-174 - Cogent Communications, LLCNo ROAβ€”5/30/2026
205.243.61.0/24AS174COGENT-174 - Cogent Communications, LLCNo ROAβ€”5/30/2026
205.246.165.0/24AS174COGENT-174 - Cogent Communications, LLCNo ROAβ€”5/30/2026
205.247.20.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.21.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.22.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.23.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.112.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.113.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.114.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.247.115.0/24AS174COGENT-174 - Cogent Communications, LLC Invalidβ€”5/30/2026
205.245.41.0/24AS209CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.245.2.0/24AS209CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.245.44.0/24AS2379CENTURYLINK-LEGACY-EMBARQ-WNPK - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.247.251.0/24AS6222CENTURYLINK-LEGACY-EMBARQ-CLTN - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.247.247.0/24AS6222CENTURYLINK-LEGACY-EMBARQ-CLTN - CenturyLink Communications, LLCNo ROAβ€”5/30/2026
205.242.181.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.186.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.185.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.184.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.183.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.182.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.180.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.179.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.178.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.177.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.176.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.93.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.92.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.191.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.190.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.189.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.188.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.242.187.0/24AS6428CDM - CDMNo ROAβ€”5/30/2026
205.247.26.0/24AS11140BEHRPROCESS - Behr ProcessNo ROAβ€”5/30/2026
205.247.31.0/24AS11722WFC-ASN - Slic Network Solutions, IncNo ROAβ€”5/30/2026
205.242.230.0/24AS13676ILAND-AS - GoNetSpeedNo ROAβ€”5/30/2026
205.244.151.0/24AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.244.150.0/24AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.244.149.0/24AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.244.148.0/24AS14813BB-COLUMBUS - Columbus Telecommunications (Barbados) LimitedNo ROAβ€”5/30/2026
205.247.31.0/24AS15065SLIC-COM-INTERNET - Slic Network Solutions, IncNo ROAβ€”5/30/2026
205.245.89.0/24AS18571WESTERNRESERVEGROUP - The Western Reserve Mutual Casualty CompanyNo ROAβ€”5/30/2026
205.243.23.0/24AS19105FIRSTBANK - FirstBankNo ROAβ€”5/30/2026
205.246.18.0/24AS19643NETSYN - Network Synergy CorporationNo ROAβ€”5/30/2026
205.241.40.0/24AS23005SWITCH-LTD - SWITCH, LTDNo ROAβ€”5/30/2026
205.247.204.0/24AS26077NEXTLINK-TEXAS - Nextlink BroadbandNo ROAβ€”5/30/2026
205.243.71.0/24AS40508MID-AMERICA-NAZARENE-UNIVERSITY - Mid America Nazarene UniversityNo ROAβ€”5/30/2026
205.246.13.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.9.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.10.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.11.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.12.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.15.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.8.0/24AS46536VIASAT-CARLSBAD - ViaSat, Inc. Invalidβ€”5/30/2026
205.246.28.0/24AS46567BORDER-STATES-INDUSTRIES - Border States IndustriesNo ROAβ€”5/30/2026
205.243.61.0/24AS328867Corebach Backbone SARL - Corebach Backbone SARLNo ROAβ€”5/30/2026
205.241.44.0/24AS396411MICROPACT-ASH-DC - MicroPact Global, IncNo ROAβ€”5/30/2026
205.245.84.0/24AS400807BMU-GW-01 - BRYAN MUNICIPAL UTILITIESNo ROAβ€”5/30/2026
205.245.85.0/24AS400807BMU-GW-01 - BRYAN MUNICIPAL UTILITIESNo ROAβ€”5/30/2026

IRR Route Objects

2
OriginRegistryMaintainerModified
AS174ARINMNT-COGC12/23/2025
AS1239ARINMNT-COGC12/23/2025
Geolocation
CountryπŸ‡ΊπŸ‡ΈUnited StatesUS
CityBOULDER
GEThttps://api.ipctl.io/v1/prefix/205.240.0.0/13

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/205.240.0.0/13" | jq