1. All IP Ranges
  2. 205.0.0.0/8
  3. AS174  | 205.240.0.0/13

205.240.0.0/13

AS174  ·  Cogent Communications, LLC

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

Country United States
Domain cogentco.com
ASN AS174
Registry ARIN
ID COGENT-205-240-0

WHOIS Details

NetHandle:      NET-205-240-0-0-1
OrgID:          COGC
Parent:         NET-205-0-0-0-0
NetName:        COGENT-205-240-0
NetRange:       205.240.0.0 - 205.247.255.255
NetType:        allocation
RegDate:        1995-04-24
Updated:        2025-12-23
Source:         ARIN


OrgID:          COGC
OrgName:        Cogent Communications, LLC
CanAllocate:    
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
RegDate:        2000-05-30
Updated:        2025-09-23
ReferralServer: rwhois://rwhois.cogentco.com:4321
OrgAdminHandle: IPALL-ARIN
OrgTechHandle:  IPALL-ARIN
OrgAbuseHandle: COGEN-ARIN
OrgNOCHandle:   ZC108-ARIN
Source:         ARIN


POCHandle:      ZC108-ARIN
IsRole:         Y
LastName:       Cogent Communications
FirstName:      
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2001-01-24
Updated:        2025-07-08
OfficePhone:    +1-877-875-4311
Mailbox:        noc@cogentco.com
Source:         ARIN


POCHandle:      COGEN-ARIN
IsRole:         Y
LastName:       Cogent Abuse
FirstName:      
Street:         2450 N street, NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2002-11-13
Updated:        2025-07-08
OfficePhone:    +1-877-875-4311
Mailbox:        abuse@cogentco.com
Source:         ARIN


POCHandle:      IPALL-ARIN
IsRole:         Y
LastName:       IP Allocation
FirstName:      
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2002-11-13
Updated:        2025-07-08
OfficePhone:    +1-877-875-4311
Mailbox:        ipalloc@cogentco.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that are contained by 205.240.0.0/13

Range ASN Company Num of IPs
205.241.51.0/24 AS174 National Academy of Sciences 256
205.247.31.0/24 AS15065 SLIC NETWORK SOLUTIONS, INC. 256
205.243.61.0/24 AS174 Cogent Communications - IPENG 256
205.243.61.0/24 AS174 Cogent Communications - IPENG 256
205.246.165.0/24 AS174 MA Labs 256
205.245.89.0/24 AS18571 Western Reserve Group 256
205.243.23.0/24 AS19105 FIRST BANK DATA CORP 256
205.246.18.0/24 AS19643 Network Synergy 256
205.241.40.0/24 AS23005 Omnitracs, Inc. 256
205.242.190.0/24 AS6428 National Benevolent Association 256
205.243.61.0/24 AS328867 Cogent Communications - IPENG 256
205.243.61.0/24 AS328867 Cogent Communications - IPENG 256
205.243.79.0/24 AS36050 Fifth Third Bank 256
205.242.189.0/24 AS6428 Midwest Medical Supply 256
205.242.20.0/23 AS174 Cogent Communications - IPENG 512
205.243.72.0/23 AS11924 Bridgeband Communications 512
205.242.92.0/23 AS6428 Primary Network 512
205.247.24.0/22 AS11140 Behr Process 1,024
205.244.148.0/22 AS14813 1,024
205.243.252.0/22 AS17046 Action Communications, Inc. 1,024
205.240.128.0/20 AS8025 CHICKASAW TELEPHONE 4,096
205.247.0.0/20 AS3257 I-2000, Inc. 4,096

Nearby Ranges

BGP prefixes that overlap with 205.0.0.0/8

Range ASN Company Num of IPs
205.128.0.0/14 AS3356 Level 3 Parent, LLC 262,144
205.180.0.0/14 AS3738 Level 3 Parent, LLC 262,144
205.168.0.0/14 AS209 CenturyLink Communications, LLC 262,144
205.168.0.0/14 AS23458 CenturyLink Communications, LLC 262,144
205.180.0.0/14 AS26478 Level 3 Parent, LLC 262,144
205.224.0.0/14 AS328867 Level 3 Parent, LLC 262,144
205.168.0.0/14 AS32932 CenturyLink Communications, LLC 262,144
205.228.0.0/14 AS7270 Verizon Business 262,144
205.228.0.0/14 AS701 Verizon Business 262,144
205.168.0.0/14 AS18453 CenturyLink Communications, LLC 262,144
205.180.0.0/14 AS27495 Level 3 Parent, LLC 262,144
205.224.0.0/14 AS3356 Level 3 Parent, LLC 262,144
205.180.0.0/14 AS3356 Level 3 Parent, LLC 262,144
205.168.0.0/14 AS3356 CenturyLink Communications, LLC 262,144
205.168.0.0/14 AS398895 CenturyLink Communications, LLC 262,144
205.168.0.0/14 AS401606 CenturyLink Communications, LLC 262,144
205.160.0.0/14 AS174 Cogent Communications, LLC 262,144
205.168.0.0/14 AS10753 CenturyLink Communications, LLC 262,144
205.198.0.0/15 AS174 Cogent Communications, LLC 131,072
205.218.0.0/15 AS3561 CenturyLink Communications, LLC 131,072
205.250.0.0/16 AS852 TELUS Communications Inc. 65,536
205.212.0.0/16 AS2914 NTT America, Inc. 65,536
205.152.0.0/16 AS6389 AT&T Enterprises, LLC 65,536
205.146.0.0/16 AS2914 NTT America, Inc. 65,536
205.206.0.0/16 AS852 TELUS Communications Inc. 65,536
205.177.0.0/16 AS63199 PCCW Global, Inc. 65,536
205.213.0.0/16 AS59 WiscNet 65,536
205.252.0.0/16 AS395753 PCCW Global, Inc. 65,536
205.205.0.0/16 AS701 Verizon Business 65,536
205.177.0.0/16 AS42475 PCCW Global, Inc. 65,536
205.213.0.0/16 AS36723 WiscNet 65,536
205.177.0.0/16 AS20263 PCCW Global, Inc. 65,536
205.133.0.0/16 AS600 OARnet 65,536
205.200.0.0/16 AS7122 Bell Canada 65,536
205.177.0.0/16 AS37146 PCCW Global, Inc. 65,536
205.213.0.0/16 AS40347 WiscNet 65,536
205.155.0.0/16 AS257 CENIC 65,536
205.213.0.0/16 AS2381 WiscNet 65,536
205.133.0.0/16 AS3112 OARnet 65,536
205.252.0.0/16 AS30967 PCCW Global, Inc. 65,536
205.152.0.0/16 AS2386 AT&T Enterprises, LLC 65,536
205.150.0.0/16 AS701 Verizon Business 65,536
205.136.0.0/16 AS3561 CENTURYLINK, INC. 65,536
205.197.0.0/16 AS701 Verizon Business 65,536
205.202.0.0/16 AS11714 Network Nebraska 65,536

Hosted domains

There are 227 domain names hosted across 138 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
205.242.83.191 txian.com 11
205.245.187.166 gtweed.be 8
205.243.75.174 reducea1ctherapy.com 5
205.242.10.114 mielecareers.com 5
205.241.27.60 econometrics-intl.com 4
205.246.6.21 software4trucks.com 4
205.247.218.35 hsl-library.com 4
205.243.144.69 honeststatements.org 3
205.242.12.159 bishoppaulsloverde.net 3
205.245.63.93 insightfinancialcu.org 3
205.242.83.24 afcfastcash.com 3
205.242.12.158 bishoploverde.com 3
205.245.65.2 internetecheck.com 3
205.247.218.72 gethexy.com 3
205.243.75.141 aboutwelchol.com 3
205.246.192.90 uaga-convergys.com 2
205.241.44.246 saveyourradio.com 2
205.247.219.162 mccannerickson.com 2
205.246.0.84 ccahirenet.com 2
205.246.192.101 lnlcareers.net 2

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

491 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
205.247.26.2 AS11140 Behr Process 1.76ms from Los Angeles, US
205.240.3.58 AS174 Cogent Communications, LLC 1.29ms from Denver, US
205.244.194.128 AS174 Cogent Communications, LLC 11.98ms from Detroit, US
205.243.114.239 AS14828 Hiawatha Broadband Communications, Inc 5.73ms from Minneapolis, US
205.243.73.48 AS11924 Montana Opticom, LLC 15.19ms from Seattle, US
205.245.6.45 AS174 Cogent Communications, LLC 5.06ms from Miami, US
205.245.54.237 AS174 Cogent Communications, LLC 5.02ms from Miami, US
205.247.199.65 AS174 Cogent Communications, LLC 1.12ms from Los Angeles, US
205.243.121.65 AS14828 Hiawatha Broadband Communications, Inc 6.26ms from Minneapolis, US
205.243.123.1 AS14828 Hiawatha Broadband Communications, Inc 6.73ms from Minneapolis, US
205.240.45.31 AS174 Cogent Communications, LLC 8.21ms from Ashburn, US
205.245.27.64 AS174 Cogent Communications, LLC 6.33ms from Atlanta, US
205.243.112.61 AS174 Cogent Communications, LLC 4.53ms from Minneapolis, US
205.247.15.161 AS3257 GTT Communications Inc. 0.44ms from New York City, US
205.245.52.32 AS174 Cogent Communications, LLC 6.01ms from Atlanta, US
205.247.24.2 AS11140 Behr Process 5.73ms from Los Angeles, US
205.245.7.41 AS174 Cogent Communications, LLC 5.55ms from Miami, US
205.245.63.157 AS174 Cogent Communications, LLC 5.57ms from Miami, US
205.243.120.66 AS14828 Hiawatha Broadband Communications, Inc 5.65ms from Minneapolis, US
205.242.20.1 AS174 Cogent Communications, LLC 1.17ms from Phoenix, US
205.242.92.6 AS6428 CDM 0.89ms from St. Louis, US
205.243.65.1 AS40508 Mid America Nazarene University 1.39ms from Kansas City, US
205.243.71.225 AS40508 Mid America Nazarene University 1.36ms from Kansas City, US
205.240.35.1 AS174 Cogent Communications, LLC 8.20ms from Ashburn, US
205.244.149.235 AS14813 Columbus Telecommunications (Barbados) Limited 2.44ms from Bridgetown, BB

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
131.96.160.221 AS10631 Georgia State University 0.20ms from Atlanta, US
144.6.100.13 AS4764 Aussie Broadband 0.56ms from Brisbane, AU
71.75.235.237 AS11426 Charter Communications Inc 6.48ms from Charlotte, US
71.65.139.173 AS11426 Charter Communications Inc 9.21ms from Charlotte, US
75.118.130.205 AS11776 Breezeline 13.76ms from Chicago, US
212.226.183.157 AS719 Elisa Oyj 0.65ms from Helsinki, FI
39.116.212.61 AS9318 SK Broadband Co Ltd 5.54ms from Incheon, KR
178.174.78.253 AS3303 Swisscom (Switzerland) Ltd 1.03ms from Lausanne, CH
109.152.155.237 AS2856 British Telecommunications PLC 9.81ms from London, GB
86.137.34.221 AS2856 British Telecommunications PLC 5.80ms from London, GB
31.54.137.221 AS2856 British Telecommunications PLC 6.90ms from London, GB
213.98.149.253 AS3352 TELEFONICA DE ESPANA S.A.U. 8.51ms from Madrid, ES
194.207.242.125 AS12390 KCOM GROUP LIMITED 3.25ms from Manchester, GB
143.48.157.125 AS13748 Cold Spring Harbor Laboratory 1.49ms from New York City, US
186.207.116.109 AS28573 Claro NXT Telecomunicacoes Ltda 8.79ms from Sao Paulo, BR
121.145.203.109 AS4766 Korea Telecom 6.13ms from Seoul, KR
8.211.164.125 AS45102 Alibaba (US) Technology Co., Ltd. 1.29ms from Tokyo, JP
46.171.75.141 AS5617 Orange Polska Spolka Akcyjna 1.21ms from Wrocław, PL
221.11.48.13 AS4837 CHINA UNICOM China169 Backbone 6.47ms from Xi'an, CN
32.208.21.157 AS46690 Southern New England Telephone Company and SNET America, Inc. 14.74ms from Ashburn, US
158.94.146.45 AS6079 RCN 1.50ms from Ashburn, US
173.184.42.189 AS7029 Windstream Communications LLC 6.68ms from Atlanta, US
181.14.134.29 AS7303 Telecom Argentina S.A. 2.08ms from Buenos Aires, AR
220.170.36.77 AS4134 CHINANET-BACKBONE 2.17ms from Changsha, CN
23.28.183.109 AS12083 WideOpenWest Finance LLC 16.36ms from Chicago, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f3 -m9 205.247.171.149
traceroute to 205.247.171.149 (205.247.171.149): 9 hops max, 52 byte packets
3 [AS3356] 4.71.199.86 20.77 ms
4 [AS5650] 74.41.143.106 58.724 ms
5 [AS5650] 74.40.10.110 20.303 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Casper, US
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs