1. All IP Ranges
  2. 204.0.0.0/8
  3. AS7421  | 204.204.0.0/15

204.204.0.0/15

AS7421  ·  Cogent Communications, LLC

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Summary

Country United States
Domain cogentco.com
ASN AS7421
Registry ARIN
ID COGENT-204-204-0

WHOIS Details

NetHandle:      NET-204-204-0-0-1
OrgID:          COGC
Parent:         NET-204-0-0-0-0
NetName:        COGENT-204-204-0
NetRange:       204.204.0.0 - 204.207.255.255
NetType:        allocation
RegDate:        1994-12-05
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:      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:        [email protected]
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:        [email protected]
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:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 204.0.0.0/8

Range ASN Company Num of IPs
204.180.0.0/14 AS174 Cogent Communications, LLC 262,144
204.252.0.0/14 AS11606 Verizon Business 262,144
204.212.0.0/14 AS174 Cogent Communications, LLC 262,144
204.176.0.0/14 AS9009 Verizon Business 262,144
204.252.0.0/14 AS22883 Verizon Business 262,144
204.64.0.0/14 AS1761 Texas Department of Information Resources 262,144
204.0.0.0/14 AS2914 NTT America, Inc. 262,144
204.4.0.0/14 AS174 Cogent Communications, LLC 262,144
204.248.0.0/14 AS174 Cogent Communications, LLC 262,144
204.240.0.0/14 AS174 Cogent Communications, LLC 262,144
204.200.0.0/14 AS2914 NTT America, Inc. 262,144
204.252.0.0/14 AS701 Verizon Business 262,144
204.0.0.0/14 AS203020 NTT America, Inc. 262,144
204.176.0.0/14 AS701 Verizon Business 262,144
204.176.0.0/14 AS15297 Verizon Business 262,144
204.148.0.0/14 AS701 Verizon Business 262,144
204.248.0.0/14 AS6062 Cogent Communications, LLC 262,144
204.212.0.0/14 AS6062 Cogent Communications, LLC 262,144
204.72.0.0/15 AS5006 Inteliquent, inc. 131,072
204.220.0.0/15 AS5006 Inteliquent, inc. 131,072
204.84.0.0/15 AS20197 MCNC 131,072
204.72.0.0/15 AS1347 Inteliquent, inc. 131,072
204.170.0.0/15 AS2914 NTT America, Inc. 131,072
204.84.0.0/15 AS11442 MCNC 131,072
204.70.0.0/15 AS3561 CenturyLink Communications, LLC 131,072
204.46.0.0/15 AS14298 Environmental Protection Agency 131,072
204.84.0.0/15 AS6559 MCNC 131,072
204.20.0.0/15 AS749 DoD Network Information Center 131,072
204.70.0.0/15 AS11012 CenturyLink Communications, LLC 131,072
204.84.0.0/15 AS81 MCNC 131,072
204.142.0.0/15 AS2914 NTT America, Inc. 131,072
204.186.0.0/16 AS3737 PenTeleData Inc. 65,536
204.146.0.0/16 AS203 AT&T Enterprises, LLC 65,536
204.175.0.0/16 AS398770 Verizon Business 65,536
204.125.0.0/16 AS22463 CDK Global, LLC 65,536
204.233.0.0/16 AS2914 NTT America, Inc. 65,536
204.208.0.0/16 AS721 Headquarters, USAISC 65,536
204.234.0.0/16 AS11714 Network Nebraska 65,536
204.92.0.0/16 AS22863 Verizon Business 65,536
204.224.0.0/16 AS22463 CDK Global, LLC 65,536
204.135.0.0/16 AS7726 FedEx 65,536
204.191.0.0/16 AS7861 TELUS Communications Inc. 65,536
204.102.0.0/16 AS2152 CENIC 65,536
204.42.0.0/16 AS2914 NTT America, Inc. 65,536
204.157.0.0/16 AS174 Cogent Communications, LLC 65,536
204.113.0.0/16 AS210 Utah Education Network 65,536
204.111.0.0/16 AS21759 Shenandoah Cable Television LLC 65,536
204.60.0.0/16 AS20442 AT&T Enterprises, LLC 65,536
204.196.0.0/16 AS2048 State of Louisiana Office of Technology Services 65,536
204.141.0.0/16 AS2914 NTT America, Inc. 65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Read more

Pingable IPs

131,072 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
204.204.89.1 AS7421 Cogent Communications, LLC 0.26ms from Ashburn, US
204.204.180.46 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.151.115 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.86.61 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US
204.204.220.56 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US
204.204.34.26 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.88.205 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.70.47 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US
204.204.80.62 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.155.179 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.201.39 AS7421 Cogent Communications, LLC 0.26ms from Ashburn, US
204.204.115.155 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.77.49 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US
204.204.219.39 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.97.240 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US
204.204.125.39 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.169.210 AS7421 Cogent Communications, LLC 28.27ms from Ashburn, US
204.204.75.111 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.5.229 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.36.141 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US
204.204.203.178 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.85.12 AS7421 Cogent Communications, LLC 28.29ms from Ashburn, US
204.204.26.142 AS7421 Cogent Communications, LLC 28.30ms from Ashburn, US
204.204.217.235 AS7421 Cogent Communications, LLC 28.27ms from Ashburn, US
204.204.66.250 AS7421 Cogent Communications, LLC 28.28ms from Ashburn, US

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
78.130.34.191 AS2860 NOS COMUNICACOES, S.A. 5.83ms from Braga, PT
85.135.158.255 AS8257 Slovanet a.s. 16.73ms from Bratislava, SK
76.130.169.63 AS7922 Comcast Cable Communications, LLC 2.91ms from Denver, US
112.203.36.207 AS9299 Philippine Long Distance Telephone Company 1.28ms from Manila, PH
119.17.150.207 AS4764 Aussie Broadband 1.06ms from Melbourne, AU
88.181.251.143 AS12322 Free SAS 13.78ms from Paris, FR
93.12.15.63 AS15557 Societe Francaise Du Radiotelephone - SFR SA 2.81ms from Paris, FR
218.37.208.255 AS17864 SK Broadband Co Ltd 1.99ms from Seoul, KR
222.231.2.143 AS3786 LG DACOM Corporation 1.03ms from Seoul, KR
59.29.254.111 AS4766 Korea Telecom 1.25ms from Seoul, KR
220.82.195.31 AS4766 Korea Telecom 4.51ms from Seoul, KR
211.211.198.63 AS9318 SK Broadband Co Ltd 6.63ms from Seoul, KR
105.109.157.127 AS36947 Telecom Algeria 14.66ms from Algiers, DZ
86.86.174.207 AS1136 KPN B.V. 0.96ms from Amsterdam, NL
64.186.116.207 AS22079 Alaska Power & Telephone Company 19.29ms from Anchorage, US
97.212.108.191 AS6167 Verizon Business 14.57ms from Atlanta, US
178.149.242.159 AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o. 9.21ms from Belgrade, RS
153.90.113.207 AS13476 Montana State University 3.15ms from Billings, US
46.196.173.143 AS47524 Turksat Uydu Haberlesme ve Kablo TV Isletme A.S. 5.14ms from Bursa, TR
18.158.65.207 AS16509 Amazon.com, Inc. 0.20ms from Frankfurt am Main, DE
90.125.78.15 AS3215 Orange S.A. 12.39ms from Frankfurt am Main, DE
124.66.83.15 AS4837 CHINA UNICOM China169 Backbone 17.43ms from Guangzhou, CN
171.109.93.255 AS4134 CHINANET-BACKBONE 15.37ms from Guiyang, CN
82.27.39.255 AS11404 Wave Broadband 0.26ms from Los Angeles, US
69.164.217.63 AS63949 Akamai Connected Cloud 0.13ms from Morris Plains, US

Traceroute

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

$
traceroute -a -n -q1 -f4 204.205.53.159
traceroute to 204.205.53.159 (204.205.53.159): 64 hops max, 52 byte packets
4 [AS3257] 89.149.130.50 8.561 ms
5 *
6 *
7 *
8 *
9 [AS7421] 204.205.53.159 32.996 ms
Measurement taken from IPinfo ProbeNet in Allentown, 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.

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