1. All IP Ranges
  2. 204.0.0.0/8
  3. 204.146.0.0/16
  4. AS7018  | 204.146.0.0/16

204.146.0.0/16

AS7018  ·  AT&T Enterprises, LLC

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Summary

Country United States
Domain att.com
ASN AS7018
Registry ARIN
ID ATT-204-146-0-0-C

WHOIS Details

NetHandle:      NET-204-146-0-0-1
OrgID:          AEL-360
Parent:         NET-204-0-0-0-0
NetName:        ATT-204-146-0-0-C
NetRange:       204.146.0.0 - 204.146.255.255
NetType:        allocation
RegDate:        1994-09-12
Updated:        2024-12-05
Source:         ARIN


OrgID:          AEL-360
OrgName:        AT&T Enterprises, LLC
CanAllocate:    
Street:         9380 STATION ST
City:           LONE TREE
State/Prov:     CO
Country:        US
PostalCode:     80124
RegDate:        2024-11-22
Updated:        2025-10-14
OrgAdminHandle: ZS44-ARIN
OrgTechHandle:  ICC-ARIN
OrgTechHandle:  ZS44-ARIN
OrgAbuseHandle: ABUSE7-ARIN
OrgRoutingHandle:   ROUTI59-ARIN
Source:         ARIN


POCHandle:      ABUSE7-ARIN
IsRole:         Y
LastName:       abuse
FirstName:      
Street:         2701 W 15th ST
City:           Plano
State/Prov:     TX
Country:        US
PostalCode:     75075
RegDate:        2002-08-24
Updated:        2025-08-18
OfficePhone:    +1-919-319-8167
Mailbox:        abuse@att.net
Source:         ARIN


POCHandle:      ICC-ARIN
IsRole:         Y
LastName:       IP Team
FirstName:      
Street:         200 S. Laurel AVE
City:           MIDDLETOWN
State/Prov:     NJ
Country:        US
PostalCode:     07748
RegDate:        2002-09-24
Updated:        2025-08-18
OfficePhone:    +1-888-876-2382
Mailbox:        rm-ipspecialist@att.com
Source:         ARIN


POCHandle:      ZS44-ARIN
IsRole:         Y
LastName:       IPAdmin-ATT Internet Services
FirstName:      
Street:         7277 164th Ave NE
Street:         Attn: IP Management
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2000-05-17
Updated:        2025-08-18
OfficePhone:    +1-888-510-5545
Mailbox:        ipadmin@att.com
Mailbox:        ipadmin@semail.att.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 204.0.0.0/8

Range ASN Company Num of IPs
204.176.0.0/14 AS701 Verizon Business 262,144
204.148.0.0/14 AS701 Verizon Business 262,144
204.0.0.0/14 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
204.252.0.0/14 AS11606 Verizon Business 262,144
204.200.0.0/14 AS2914 NTT America, Inc. 262,144
204.64.0.0/14 AS1761 Texas Department of Information Resources 262,144
204.176.0.0/14 AS15297 Verizon Business 262,144
204.240.0.0/14 AS174 Cogent Communications, LLC 262,144
204.252.0.0/14 AS22883 Verizon Business 262,144
204.180.0.0/14 AS174 Sprint 262,144
204.248.0.0/14 AS174 Sprint 262,144
204.0.0.0/14 AS6424 NTT America, Inc. 262,144
204.4.0.0/14 AS174 Cogent Communications, LLC 262,144
204.212.0.0/14 AS174 Sprint 262,144
204.70.0.0/15 AS3561 CenturyLink Communications, LLC 131,072
204.20.0.0/15 AS749 DoD Network Information Center 131,072
204.84.0.0/15 AS6559 MCNC 131,072
204.72.0.0/15 AS1347 Inteliquent, inc. 131,072
204.46.0.0/15 AS14298 Environmental Protection Agency 131,072
204.220.0.0/15 AS5006 Inteliquent, inc. 131,072
204.72.0.0/15 AS5006 Inteliquent, inc. 131,072
204.170.0.0/15 AS2914 NTT America, Inc. 131,072
204.84.0.0/15 AS81 MCNC 131,072
204.46.0.0/15 AS4186 Environmental Protection Agency 131,072
204.142.0.0/15 AS2914 NTT America, Inc. 131,072
204.84.0.0/15 AS11442 MCNC 131,072
204.84.0.0/15 AS20197 MCNC 131,072
204.70.0.0/15 AS11012 CenturyLink Communications, LLC 131,072
204.41.0.0/16 AS873 GONET 65,536
204.91.0.0/16 AS701 Verizon Business 65,536
204.41.0.0/16 AS874 GONET 65,536
204.41.0.0/16 AS869 GONET 65,536
204.121.0.0/16 AS68 Los Alamos National Laboratory 65,536
204.41.0.0/16 AS872 GONET 65,536
204.41.0.0/16 AS875 GONET 65,536
204.208.0.0/16 AS5972 Headquarters, USAISC 65,536
204.38.0.0/16 AS237 Merit Network Inc. 65,536
204.92.0.0/16 AS701 Verizon Business 65,536
204.41.0.0/16 AS868 GONET 65,536
204.191.0.0/16 AS852 TELUS Communications Inc. 65,536
204.100.0.0/16 AS18558 County of Riverside 65,536
204.92.0.0/16 AS852 Verizon Business 65,536
204.41.0.0/16 AS808 GONET 65,536
204.244.0.0/16 AS5071 Navigata Communications Limited 65,536
204.41.0.0/16 AS858 GONET 65,536
204.49.0.0/16 AS209 CenturyLink Communications, LLC 65,536
204.234.0.0/16 AS11714 Network Nebraska 65,536
204.42.0.0/16 AS2914 NTT America, Inc. 65,536

Hosted domains

There are 6 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
204.146.182.80 ocg.net 3
204.146.168.195 e-mail.com 1
204.146.168.193 ibmmail.com 1
204.146.5.114 sjcrinc.com 1

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

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

IP Address ASN Details
204.146.219.29 AS7018 AT&T Enterprises, LLC 3.37ms from San Jose, US
204.146.0.33 AS7018 AT&T Enterprises, LLC 2.55ms from Chicago, US
204.146.1.178 AS7018 AT&T Enterprises, LLC 2.57ms from Chicago, US
204.146.153.228 AS7018 AT&T Enterprises, LLC 1.94ms from Chicago, US
204.146.141.205 AS7018 AT&T Enterprises, LLC 2.78ms from Chicago, US
204.146.166.107 AS7018 AT&T Enterprises, LLC 3.38ms from San Jose, US
204.146.172.245 AS7018 AT&T Enterprises, LLC 8.12ms from Chicago, 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
20.169.197.0 AS8075 Microsoft Corporation 0.45ms from Ashburn, US
196.21.233.96 AS37520 Rhodes University 12.44ms from Cape Town, ZA
34.31.52.64 AS396982 Google LLC 0.13ms from Council Bluffs, US
172.164.239.96 AS8075 Microsoft Corporation 0.91ms from Dubai, AE
108.128.243.192 AS16509 Amazon.com, Inc. 0.16ms from Dublin, IE
217.92.98.64 AS3320 Deutsche Telekom AG 4.62ms from Frankfurt am Main, DE
188.165.157.96 AS16276 OVH SAS 0.24ms from Gravelines, FR
93.207.51.240 AS3320 Deutsche Telekom AG 4.34ms from Hamburg, DE
178.151.156.16 AS13188 CONTENT DELIVERY NETWORK LTD 0.78ms from Kyiv, UA
116.140.188.112 AS4837 CHINA UNICOM China169 Backbone 5.68ms from Liaoyang, CN
86.14.47.224 AS5089 Virgin Media Limited 10.37ms from London, GB
15.157.11.128 AS16509 Amazon.com, Inc. 0.18ms from Montreal, CA
133.207.135.96 AS2518 BIGLOBE Inc. 9.08ms from Osaka, JP
68.106.245.112 AS22773 Cox Communications Inc. 7.33ms from Phoenix, US
44.193.95.64 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
31.132.62.16 AS10557 Connect Northwest Internet Services, LLC 0.22ms from Seattle, US
43.202.241.80 AS16509 Amazon.com, Inc. 0.14ms from Seoul, KR
221.166.64.240 AS4766 Korea Telecom 1.81ms from Seoul, KR
20.70.228.128 AS8075 Microsoft Corporation 0.69ms from Sydney, AU
61.199.150.96 AS4713 NTT DOCOMO BUSINESS,Inc. 3.05ms from Tokyo, JP
71.73.54.48 AS10796 Charter Communications Inc 12.95ms from Toronto, CA
50.101.196.224 AS577 Bell Canada 5.12ms from Toronto, CA
216.220.210.0 AS8075 Microsoft Corporation 0.20ms from Toronto, CA
99.234.119.64 AS812 Rogers Communications Canada Inc. 3.83ms from Toronto, CA
172.67.227.160 AS13335 Cloudflare, Inc. 0.14ms from Yerevan, AM

Traceroute

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

$
traceroute -a -n -q1 -f4 -m10 204.146.18.56
traceroute to 204.146.18.56 (204.146.18.56): 10 hops max, 52 byte packets
4 [] 15.230.139.194 7.48 ms
5 *
6 *
7 [AS7018] 12.89.243.6 0.725 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Chicago, 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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