1. All IP Ranges
  2. 166.0.0.0/8
  3. 166.204.0.0/16
  4. AS20057  | 166.204.0.0/17

166.204.0.0/17

AS20057  ·  AT&T Enterprises, 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 att.com
ASN AS20057
Registry ARIN
ID AEL-360

WHOIS Details

NetHandle:      NET-166-183-0-0-1
OrgID:          AEL-360
Parent:         NET-166-0-0-0-0
NetName:        AEL-360
NetRange:       166.183.0.0 - 166.209.255.255
NetType:        allocation
RegDate:        2025-04-01
Updated:        2025-04-01
Source:         ARIN


OrgID:          AEL-360
OrgName:        AT&T Enterprises, LLC
CanAllocate:    
Street:         208 S. Akard St.
City:           Dallas
State/Prov:     TX
Country:        US
PostalCode:     75202
RegDate:        2024-11-22
Updated:        2025-07-21
OrgAdminHandle: ZS44-ARIN
OrgTechHandle:  ICC-ARIN
OrgTechHandle:  ZS44-ARIN
OrgAbuseHandle: ABUSE7-ARIN
OrgRoutingHandle:   ROUTI59-ARIN
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:        2025-07-03
OfficePhone:    +1-888-510-5545
Mailbox:        ipadmin@att.com
Mailbox:        ipadmin@semail.att.com
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:        2025-07-03
OfficePhone:    +1-888-876-2382
Mailbox:        rm-ipspecialist@att.com
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:        2025-07-03
OfficePhone:    +1-919-319-8167
Mailbox:        abuse@att.net
Source:         ARIN

Overlapping Ranges

BGP prefixes that are contained by 166.204.0.0/17

Range ASN Company Num of IPs
166.204.63.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.98.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.61.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.55.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.54.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.90.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.94.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.58.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.60.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.52.0/23 AS20057 AT&T Enterprises, LLC 512
166.204.56.0/23 AS20057 AT&T Enterprises, LLC 512
166.204.100.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.108.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.48.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.80.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.44.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.84.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.104.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.40.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.32.0/21 AS20057 AT&T Enterprises, LLC 2,048
166.204.0.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.64.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.16.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.112.0/20 AS20057 AT&T Enterprises, LLC 4,096

Nearby Ranges

BGP prefixes that overlap with 166.204.0.0/16

Range ASN Company Num of IPs
166.204.64.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.16.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.0.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.112.0/20 AS20057 AT&T Enterprises, LLC 4,096
166.204.32.0/21 AS20057 AT&T Enterprises, LLC 2,048
166.204.100.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.108.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.48.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.80.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.44.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.84.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.104.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.40.0/22 AS20057 AT&T Enterprises, LLC 1,024
166.204.56.0/23 AS20057 AT&T Enterprises, LLC 512
166.204.52.0/23 AS20057 AT&T Enterprises, LLC 512
166.204.94.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.90.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.55.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.98.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.61.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.58.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.54.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.63.0/24 AS20057 AT&T Enterprises, LLC 256
166.204.60.0/24 AS20057 AT&T Enterprises, LLC 256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address ASN Details
166.204.97.16 AS20057 AT&T Enterprises, LLC 2.93ms from Ashburn, US
166.204.63.17 AS20057 AT&T Enterprises, LLC 31.97ms from San Jose, US
166.204.48.216 AS20057 AT&T Enterprises, LLC 26.73ms from San Jose, US
166.204.93.155 AS20057 AT&T Enterprises, LLC 2.94ms from Ashburn, US
166.204.96.138 AS20057 AT&T Enterprises, LLC 23.89ms from Ashburn, US
166.204.81.126 AS20057 AT&T Enterprises, LLC 101.58ms from Los Angeles, US
166.204.60.107 AS20057 AT&T Enterprises, LLC 58.34ms from San Jose, US
166.204.95.37 AS20057 AT&T Enterprises, LLC 4.93ms from Santa Clara, US
166.204.32.159 AS20057 AT&T Enterprises, LLC 26.29ms from Atlanta, US
166.204.73.60 AS20057 AT&T Enterprises, LLC 41.32ms from Houston, US
166.204.94.16 AS20057 AT&T Enterprises, LLC 19.52ms from Houston, US
166.204.64.45 AS20057 AT&T Enterprises, LLC 84.75ms from Atlanta, US
166.204.52.90 AS20057 AT&T Enterprises, LLC 18.77ms from Houston, US
166.204.90.202 AS20057 AT&T Enterprises, LLC 14.19ms from Miami, US
166.204.33.10 AS20057 AT&T Enterprises, LLC 42.46ms from Atlanta, US
166.204.55.43 AS20057 AT&T Enterprises, LLC 88.48ms from Santa Clara, US
166.204.62.61 AS20057 AT&T Enterprises, LLC 29.24ms from Houston, US
166.204.54.110 AS20057 AT&T Enterprises, LLC 3.00ms from Ashburn, US
166.204.50.42 AS20057 AT&T Enterprises, LLC 73.21ms from San Jose, US
166.204.56.184 AS20057 AT&T Enterprises, LLC 44.47ms from Santa Clara, US
166.204.66.9 AS20057 AT&T Enterprises, LLC 51.05ms from Dallas, US
166.204.72.49 AS20057 AT&T Enterprises, LLC 43.82ms from Houston, US
166.204.67.37 AS20057 AT&T Enterprises, LLC 51.83ms from Houston, US
166.204.104.103 AS20057 AT&T Enterprises, LLC 23.00ms from Houston, US
166.204.74.146 AS20057 AT&T Enterprises, LLC 60.78ms from Houston, 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
62.194.140.1 AS33915 Vodafone Libertel B.V. 4.00ms from Amsterdam, NL
81.30.65.1 AS57112 F2X Operator B.V. 0.21ms from Amsterdam, NL
68.113.160.1 AS20115 Charter Communications LLC 16.52ms from Ashburn, US
72.15.96.49 AS11693 WideOpenWest Finance LLC 1.28ms from Atlanta, US
188.82.26.1 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 3.64ms from Braga, PT
186.127.203.1 AS7303 Telecom Argentina S.A. 1.29ms from Buenos Aires, AR
38.89.235.145 AS174 Cogent Communications 0.76ms from Chicago, US
38.2.7.145 AS18615 Mainstream Fiber Networks, LLC 7.23ms from Chicago, US
38.191.22.1 AS395876 Huxley Communications Cooperative 10.43ms from Chicago, US
212.28.87.145 AS15836 Arax-Impex s.r.l. 0.19ms from Chisinau, MD
3.253.253.193 AS16509 Amazon.com, Inc. 0.12ms from Dublin, IE
210.21.100.1 AS17622 China Unicom Guangzhou network 3.12ms from Guangzhou, CN
71.41.187.33 AS11427 Charter Communications Inc 4.66ms from Houston, US
85.109.197.1 AS9121 Turk Telekomunikasyon Anonim Sirketi 0.90ms from Istanbul, TR
92.24.80.1 AS13285 TalkTalk Communications Limited 4.66ms from London, GB
47.176.92.177 AS5650 Frontier Communications of America, Inc. 0.69ms from Los Angeles, US
73.54.84.1 AS7922 Comcast Cable Communications, LLC 6.03ms from Miami, US
194.184.33.241 AS3269 Telecom Italia S.p.A. 4.22ms from Milan, IT
111.72.108.1 AS4134 CHINANET-BACKBONE 9.05ms from Nanchang, CN
182.88.143.129 AS4837 CHINA UNICOM China169 Backbone 1.42ms from Nanning, CN
201.13.97.1 AS27699 TELEFÔNICA BRASIL S.A 7.00ms from Osasco, BR
179.110.182.1 AS27699 TELEFÔNICA BRASIL S.A 1.40ms from Osasco, BR
62.92.158.65 AS2119 Telenor Norge AS 4.18ms from Oslo, NO
201.56.104.161 AS4230 CLARO S.A. 3.75ms from Sao Paulo, BR
125.191.147.209 AS17858 LG POWERCOMM 6.10ms from Seoul, KR

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