1. All IP Ranges
  2. 166.0.0.0/8
  3. 166.131.0.0/16
  4. AS20057  | 166.131.0.0/16

166.131.0.0/16

AS20057  ·  AT&T Enterprises, LLC

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Summary

Country United States
Domain att.com
ASN AS20057
Registry ARIN
ID AEL-360

WHOIS Details

NetHandle:      NET-166-128-0-0-1
OrgID:          AEL-360
Parent:         NET-166-0-0-0-0
NetName:        AEL-360
NetRange:       166.128.0.0 - 166.138.255.255
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:        2025-10-29
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:        2025-08-18
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:        2025-08-18
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:        2025-08-18
OfficePhone:    +1-919-319-8167
Mailbox:        abuse@att.net
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.0.0.0/8

Range ASN Company Num of IPs
166.69.0.0/16 AS19773 Motorola MNIC 65,536
166.80.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.122.0.0/16 AS6360 University of Hawaii 65,536
166.123.0.0/16 AS13506 United States Department of the Treasury 65,536
166.56.0.0/16 AS3371 Verizon Business 65,536
166.74.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.58.0.0/16 AS3371 Verizon Business 65,536
166.93.0.0/16 AS26914 Synoptek, LLC 65,536
166.58.0.0/16 AS3377 Verizon Business 65,536
166.58.0.0/16 AS3372 Verizon Business 65,536
166.84.0.0/16 AS2033 Panix 65,536
166.111.0.0/16 AS4538 Tsinghua University 65,536
166.211.0.0/16 AS22394 Verizon Business 65,536
166.20.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
166.92.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.82.0.0/16 AS7029 Windstream Communications LLC 65,536
166.91.0.0/16 AS33084 District of Columbia Public Schools 65,536
166.19.0.0/16 AS33425 CoreWeave, Inc 65,536
166.238.0.0/16 AS26611 COMUNICACIÓN CELULAR S.A. COMCEL S.A. 65,536
166.90.0.0/16 AS3257 Level 3 Parent, LLC 65,536
166.90.0.0/16 AS3356 Level 3 Parent, LLC 65,536
166.56.0.0/16 AS3372 Verizon Business 65,536
166.102.0.0/16 AS7029 Windstream Communications LLC 65,536
166.100.0.0/16 AS2687 AT&T Japan K.K. 65,536
166.99.0.0/16 AS11719 Eaton Corporation 65,536
166.70.0.0/16 AS6315 XMission, L.C. 65,536
166.89.0.0/16 AS13918 City of Tucson 65,536
166.72.0.0/16 AS7018 AT&T Enterprises, LLC 65,536
166.94.0.0/16 AS3926 Fairfax County Government 65,536
166.87.0.0/16 AS5080 Saudi Arabian Oil Company 65,536
166.91.0.0/16 AS14072 District of Columbia Public Schools 65,536
166.117.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.211.0.0/16 AS6167 Verizon Business 65,536
166.104.0.0/16 AS9321 Hanyang University 65,536
166.62.128.0/17 AS5769 Videotron Ltee 32,768
166.49.128.0/17 AS5400 communications networking services Private Unlimited Company 32,768
166.48.0.0/17 AS396338 Altima Telecom 32,768
166.49.0.0/17 AS3561 CenturyLink Communications, LLC 32,768
166.114.128.0/17 AS6568 EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA 32,768
166.114.64.0/18 AS6568 EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA 16,384
166.108.128.0/18 AS35077 Netwo SAS 16,384
166.113.64.0/18 AS53449 OEC Fiber 16,384
166.63.160.0/19 AS1273 Vodafone Americas 8,192
166.114.32.0/19 AS6568 EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA 8,192
166.63.128.0/19 AS3561 CenturyLink Communications, LLC 8,192
166.113.32.0/19 AS13370 Ziply Fiber 8,192
166.113.0.0/19 AS19870 Cherry Creek School District #5 8,192
166.63.192.0/19 AS1273 Vodafone Americas 8,192
166.108.0.0/19 AS16509 Amazon.com, Inc. 8,192
166.93.0.0/20 AS26914 Synoptek Pittsford DC 4,096

Hosted domains

There are 3 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
166.131.56.8 harbormedical.org 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

3,717 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
166.131.164.136 AS20057 AT&T Enterprises, LLC 2.04ms from Ashburn, US
166.131.171.65 AS20057 AT&T Enterprises, LLC 37.38ms from Atlanta, US
166.131.38.218 AS20057 AT&T Enterprises, LLC 3.28ms from Fremont, US
166.131.107.138 AS20057 AT&T Enterprises, LLC 29.60ms from Houston, US
166.131.129.6 AS20057 AT&T Enterprises, LLC 14.43ms from Miami, US
166.131.179.10 AS20057 AT&T Enterprises, LLC 30.70ms from Redding, US
166.131.15.126 AS20057 AT&T Enterprises, LLC 3.09ms from Santa Clara, US
166.131.90.47 AS20057 AT&T Enterprises, LLC 35.55ms from Atlanta, US
166.131.92.136 AS20057 AT&T Enterprises, LLC 9.22ms from Chicago, US
166.131.185.81 AS20057 AT&T Enterprises, LLC 22.79ms from Dallas, US
166.131.75.4 AS20057 AT&T Enterprises, LLC 2.46ms from Ashburn, US
166.131.137.137 AS20057 AT&T Enterprises, LLC 14.02ms from Ashburn, US
166.131.141.150 AS20057 AT&T Enterprises, LLC 32.73ms from Atlanta, US
166.131.57.193 AS20057 AT&T Enterprises, LLC 79.08ms from Columbus, US
166.131.37.132 AS20057 AT&T Enterprises, LLC 40.57ms from Dallas, US
166.131.165.78 AS20057 AT&T Enterprises, LLC 2.68ms from Manassas, US
166.131.190.68 AS20057 AT&T Enterprises, LLC 22.52ms from Atlanta, US
166.131.71.65 AS20057 AT&T Enterprises, LLC 31.51ms from Dallas, US
166.131.230.26 AS20057 AT&T Enterprises, LLC 38.38ms from Dallas, US
166.131.33.197 AS20057 AT&T Enterprises, LLC 36.41ms from Atlanta, US
166.131.192.126 AS20057 AT&T Enterprises, LLC 15.97ms from Dallas, US
166.131.227.44 AS20057 AT&T Enterprises, LLC 2.78ms from Manassas, US
166.131.133.219 AS20057 AT&T Enterprises, LLC 14.20ms from Miami, US
166.131.46.243 AS20057 AT&T Enterprises, LLC 47.17ms from Dallas, US
166.131.213.55 AS20057 AT&T Enterprises, LLC 6.03ms from Dallas, 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
92.52.44.80 AS15962 Orange Slovensko a.s. 1.75ms from Bratislava, SK
165.84.146.48 AS9269 Hong Kong Broadband Network Ltd. 0.88ms from Hong Kong, HK
198.202.101.192 AS195 San Diego Supercomputer Center 2.54ms from Los Angeles, US
108.253.90.112 AS7018 AT&T Enterprises, LLC 2.64ms from Miami, US
73.107.249.224 AS7922 Comcast Cable Communications, LLC 6.72ms from Miami, US
20.169.90.144 AS8075 Microsoft Corporation 0.37ms from Phoenix, US
189.231.118.240 AS8151 UNINET 14.96ms from Phoenix, US
101.235.52.0 AS10036 DLIVE 1.71ms from Seoul, KR
61.47.245.0 AS17597 SK Broadband Co Ltd 1.90ms from Seoul, KR
52.197.184.160 AS16509 Amazon.com, Inc. 0.16ms from Tokyo, JP
222.4.152.80 AS2516 KDDI CORPORATION 3.89ms from Tokyo, JP
197.200.95.16 AS36947 Telecom Algeria 19.17ms from Algiers, DZ
20.51.181.96 AS8075 Microsoft Corporation 0.47ms from Ashburn, US
138.119.150.96 AS611 NB-PEI Educational Computer Network 13.43ms from Beauharnois, CA
222.214.64.48 AS4134 CHINANET-BACKBONE 6.75ms from Chengdu, CN
211.137.86.64 AS9808 China Mobile Communications Group Co., Ltd. 2.40ms from Chengdu, CN
46.20.197.0 AS24722 Babilon 1.34ms from Dushanbe, TJ
113.179.182.144 AS45899 VNPT Corp 2.86ms from Hanoi, VN
75.54.128.176 AS7018 AT&T Enterprises, LLC 18.43ms from Los Angeles, US
88.47.108.240 AS3269 Telecom Italia S.p.A. 3.97ms from Milan, IT
88.163.139.128 AS12322 Free SAS 19.40ms from Paris, FR
67.2.228.176 AS209 CenturyLink Communications, LLC 2.96ms from Salt Lake City, US
201.237.236.224 AS11830 Instituto Costarricense de Electricidad y Telecom. 1.56ms from San Jose, CR
198.68.226.16 AS174 Cogent Communications, LLC 0.33ms from Secaucus, US
103.186.117.192 AS132372 GB Network Solutions Sdn. Bhd. 0.02ms from Sepang, MY

Traceroute

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

$
traceroute -a -n -q1 -f2 166.131.75.59
traceroute to 166.131.75.59 (166.131.75.59): 64 hops max, 52 byte packets
2 [AS1299] 62.115.156.48 3.869 ms
4 *
5 [AS1299] 62.115.45.237 2.771 ms
6 [AS7018] 32.130.89.0 4.377 ms
7 *
8 *
9 *
10 *
12 *
13 *
14 *
15 *
16 [AS20057] 166.131.75.59 1388.145 ms
Measurement taken from IPinfo ProbeNet in Ashburn, 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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