1. All IP Ranges
  2. 166.0.0.0/8
  3. 166.201.0.0/16
  4. AS20057  | 166.201.0.0/16

166.201.0.0/16

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-166-183-0-0-1
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:        2025-10-29
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:        [email protected]
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:        [email protected]
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:        [email protected]
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.0.0.0/8

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

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
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Pingable IPs

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

IP Address ASN Details
166.201.210.9 AS20057 AT&T Enterprises, LLC 28.35ms from Fremont, US
166.201.228.1 AS20057 AT&T Enterprises, LLC 77.45ms from San Antonio, US
166.201.164.4 AS20057 AT&T Enterprises, LLC 57.60ms from Houston, US
166.201.230.104 AS20057 AT&T Enterprises, LLC 21.32ms from Dallas, US
166.201.209.251 AS20057 AT&T Enterprises, LLC 29.86ms from San Jose, US
166.201.196.1 AS20057 AT&T Enterprises, LLC 26.22ms from San Jose, US
166.201.189.194 AS20057 AT&T Enterprises, LLC 32.98ms from San Jose, US
166.201.231.21 AS20057 AT&T Enterprises, LLC 28.81ms from Dallas, US
166.201.208.242 AS20057 AT&T Enterprises, LLC 34.57ms from San Jose, US
166.201.211.209 AS20057 AT&T Enterprises, LLC 30.88ms from San Jose, US
166.201.227.118 AS20057 AT&T Enterprises, LLC 36.98ms from Ashburn, US
166.201.193.24 AS20057 AT&T Enterprises, LLC 43.26ms from San Jose, US
166.201.191.60 AS20057 AT&T Enterprises, LLC 32.62ms from San Jose, US
166.201.205.213 AS20057 AT&T Enterprises, LLC 35.75ms from San Jose, US
166.201.192.187 AS20057 AT&T Enterprises, LLC 27.69ms from San Jose, US
166.201.64.169 AS20057 AT&T Enterprises, LLC 30.33ms from San Jose, US
166.201.201.78 AS20057 AT&T Enterprises, LLC 30.41ms from Atlanta, US
166.201.190.113 AS20057 AT&T Enterprises, LLC 25.75ms from San Jose, US
166.201.188.94 AS20057 AT&T Enterprises, LLC 24.99ms from Fremont, US
166.201.22.200 AS20057 AT&T Enterprises, LLC 51.12ms 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
154.248.25.16 AS36947 Telecom Algeria 15.41ms from Algiers, DZ
62.40.124.32 AS20965 GEANT Vereniging 0.38ms from Amsterdam, NL
3.121.35.144 AS16509 Amazon.com, Inc. 0.18ms from Frankfurt am Main, DE
5.70.66.112 AS5607 Sky UK Limited 7.14ms from London, GB
45.24.89.240 AS7018 AT&T Enterprises, LLC 3.81ms from Los Angeles, US
57.77.129.0 AS51964 ORANGE BUSINESS SERVICES U.S. Inc. 17.73ms from Newark, US
177.84.227.240 AS262593 Mondax Internet Ltda 6.65ms from Novo Hamburgo, BR
213.29.246.80 AS13036 T-Mobile Czech Republic a.s. 4.04ms from Prague, CZ
45.58.214.16 AS33659 Comcast Cable Communications, LLC 1.80ms from Secaucus, US
45.138.241.224 AS201341 trafficforce, UAB 0.14ms from Sydney, AU
14.14.47.48 AS131927 TV Matsumoto Cablevision 4.38ms from Tokyo, JP
114.178.49.32 AS4713 NTT DOCOMO BUSINESS,Inc. 7.29ms from Tokyo, JP
145.53.237.208 AS1136 KPN B.V. 1.49ms from Amsterdam, NL
97.230.224.32 AS6167 Verizon Business 16.01ms from Atlanta, US
221.218.191.128 AS4808 China Unicom Beijing Province Network 4.15ms from Beijing, CN
95.140.39.64 AS206892 Rendszerinformatika Zrt. 0.26ms from Budapest, HU
139.201.97.16 AS4134 CHINANET-BACKBONE 2.01ms from Chengdu, CN
54.76.39.224 AS16509 Amazon.com, Inc. 0.17ms from Dublin, IE
14.234.211.144 AS45899 VNPT Corp 2.44ms from Ho Chi Minh City, VN
73.27.17.16 AS7922 Comcast Cable Communications, LLC 9.15ms from Miami, US
87.14.59.208 AS3269 Telecom Italia S.p.A. 3.15ms from Milan, IT
52.250.44.112 AS8075 Microsoft Corporation 0.34ms from Quincy, US
44.213.15.96 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
187.211.90.80 AS8151 UNINET 11.66ms from Santiago de Queretaro, MX
1.11.166.0 AS17839 LG HelloVision Corp. 1.26ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -m13 166.201.128.13
traceroute to 166.201.128.13 (166.201.128.13): 13 hops max, 52 byte packets
1 [AS21554] 38.39.182.126 81.737 ms
2 [AS21554] 66.185.29.137 135.077 ms
3 *
4 *
5 [AS7018] 32.130.17.77 45.618 ms
6 [AS7018] 12.122.2.118 47.678 ms
7 [AS7018] 12.122.111.113 42.971 ms
8 *
9 *
10 [AS20057] 209.183.54.137 52.432 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Milwaukee, 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.

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