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:        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 166.0.0.0/8

Range ASN Company Num of IPs
166.80.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.117.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.238.0.0/16 AS26611 COMUNICACIÓN CELULAR S.A. COMCEL S.A. 65,536
166.20.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
166.74.0.0/16 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
166.100.0.0/16 AS2687 AT&T Japan K.K. 65,536
166.90.0.0/16 AS3356 Level 3 Parent, LLC 65,536
166.56.0.0/16 AS3372 Verizon Business 65,536
166.84.0.0/16 AS2033 Panix 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
166.58.0.0/16 AS3377 Verizon Business 65,536
166.99.0.0/16 AS11719 Eaton Corporation 65,536
166.92.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.93.0.0/16 AS26914 Synoptek, LLC 65,536
166.94.0.0/16 AS3926 Fairfax County Government 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
166.111.0.0/16 AS4538 Tsinghua University 65,536
166.91.0.0/16 AS14072 District of Columbia Public Schools 65,536
166.87.0.0/16 AS5080 Saudi Arabian Oil Company 65,536
166.70.0.0/16 AS6315 XMission, L.C. 65,536
166.211.0.0/16 AS6167 Verizon Business 65,536
166.211.0.0/16 AS22394 Verizon Business 65,536
166.122.0.0/16 AS6360 University of Hawaii 65,536
166.72.0.0/16 AS7018 AT&T Enterprises, LLC 65,536
166.102.0.0/16 AS7029 Windstream Communications LLC 65,536
166.82.0.0/16 AS7029 Windstream Communications LLC 65,536
166.104.0.0/16 AS9321 Hanyang University 65,536
166.48.0.0/17 AS396338 Altima Telecom 32,768
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
166.62.128.0/17 AS5769 Videotron Ltee 32,768
166.49.0.0/17 AS3561 CenturyLink Communications, LLC 32,768
166.114.64.0/18 AS6568 EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA 16,384
166.113.64.0/18 AS53449 OEC Fiber 16,384
166.108.128.0/18 AS35077 Netwo SAS 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
166.114.16.0/20 AS6568 EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA 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
Read more

Pingable IPs

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

IP Address ASN Details
166.201.227.32 AS20057 AT&T Enterprises, LLC 34.80ms from Morris Plains, US
166.201.230.24 AS20057 AT&T Enterprises, LLC 19.99ms from Houston, US
166.201.189.194 AS20057 AT&T Enterprises, LLC 30.39ms from San Jose, US
166.201.164.4 AS20057 AT&T Enterprises, LLC 56.97ms from Houston, US
166.201.231.5 AS20057 AT&T Enterprises, LLC 42.85ms from Houston, US
166.201.210.177 AS20057 AT&T Enterprises, LLC 34.51ms from San Jose, US
166.201.205.213 AS20057 AT&T Enterprises, LLC 40.39ms from San Jose, US
166.201.191.135 AS20057 AT&T Enterprises, LLC 30.59ms from San Jose, US
166.201.192.187 AS20057 AT&T Enterprises, LLC 27.00ms from San Jose, US
166.201.190.113 AS20057 AT&T Enterprises, LLC 25.34ms from San Jose, US
166.201.22.154 AS20057 AT&T Enterprises, LLC 38.36ms from Ashburn, US
166.201.188.94 AS20057 AT&T Enterprises, LLC 27.16ms from Fremont, US
166.201.196.1 AS20057 AT&T Enterprises, LLC 24.99ms from San Jose, US
166.201.211.119 AS20057 AT&T Enterprises, LLC 31.29ms from Santa Clara, US
166.201.209.218 AS20057 AT&T Enterprises, LLC 32.13ms from Fremont, US
166.201.201.5 AS20057 AT&T Enterprises, LLC 27.50ms from Atlanta, US
166.201.64.169 AS20057 AT&T Enterprises, LLC 28.02ms from Santa Clara, US
166.201.208.67 AS20057 AT&T Enterprises, LLC 26.09ms from Santa Clara, US
166.201.228.1 AS20057 AT&T Enterprises, LLC 65.37ms from Dallas, US
166.201.193.28 AS20057 AT&T Enterprises, LLC 40.40ms from San Jose, 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
40.76.161.16 AS8075 Microsoft Corporation 0.41ms from Ashburn, US
216.126.134.112 AS7029 Windstream Communications LLC 0.49ms from Atlanta, US
13.244.218.208 AS16509 Amazon.com, Inc. 0.09ms from Cape Town, ZA
168.73.16.96 AS21928 T-Mobile USA, Inc. 19.99ms from Chicago, US
42.3.238.0 AS4760 HKT Limited 0.89ms from Hong Kong, HK
13.135.36.224 AS16509 Amazon.com, Inc. 0.15ms from London, GB
62.174.195.32 AS12430 VODAFONE ESPANA S.A.U. 11.95ms from Madrid, ES
135.134.252.112 AS4181 TDS TELECOM 5.31ms from Minneapolis, US
118.191.6.208 AS4837 CHINA UNICOM China169 Backbone 5.47ms from Nanjing, CN
76.111.147.64 AS7922 Comcast Cable Communications, LLC 11.15ms from New York City, US
124.129.6.144 AS4837 CHINA UNICOM China169 Backbone 0.38ms from Qingdao, CN
218.59.198.208 AS4837 CHINA UNICOM China169 Backbone 5.11ms from Qingdao, CN
44.194.152.208 AS14618 Amazon.com, Inc. 0.19ms from Reston, US
178.252.82.96 AS42893 Home Internet Ltd 0.83ms from Saint Petersburg, RU
37.18.54.144 AS210150 Voss Fiber AS 6.60ms from Sandefjord, NO
66.19.192.16 AS7029 Windstream Communications LLC 1.03ms from Secaucus, US
211.21.163.48 AS3462 Data Communication Business Group 1.15ms from Taipei, TW
31.217.60.240 AS5391 Hrvatski Telekom d.d. 0.67ms from Zagreb, HR
163.252.153.160 AS13977 Fidium 4.57ms from Boston, US
175.18.31.224 AS4837 CHINA UNICOM China169 Backbone 4.45ms from Changchun, CN
51.210.117.80 AS16276 OVH SAS 0.06ms from Gravelines, FR
154.193.198.208 AS400619 AROSSCLOUD INC. 1.42ms from Hong Kong, HK
123.190.4.176 AS4837 CHINA UNICOM China169 Backbone 10.52ms from Liaoyang, CN
2.98.248.160 AS13285 TalkTalk Communications Limited 3.83ms from London, GB
51.219.118.0 AS31655 Gamma Telecom Holdings Ltd 0.51ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -f3 -m14 166.201.17.11
traceroute to 166.201.17.11 (166.201.17.11): 14 hops max, 52 byte packets
3 [] 84.17.33.92 0.205 ms
5 *
6 *
7 *
8 *
9 [AS7018] 12.90.77.14 46.383 ms
10 *
11 [AS20057] 209.183.54.137 46.977 ms
12 *
13 *
14 *
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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