1. All IP Ranges
  2. 166.0.0.0/8
  3. 166.128.0.0/16
  4. AS20057  | 166.128.0.0/16

166.128.0.0/16

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:      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
166.84.0.0/16 AS2033 Panix 65,536
166.74.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.93.0.0/16 AS26914 Synoptek, LLC 65,536
166.89.0.0/16 AS13918 City of Tucson 65,536
166.123.0.0/16 AS13506 United States Department of the Treasury 65,536
166.80.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.56.0.0/16 AS3371 Verizon Business 65,536
166.91.0.0/16 AS33084 District of Columbia Public Schools 65,536
166.99.0.0/16 AS11719 Eaton Corporation 65,536
166.56.0.0/16 AS3372 Verizon Business 65,536
166.58.0.0/16 AS3377 Verizon Business 65,536
166.70.0.0/16 AS6315 XMission, L.C. 65,536
166.94.0.0/16 AS3926 Fairfax County Government 65,536
166.211.0.0/16 AS22394 Verizon Business 65,536
166.82.0.0/16 AS7029 Windstream Communications LLC 65,536
166.92.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.90.0.0/16 AS3356 Level 3 Parent, LLC 65,536
166.122.0.0/16 AS6360 University of Hawaii 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
166.100.0.0/16 AS2687 AT&T Japan K.K. 65,536
166.238.0.0/16 AS26611 COMUNICACIÓN CELULAR S.A. COMCEL S.A. 65,536
166.91.0.0/16 AS14072 District of Columbia Public Schools 65,536
166.111.0.0/16 AS4538 Tsinghua University 65,536
166.102.0.0/16 AS7029 Windstream Communications LLC 65,536
166.72.0.0/16 AS7018 AT&T Enterprises, LLC 65,536
166.87.0.0/16 AS5080 Saudi Arabian Oil Company 65,536
166.20.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
166.117.0.0/16 AS16509 Amazon.com, Inc. 65,536
166.69.0.0/16 AS19773 Motorola MNIC 65,536
166.104.0.0/16 AS9321 Hanyang University 65,536
166.211.0.0/16 AS6167 Verizon Business 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
166.113.32.0/19 AS13370 Ziply Fiber 8,192
166.63.128.0/19 AS3561 CenturyLink Communications, LLC 8,192
166.114.32.0/19 AS6568 EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA 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 is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
166.128.53.3 cepmsd.edu.do 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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
54.223.243.80 AS55960 Beijing Guanghuan Xinwang Digital 3.44ms from Beijing, CN
101.177.30.112 AS1221 Telstra Limited 17.13ms from Brisbane, AU
75.166.24.160 AS209 CenturyLink Communications, LLC 2.17ms from Denver, US
131.189.253.112 AS8075 Microsoft Corporation 0.27ms from Frankfurt am Main, DE
23.127.68.32 AS7018 AT&T Enterprises, LLC 3.37ms from Kansas City, US
113.235.234.208 AS4837 CHINA UNICOM China169 Backbone 10.11ms from Liaoyang, CN
190.133.152.240 AS6057 Administracion Nacional de Telecomunicaciones 1.63ms from Montevideo, UY
52.55.26.112 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
172.185.160.208 AS8075 Microsoft Corporation 0.57ms from San Jose, US
201.124.193.192 AS8151 UNINET 3.74ms from Santiago de Queretaro, MX
114.29.52.0 AS38669 LG HelloVision Corp. 3.76ms from Seoul, KR
115.21.235.224 AS4766 Korea Telecom 1.38ms from Seoul, KR
43.153.231.48 AS132203 Tencent Building, Kejizhongyi Avenue 0.68ms from Singapore, SG
13.33.39.0 AS16509 Amazon.com, Inc. 0.17ms from Singapore, SG
37.199.147.192 AS1257 Tele2 Sverige AB 0.62ms from Stockholm, SE
14.9.100.32 AS2516 KDDI CORPORATION 11.73ms from Tokyo, JP
210.146.245.144 AS2519 ARTERIA Networks Corporation 2.96ms from Tokyo, JP
212.51.134.48 AS13030 Init7 (Switzerland) Ltd. 1.57ms from Zuerich, CH
82.172.166.80 AS13127 Odido Netherlands B.V. 3.14ms from Amsterdam, NL
108.77.159.176 AS7018 AT&T Enterprises, LLC 1.80ms from Atlanta, US
64.184.62.160 AS11118 ComTeck 4.97ms from Chicago, US
75.3.112.0 AS7018 AT&T Enterprises, LLC 0.63ms from Chicago, US
119.148.33.0 AS23923 Agni Systems Limited 0.30ms from Dhaka, BD
68.148.25.64 AS6327 Shaw Communications 4.41ms from Edmonton, CA
121.205.228.96 AS4134 CHINANET-BACKBONE 3.79ms from Fuzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f9 -m16 166.128.178.10
traceroute to 166.128.178.10 (166.128.178.10): 16 hops max, 52 byte packets
9 [AS7018] 32.130.91.82 49.666 ms
10 *
11 *
12 *
13 [AS20057] 166.147.125.36 54.136 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Dallas, 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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