166.137.172.0/22

AS20057 · AT&T Enterprises, LLC

Need more data or want to access it via API or data downloads? Sign up to get free access

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:      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


POCHandle:      ZS44-ARIN
IsRole:         Y
LastName:       IPAdmin-ATT Internet Services
FirstName:      
Street:         208 S. Akard St.
City:           Dallas
State/Prov:     TX
Country:        US
PostalCode:     75202
RegDate:        2000-05-17
Updated:        2026-02-04
OfficePhone:    +1-888-510-5545
Mailbox:        ipadmin@att.com
Mailbox:        ipadmin@semail.att.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.137.0.0/16

No nearby ranges found.

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

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

IP Address	ASN	Details
166.137.173.32	AS20057 AT&T Enterprises, LLC	`1.47ms` from Morris Plains, US
166.137.172.101	AS20057 AT&T Enterprises, LLC	`1.53ms` from Morris Plains, US
166.137.175.34	AS20057 AT&T Enterprises, LLC	`1.46ms` from Morris Plains, 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
179.61.160.22	AS3356 Level 3 Parent, LLC	`1.32ms` from Amsterdam, NL
76.19.182.150	AS7922 Comcast Cable Communications, LLC	`12.25ms` from Boston, US
70.132.134.166	AS7018 AT&T Enterprises, LLC	`6.11ms` from Durham, US
217.182.105.38	AS16276 OVH SAS	`0.08ms` from Gravelines, FR
163.61.181.102	AS140815 HTTVSERVER TECHNOLOGY COMPANY LIMITED	`0.27ms` from Hanoi, VN
182.183.132.150	AS17557 Pakistan Telecommunication Company Limited	`19.17ms` from Karachi, PK
189.222.29.102	AS8151 UNINET	`7.45ms` from Los Angeles, US
73.84.33.102	AS7922 Comcast Cable Communications, LLC	`5.33ms` from Miami, US
90.127.108.182	AS3215 Orange S.A.	`1.82ms` from Paris, FR
45.60.247.230	AS19551 Incapsula Inc	`0.10ms` from Sao Paulo, BR
61.189.54.38	AS4837 CHINA UNICOM China169 Backbone	`1.51ms` from Tieling, CN
119.108.53.182	AS4837 CHINA UNICOM China169 Backbone	`7.98ms` from Tieling, CN
115.52.244.166	AS4837 CHINA UNICOM China169 Backbone	`7.22ms` from Zhengzhou, CN
77.56.252.182	AS6730 Sunrise GmbH	`4.66ms` from Zuerich, CH
92.68.117.70	AS1136 KPN B.V.	`1.27ms` from Amsterdam, NL
97.219.109.102	AS6167 Verizon Business	`8.47ms` from Atlanta, US
196.250.242.54	AS37172 Mitsol (Pty) Ltd	`1.47ms` from Durban, ZA
79.227.131.70	AS3320 Deutsche Telekom AG	`9.31ms` from Frankfurt am Main, DE
23.130.252.182	AS399861 Mobite Network LLC	`0.35ms` from Fremont, US
203.80.244.150	AS9269 Hong Kong Broadband Network Ltd.	`0.63ms` from Hong Kong, HK
108.90.10.214	AS7018 AT&T Enterprises, LLC	`3.21ms` from Houston, US
116.121.52.118	AS9318 SK Broadband Co Ltd	`1.63ms` from Incheon, KR
81.101.26.54	AS5089 Virgin Media Limited	`4.75ms` from London, GB
52.66.194.70	AS16509 Amazon.com, Inc.	`0.11ms` from Mumbai, IN
173.77.100.102	AS701 Verizon Business	`2.60ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f5 166.137.172.121

traceroute to 166.137.172.121 (166.137.172.121): 64 hops max, 52 byte packets

5 [AS3356] 4.69.209.78 137.584 ms

6 *

7 [AS7018] 32.130.91.66 136.595 ms

8 *

9 *

10 *

11 [AS20057] 166.137.172.121 139.259 ms

Measurement taken from

IPinfo ProbeNet in Krasnodar, RU

On March 20th 2026

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