155.166.80.0/20

AS20057 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS20057
Parent Range	155.166.0.0/16
Registry	ARIN
ID	ATT-MOBILITY-LLC-155-166-0-0

WHOIS Details

NetHandle:      NET-155-166-0-0-1
OrgID:          AEL-360
Parent:         NET-155-0-0-0-0
NetName:        ATT-MOBILITY-LLC-155-166-0-0
NetRange:       155.166.0.0 - 155.166.255.255
NetType:        allocation
RegDate:        1992-03-24
Updated:        2025-03-18
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

Overlapping Ranges

BGP prefixes that contain 155.166.80.0/20

Range	ASN	Company	Num of IPs
155.166.0.0/16	AS20057	AT&T Enterprises, LLC	65,536

Nearby Ranges

BGP prefixes that overlap with 155.166.0.0/16

Range	ASN	Company	Num of IPs
155.166.0.0/16	AS20057	AT&T Enterprises, LLC	65,536

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

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
97.187.128.4	AS6167 Verizon Business	`19.44ms` from Ashburn, US
152.53.69.52	AS42473 Anexia Cloud Solutions GmbH	`4.41ms` from Bogota, CO
136.183.248.4	AS19933 Buffalo State College	`1.31ms` from Buffalo, US
18.223.248.52	AS16509 Amazon.com, Inc.	`0.69ms` from Columbus, US
72.109.214.196	AS6167 Verizon Business	`14.08ms` from Dallas, US
132.196.118.180	AS8075 Microsoft Corporation	`0.14ms` from Des Moines, US
151.243.129.68	AS209242 Cloudflare London, LLC	`0.84ms` from Los Angeles, US
199.204.88.100	AS13767 DataBank Holdings, Ltd.	`1.36ms` from Minneapolis, US
183.155.36.132	AS4134 CHINANET-BACKBONE	`9.05ms` from Nanchang, CN
83.243.210.20	AS25400 Telia Norge AS	`14.62ms` from Sandefjord, NO
58.93.17.228	AS4713 NTT DOCOMO BUSINESS,Inc.	`19.40ms` from Tokyo, JP
74.15.81.196	AS577 Bell Canada	`2.20ms` from Toronto, CA
46.114.19.52	AS6805 Telefonica Germany GmbH & Co.OHG	`14.28ms` from Frankfurt am Main, DE
110.15.82.164	AS9318 SK Broadband Co Ltd	`1.72ms` from Incheon, KR
83.43.199.36	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.61ms` from Madrid, ES
202.223.22.164	AS131943 Goto tv	`9.80ms` from Osaka, JP
159.153.131.68	AS398938 Electronic Arts, Inc.	`1.86ms` from Seattle, US
175.226.211.4	AS4766 Korea Telecom	`1.88ms` from Seoul, KR
121.181.206.68	AS4766 Korea Telecom	`5.32ms` from Seoul, KR
199.217.119.196	AS30083 velia.net	`0.18ms` from St. Louis, US
60.112.58.116	AS17676 SoftBank Corp.	`2.58ms` from Tokyo, JP
77.65.205.4	AS210407 Centrum Asysty Szkodowej Sp. z o.o.	`0.63ms` from Wrocław, PL
158.12.200.196	AS668 United States Department of Defense (DoD)	`2.71ms` from Ashburn, US
167.7.133.84	AS2939 State of South Carolina	`3.34ms` from Charlotte, US
175.153.70.228	AS4837 CHINA UNICOM China169 Backbone	`6.57ms` from Chengdu, CN

Traceroute

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

traceroute -a -n -q1 -f3 -m13 155.166.83.37

traceroute to 155.166.83.37 (155.166.83.37): 13 hops max, 52 byte packets

3 [AS3356] 8.243.205.129 5.334 ms

4 [AS3356] 4.69.216.145 83.948 ms

5 [AS3356] 4.68.62.226 72.953 ms

6 [AS7018] 32.130.89.14 74.175 ms

7 *

8 *

9 *

10 [AS20057] 166.170.17.85 75.106 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Quito, EC

On January 19th 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.

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