155.166.176.0/20

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 155.166.176.0/20

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

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

IP Address	ASN	Details
155.166.185.46	AS20057 AT&T Enterprises, LLC	`3.17ms` from Manassas, US
155.166.184.167	AS20057 AT&T Enterprises, LLC	`15.18ms` from Miami, 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
176.241.71.164	AS50670 VTEL HOLDINGS LIMITED/JORDAN CO.	`6.87ms` from Amman, JO
101.17.76.148	AS4837 CHINA UNICOM China169 Backbone	`5.90ms` from Beijing, CN
181.41.232.68	AS27754 Cooperativa Batan de Obras y Serv. Publicos Ltda	`10.41ms` from Buenos Aires, AR
208.104.22.228	AS14615 Comporium, Inc	`3.10ms` from Charlotte, US
93.221.148.100	AS3320 Deutsche Telekom AG	`2.19ms` from Frankfurt am Main, DE
18.167.148.244	AS16509 Amazon.com, Inc.	`0.12ms` from Hong Kong, HK
124.52.77.164	AS17858 LG POWERCOMM	`1.97ms` from Incheon, KR
79.20.202.36	AS3269 Telecom Italia S.p.A.	`4.09ms` from Milan, IT
27.195.71.4	AS4837 CHINA UNICOM China169 Backbone	`4.83ms` from Qingdao, CN
50.52.54.36	AS20055 Wholesail networks LLC	`7.92ms` from Quincy, US
3.94.1.244	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
13.222.155.52	AS14618 Amazon.com, Inc.	`0.48ms` from Reston, US
72.52.19.244	AS32787 Akamai Technologies, Inc.	`0.28ms` from Singapore, SG
42.187.211.212	AS45090 Shenzhen Tencent Computer Systems Company Limited	`4.58ms` from Tianjin, CN
136.30.19.212	AS19165 Webpass Inc.	`0.43ms` from Chicago, US
74.113.50.180	AS46887 Crown Castle Fiber LLC	`8.71ms` from Chicago, US
18.252.185.212	AS8987 Amazon Data Services Ireland Ltd	`0.81ms` from Columbus, US
4.221.157.20	AS8075 Microsoft Corporation	`0.15ms` from Johannesburg, ZA
94.60.125.68	AS12353 Vodafone Portugal	`6.87ms` from Lisbon, PT
84.120.203.100	AS6739 VODAFONE ONO, S.A.	`10.94ms` from Madrid, ES
24.48.53.52	AS5769 Videotron Ltee	`10.11ms` from Montreal, CA
192.50.1.4	AS4730 Osaka University	`1.55ms` from Osaka, JP
27.198.162.100	AS4837 CHINA UNICOM China169 Backbone	`7.82ms` from Qingdao, CN
8.25.220.84	AS3356 Level 3 Parent, LLC	`0.72ms` from Santa Clara, US
32.208.39.148	AS46690 Southern New England Telephone Company and SNET America, Inc.	`7.82ms` from Secaucus, US

Traceroute

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

traceroute -a -n -q1 -m15 155.166.178.61

traceroute to 155.166.178.61 (155.166.178.61): 15 hops max, 52 byte packets

1 [AS7806] 204.27.195.252 85.863 ms

2 [AS7806] 216.229.23.44 7.206 ms

3 *

4 *

5 [AS6939] 216.66.78.118 13.074 ms

6 [AS7018] 32.130.89.24 51.787 ms

7 *

8 *

9 *

10 [AS7018] 12.90.77.14 52.142 ms

11 *

12 [AS20057] 209.183.54.137 52.808 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Lincoln, US

On January 18th 2026

What are IP address ranges?

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