155.166.185.0/24

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:      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


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

Overlapping Ranges

BGP prefixes that contain 155.166.185.0/24

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

2 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	`3.22ms` from Ashburn, 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
176.205.116.248	AS5384 Emirates Internet	`5.22ms` from Al Fujairah City, AE
95.110.157.168	AS31034 Aruba S.p.A.	`0.28ms` from Arezzo, IT
119.84.199.168	AS4134 CHINANET-BACKBONE	`2.75ms` from Chongqing, CN
86.131.35.88	AS2856 British Telecommunications PLC	`6.88ms` from Erith, GB
90.204.23.168	AS5607 Sky UK Limited	`5.04ms` from Erith, GB
117.135.207.216	AS138407 The Internet Data Center of Guizhou Mobile Communication Company Limited	`0.81ms` from Guiyang, CN
81.33.186.40	AS3352 TELEFONICA DE ESPANA S.A.U.	`3.84ms` from Madrid, ES
72.61.224.248	AS47583 Hostinger International Limited	`0.33ms` from Mumbai, IN
66.94.32.8	AS209242 Cloudflare London, LLC	`9.69ms` from New York City, US
114.66.26.184	AS136188 NINGBO, ZHEJIANG Province, P.R.China.	`0.19ms` from Ningbo, CN
27.121.234.248	AS2519 ARTERIA Networks Corporation	`2.40ms` from Osaka, JP
151.63.142.104	AS1267 WIND TRE S.P.A.	`11.77ms` from Rome, IT
125.158.149.8	AS4766 Korea Telecom	`1.44ms` from Seoul, KR
66.51.219.184	AS16509 Amazon.com, Inc.	`0.13ms` from Singapore, SG
203.217.33.232	AS7545 TPG Telecom Limited	`1.01ms` from Sydney, AU
36.224.214.216	AS3462 Data Communication Business Group	`1.31ms` from Taipei, TW
1.73.248.8	AS9605 NTT DOCOMO, INC.	`1.37ms` from Tokyo, JP
77.172.222.184	AS1136 KPN B.V.	`1.04ms` from Amsterdam, NL
52.234.250.184	AS8075 Microsoft Corporation	`0.40ms` from Ashburn, US
99.71.107.8	AS7018 AT&T Enterprises, LLC	`6.62ms` from Chicago, US
12.109.214.40	AS7018 AT&T Enterprises, LLC	`9.66ms` from Dallas, US
146.122.23.24	AS22216 Siemens Corporation	`1.37ms` from Detroit, US
84.118.60.88	AS3209 Vodafone GmbH	`9.46ms` from Frankfurt am Main, DE
35.244.240.56	AS396982 Google LLC	`0.07ms` from Johannesburg, ZA
182.183.189.56	AS17557 Pakistan Telecommunication Company Limited	`15.54ms` from Karachi, PK

Traceroute

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

traceroute -a -n -q1 -f3 -m15 155.166.185.244

traceroute to 155.166.185.244 (155.166.185.244): 15 hops max, 52 byte packets

3 [AS3223] 5.254.78.149 8.216 ms

4 *

5 [AS3356] 4.69.226.70 86.586 ms

6 [AS7018] 192.205.37.45 81.922 ms

7 [AS7018] 32.130.89.0 79.35 ms

8 *

9 *

10 *

11 *

12 [AS20057] 166.147.124.37 86.782 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Portsmouth, GB

On March 13th 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.

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