1. All IP Ranges
  2. 155.0.0.0/8
  3. 155.163.0.0/16
  4. AS20057  | 155.163.0.0/16

155.163.0.0/16

AS20057  ·  AT&T Enterprises, LLC

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Summary

Country United States
Domain att.com
ASN AS20057
Registry ARIN
ID ATT-MOBILITY-LLC-155-163-0-0

WHOIS Details

NetHandle:      NET-155-163-0-0-1
OrgID:          AEL-360
Parent:         NET-155-0-0-0-0
NetName:        ATT-MOBILITY-LLC-155-163-0-0
NetRange:       155.163.0.0 - 155.163.255.255
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:         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 155.0.0.0/8

Range ASN Company Num of IPs
155.227.0.0/16 AS2119 Nortura SA 65,536
155.135.0.0/16 AS2152 California State University, Dominguez Hills 65,536
155.188.0.0/16 AS20437 Nationwide Mutual Insurance Company 65,536
155.201.0.0/16 AS20426 PriceWaterhouseCoopers, LLP 65,536
155.136.0.0/16 AS21301 Royal Bank of Scotland 65,536
155.98.0.0/16 AS17055 University of Utah 65,536
155.240.0.0/16 AS2018 Agricultural Research Council 65,536
155.232.0.0/16 AS2018 TENET (The UNINET Project) 65,536
155.238.0.0/16 AS2018 Cape Technikon 65,536
155.166.0.0/16 AS20057 AT&T Enterprises, LLC 65,536
155.209.0.0/16 AS2119 AKER SOLUTIONS AS 65,536
155.24.0.0/16 AS1556 Headquarters, USAISC 65,536
155.246.0.0/16 AS16889 Stevens Institute of Technology 65,536
155.97.0.0/16 AS17055 University of Utah 65,536
155.253.0.0/16 AS137 Area della Ricerca di Milano 65,536
155.132.0.0/16 AS200656 Nokia EMEA 65,536
155.170.0.0/16 AS20057 AT&T Enterprises, LLC 65,536
155.134.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.197.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.40.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.219.0.0/16 AS1540 Headquarters, USAISC 65,536
155.99.0.0/16 AS17055 University of Utah 65,536
155.33.0.0/16 AS156 Northeastern University 65,536
155.250.0.0/16 AS13167 Merck KGaA 65,536
155.155.0.0/16 AS1556 Headquarters, USAISC 65,536
155.92.0.0/16 AS11500 Milwaukee School of Engineering 65,536
155.53.0.0/16 AS158 Ericsson Inc. 65,536
155.100.0.0/16 AS17055 University of Utah 65,536
155.101.0.0/16 AS17055 University of Utah 65,536
155.109.0.0/16 AS10273 Florida Power & Light Company 65,536
155.185.0.0/16 AS137 Universita' degli Studi di Modena e Reggio Emilia 65,536
155.187.0.0/16 AS140637 Department of Climate Change Energy the Environment and Water 65,536
155.6.0.0/16 AS1637 Headquarters, USAISC 65,536
155.144.0.0/16 AS17756 Australian Postal Corporation 65,536
155.5.0.0/16 AS1637 Headquarters, USAISC 65,536
155.155.0.0/16 AS1585 Headquarters, USAISC 65,536
155.104.0.0/16 AS1906 Northrop Grumman Corp. 65,536
155.230.0.0/16 AS10052 Kyungpook National University 65,536
155.48.0.0/16 AS16481 Babson College 65,536
155.193.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.9.0.0/16 AS1540 Headquarters, USAISC 65,536
155.31.0.0/16 AS11809 Embry-Riddle Aeronautical University 65,536
155.38.0.0/16 AS16509 Amazon Technologies Inc. 65,536
155.153.0.0/16 AS1540 Headquarters, USAISC 65,536
155.151.0.0/16 AS1540 Headquarters, USAISC 65,536
155.60.0.0/16 AS10235 NATIONAL AUSTRALIA BANK LIMITED 65,536
155.155.0.0/16 AS1554 Headquarters, USAISC 65,536
155.143.0.0/16 AS135887 Telstra Limited 65,536
155.3.0.0/16 AS21853 New Brunswick Power Holding Corporation 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

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

IP Address ASN Details
155.163.248.79 AS20057 AT&T Enterprises, LLC 58.63ms from Santa Clara, US
155.163.195.4 AS20057 AT&T Enterprises, LLC 2.97ms from Ashburn, US
155.163.232.40 AS20057 AT&T Enterprises, LLC 26.87ms from Houston, US
155.163.208.36 AS20057 AT&T Enterprises, LLC 32.33ms from Ashburn, US
155.163.235.142 AS20057 AT&T Enterprises, LLC 26.95ms from Houston, US
155.163.192.190 AS20057 AT&T Enterprises, LLC 37.16ms from Atlanta, US
155.163.194.72 AS20057 AT&T Enterprises, LLC 2.29ms from Ashburn, US
155.163.246.1 AS20057 AT&T Enterprises, LLC 71.30ms from San Jose, US
155.163.236.198 AS20057 AT&T Enterprises, LLC 2.46ms from Ashburn, US
155.163.233.241 AS20057 AT&T Enterprises, LLC 25.61ms from Houston, US
155.163.239.6 AS20057 AT&T Enterprises, LLC 27.19ms from Houston, US
155.163.234.67 AS20057 AT&T Enterprises, LLC 22.92ms from Houston, US
155.163.237.1 AS20057 AT&T Enterprises, LLC 38.91ms from Houston, US
155.163.250.103 AS20057 AT&T Enterprises, LLC 68.36ms from Redding, 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
20.8.126.0 AS8075 Microsoft Corporation 0.27ms from Amsterdam, NL
3.223.96.112 AS14618 Amazon.com, Inc. 0.52ms from Ashburn, US
48.194.2.0 AS8075 Microsoft Corporation 0.53ms from Ashburn, US
40.137.132.0 AS7029 Windstream Communications LLC 0.50ms from Chicago, US
129.119.161.0 AS1832 Southern Methodist University 1.04ms from Dallas, US
54.155.12.48 AS16509 Amazon.com, Inc. 0.15ms from Dublin, IE
35.220.196.208 AS396982 Google LLC 0.13ms from Hong Kong, HK
47.146.91.160 AS5650 Frontier Communications of America, Inc. 2.02ms from Los Angeles, US
16.51.51.16 AS16509 Amazon.com, Inc. 0.65ms from Melbourne, AU
179.28.94.128 AS6057 Administracion Nacional de Telecomunicaciones 15.41ms from Montevideo, UY
84.142.33.160 AS3320 Deutsche Telekom AG 5.88ms from Nuernberg, DE
81.254.0.224 AS3215 Orange S.A. 4.56ms from Paris, FR
211.34.39.80 AS4766 Korea Telecom 3.06ms from Seoul, KR
203.72.68.16 AS1659 Taiwan Academic Network (TANet) Information Center 2.24ms from Taipei, TW
18.208.232.96 AS14618 Amazon.com, Inc. 0.96ms from Ashburn, US
107.173.238.96 AS36352 HostPapa 0.12ms from Buffalo, US
97.130.43.224 AS6167 Verizon Business 11.63ms from Chicago, US
184.30.222.208 AS16625 Akamai Technologies, Inc. 0.20ms from Frankfurt am Main, DE
2.122.238.112 AS5607 Sky UK Limited 0.98ms from London, GB
185.139.181.64 AS203462 NOVACONN SRL 0.15ms from Milan, IT
79.14.91.0 AS3269 Telecom Italia S.p.A. 0.67ms from Milan, IT
88.32.73.16 AS3269 Telecom Italia S.p.A. 4.23ms from Milan, IT
114.218.5.112 AS140292 CHINATELECOM Jiangsu province Suzhou 5G network 6.04ms from Nanjing, CN
84.32.224.224 AS9009 M247 Europe SRL 0.35ms from New York City, US
104.73.24.128 AS16625 Akamai Technologies, Inc. 0.23ms from Pittsburgh, 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 -m16 155.163.87.6
traceroute to 155.163.87.6 (155.163.87.6): 16 hops max, 52 byte packets
5 [AS6762] 195.22.195.49 83.163 ms
6 [AS7018] 192.205.36.229 81.122 ms
7 *
8 *
9 *
10 *
11 [AS7018] 12.90.96.26 97.87 ms
12 *
13 [AS20057] 209.183.33.233 109.038 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Leeds, GB
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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