166.131.128.0/21

AS20057 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS20057
Parent Range	166.131.0.0/16
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:        2025-07-21
OrgAdminHandle: ZS44-ARIN
OrgTechHandle:  ICC-ARIN
OrgTechHandle:  ZS44-ARIN
OrgAbuseHandle: ABUSE7-ARIN
OrgRoutingHandle:   ROUTI59-ARIN
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:        2025-07-03
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:        2025-07-03
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:        2025-07-03
OfficePhone:    +1-919-319-8167
Mailbox:        abuse@att.net
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 166.131.128.0/21

Range	ASN	Company	Num of IPs
166.131.0.0/16	AS20057	AT&T Enterprises, LLC	65,536
166.128.0.0/14	AS20057	AT&T Enterprises, LLC	262,144

Nearby Ranges

BGP prefixes that overlap with 166.131.0.0/16

Range	ASN	Company	Num of IPs
166.128.0.0/14	AS20057	AT&T Enterprises, LLC	262,144
166.131.0.0/16	AS20057	AT&T Enterprises, LLC	65,536
166.131.118.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.176.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.122.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.152.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.124.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.180.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.240.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.154.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.120.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.188.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.174.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.248.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.164.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.138.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.182.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.252.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.156.0/23	AS20057	AT&T Enterprises, LLC	512
166.131.233.0/24	AS20057	AT&T Enterprises, LLC	256
166.131.228.0/24	AS20057	AT&T Enterprises, LLC	256
166.131.237.0/24	AS20057	AT&T Enterprises, LLC	256
166.131.226.0/24	AS20057	AT&T Enterprises, LLC	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

1,020 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
166.131.130.135	AS20057 AT&T Enterprises, LLC	14.41ms from Miami, US
166.131.131.149	AS20057 AT&T Enterprises, LLC	17.45ms from Atlanta, US
166.131.128.177	AS20057 AT&T Enterprises, LLC	14.78ms from Miami, US
166.131.133.7	AS20057 AT&T Enterprises, LLC	14.42ms from Miami, US
166.131.129.164	AS20057 AT&T Enterprises, LLC	20.41ms from Atlanta, US
166.131.132.144	AS20057 AT&T Enterprises, LLC	21.60ms from Atlanta, US
166.131.134.127	AS20057 AT&T Enterprises, LLC	14.70ms 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
3.129.156.133	AS16509 Amazon.com, Inc.	0.15ms from Columbus, US
69.252.89.101	AS7922 Comcast Cable Communications, LLC	3.27ms from Flint, US
80.81.0.165	AS8767 M-net Telekommunikations GmbH	3.11ms from Frankfurt am Main, DE
14.187.37.133	AS45899 VNPT Corp	1.45ms from Ho Chi Minh City, VN
150.109.117.85	AS132203 Tencent Building, Kejizhongyi Avenue	0.45ms from Hong Kong, HK
18.163.53.37	AS16509 Amazon.com, Inc.	0.13ms from Hong Kong, HK
12.245.11.133	AS7018 AT&T Enterprises, LLC	1.70ms from Los Angeles, US
68.193.221.149	AS6128 Cablevision Systems Corp.	12.73ms from New York City, US
211.197.10.133	AS4766 Korea Telecom	0.76ms from Seoul, KR
175.116.159.181	AS9318 SK Broadband Co Ltd	1.31ms from Seoul, KR
62.2.28.229	AS6730 Sunrise GmbH	1.23ms from Zuerich, CH
23.165.64.69	AS399611 OmniPoint Internet	6.17ms from Atlanta, US
76.129.247.69	AS7922 Comcast Cable Communications, LLC	18.59ms from Atlanta, US
175.7.212.37	AS4134 CHINANET-BACKBONE	8.73ms from Changsha, CN
93.227.70.181	AS3320 Deutsche Telekom AG	7.55ms from Duesseldorf, DE
59.152.229.21	AS9381 HKBN Enterprise Solutions HK Limited	0.85ms from Hong Kong, HK
171.61.211.213	AS24560 Bharti Airtel Ltd., Telemedia Services	2.22ms from Hyderabad, IN
180.107.213.101	AS4134 CHINANET-BACKBONE	6.35ms from Shanghai, CN
94.132.221.229	AS2860 NOS COMUNICACOES, S.A.	6.37ms from Braga, PT
65.126.114.101	AS36515 Allens Communications	16.09ms from Dallas, US
181.204.196.245	AS27831 Colombia Móvil	10.90ms from Medellin, CO
20.199.38.149	AS8075 Microsoft Corporation	0.17ms from Paris, FR
85.85.163.213	AS15704 XTRA TELECOM S.A.	1.17ms from Barcelona, ES
184.64.53.245	AS6327 Shaw Communications Inc.	4.52ms from Calgary, CA
24.177.167.53	AS20115 Charter Communications LLC	6.67ms from Minneapolis, US

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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