166.204.0.0/20

AS20057 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS20057
Parent Range	166.204.0.0/17
Registry	ARIN
ID	AEL-360

WHOIS Details

NetHandle:      NET-166-183-0-0-1
OrgID:          AEL-360
Parent:         NET-166-0-0-0-0
NetName:        AEL-360
NetRange:       166.183.0.0 - 166.209.255.255
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 166.204.0.0/20

Range	ASN	Company	Num of IPs
166.204.0.0/17	AS20057	AT&T Enterprises, LLC	32,768

Nearby Ranges

BGP prefixes that overlap with 166.204.0.0/16

Range	ASN	Company	Num of IPs
166.204.0.0/17	AS20057	AT&T Enterprises, LLC	32,768
166.204.64.0/20	AS20057	AT&T Enterprises, LLC	4,096
166.204.16.0/20	AS20057	AT&T Enterprises, LLC	4,096
166.204.112.0/20	AS20057	AT&T Enterprises, LLC	4,096
166.204.32.0/21	AS20057	AT&T Enterprises, LLC	2,048
166.204.100.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.108.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.48.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.80.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.44.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.84.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.104.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.40.0/22	AS20057	AT&T Enterprises, LLC	1,024
166.204.56.0/23	AS20057	AT&T Enterprises, LLC	512
166.204.52.0/23	AS20057	AT&T Enterprises, LLC	512
166.204.94.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.90.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.55.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.98.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.61.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.58.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.54.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.63.0/24	AS20057	AT&T Enterprises, LLC	256
166.204.60.0/24	AS20057	AT&T Enterprises, LLC	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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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
192.145.74.84	AS134743 Anycast Holdings Pty Ltd	4.37ms from Adelaide, AU
5.132.118.180	AS50266 Odido Netherlands B.V.	4.89ms from Amsterdam, NL
64.227.151.68	AS14061 DigitalOcean, LLC	0.30ms from Bengaluru, IN
5.32.15.148	AS15802 Emirates Integrated Telecommunications Company PJSC	2.21ms from Abu Dhabi, AE
114.240.62.84	AS4808 China Unicom Beijing Province Network	3.78ms from Beijing, CN
91.20.38.116	AS3320 Deutsche Telekom AG	5.91ms from Frankfurt am Main, DE
93.201.13.68	AS3320 Deutsche Telekom AG	6.04ms from Frankfurt am Main, DE
59.111.183.132	AS45062 Netease-Network	3.56ms from Hangzhou, CN
122.225.83.20	AS58461 CT-HangZhou-IDC	5.83ms from Hangzhou, CN
190.236.233.36	AS6147 Telefonica del Peru S.A.A.	1.36ms from Lima, PE
23.240.205.132	AS20001 Charter Communications Inc	4.28ms from Los Angeles, US
72.106.3.84	AS6167 Verizon Business	12.36ms from Los Angeles, US
20.115.219.196	AS8075 Microsoft Corporation	0.27ms from Quincy, US
79.202.34.180	AS3320 Deutsche Telekom AG	3.72ms from Berlin, DE
106.75.145.4	AS58466 CHINANET Guangdong province network	2.43ms from Guangzhou, CN
217.112.5.36	AS12714 PJSC MegaFon	15.23ms from Yekaterinburg, RU
9.169.65.52	AS8075 Microsoft Corporation	0.33ms from Ashburn, US
149.249.209.68	AS205806 Stadtwerke Neustrelitz GmbH	3.25ms from Berlin, DE
104.199.254.68	AS396982 Google LLC	0.12ms from Chang-hua, TW
78.137.62.68	AS25133 LLC "McLaut-Invest"	3.07ms from Kyiv, UA
117.97.140.116	AS24560 Bharti Airtel Ltd., Telemedia Services	11.26ms from Chennai, IN
90.170.65.20	AS12479 Orange Espagne SA	2.46ms from Madrid, ES
154.242.219.180	AS36947 Telecom Algeria	13.59ms from Madrid, ES
58.99.80.148	AS18049 Taiwan Infrastructure Network Technologie	4.07ms from Taipei, TW
161.111.159.244	AS766 RedIRIS Autonomous System	13.92ms from Madrid, ES

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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