166.203.0.0/20

AS20057 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS20057
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:        2025-10-29
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:        2025-08-18
OfficePhone:    +1-888-510-5545
Mailbox:        ipadmin@att.com
Mailbox:        ipadmin@semail.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:        2025-08-18
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

Nearby Ranges

BGP prefixes that overlap with 166.203.0.0/16

No nearby ranges found.

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

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
197.134.110.148	AS24835 Vodafone Data	`13.16ms` from Cairo, EG
209.194.232.164	AS3549 Level 3 Parent, LLC	`1.35ms` from Charlotte, US
93.116.150.20	AS8926 Moldtelecom SA	`4.71ms` from Chisinau, MD
3.21.249.36	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
176.96.118.4	AS8649 ZeXoTeK IT-Services GmbH	`0.93ms` from Frankfurt am Main, DE
212.151.101.100	AS1257 Tele2 Sverige AB	`0.49ms` from Goeteborg, SE
36.140.104.244	AS9808 China Mobile Communications Group Co., Ltd.	`2.90ms` from Kunming, CN
137.174.38.100	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.39ms` from London, GB
87.115.67.100	AS6871 Plusnet	`6.31ms` from London, GB
45.49.61.84	AS20001 Charter Communications Inc	`6.08ms` from Los Angeles, US
12.22.208.52	AS7018 AT&T Enterprises, LLC	`2.68ms` from Los Angeles, US
185.118.52.164	AS201942 Soltia Consulting SL	`0.46ms` from Madrid, ES
27.4.135.148	AS17488 Hathway IP Over Cable Internet	`8.87ms` from Mumbai, IN
65.35.190.244	AS33363 Charter Communications, Inc	`12.12ms` from Orlando, US
52.137.109.116	AS8075 Microsoft Corporation	`0.31ms` from Quincy, US
200.239.138.52	AS1916 Rede Nacional de Ensino e Pesquisa	`8.25ms` from Rio de Janeiro, BR
112.151.146.180	AS17858 LG POWERCOMM	`1.59ms` from Seoul, KR
222.112.194.36	AS4766 Korea Telecom	`1.24ms` from Seoul, KR
202.120.116.36	AS4538 China Education and Research Network Center	`2.00ms` from Shanghai, CN
182.169.167.36	AS2527 Sony Network Communications Inc.	`1.58ms` from Tokyo, JP
154.249.7.164	AS36947 Telecom Algeria	`10.36ms` from Algiers, DZ
66.42.89.132	AS20473 The Constant Company, LLC	`0.11ms` from Atlanta, US
49.226.222.132	AS9500 One New Zealand Group Limited	`19.45ms` from Auckland, NZ
121.242.190.196	AS4755 TATA Communications formerly VSNL is Leading ISP	`0.49ms` from Chennai, IN
157.248.100.244	AS26190 Sentry Insurance a Mutual Company	`1.30ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 -f3 -m13 166.203.10.37

traceroute to 166.203.10.37 (166.203.10.37): 13 hops max, 52 byte packets

3 [AS3356] 4.69.209.114 112.56 ms

4 [AS3356] 4.68.39.2 114.754 ms

5 [AS7018] 32.130.24.46 117.798 ms

6 *

7 *

8 *

9 *

10 [AS20057] 166.147.126.36 124.226 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On November 14th 2025

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