166.203.128.0/20

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:      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:        [email protected]
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:        [email protected]
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:        [email protected]
Mailbox:        [email protected]
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

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

IP Address	ASN	Details
166.203.129.53	AS20057 AT&T Enterprises, LLC	`25.27ms` from Kansas City, US
166.203.128.198	AS20057 AT&T Enterprises, LLC	`11.39ms` from Houston, 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
101.51.51.244	AS23969 TOT Public Company Limited	`6.01ms` from Bangkok, TH
104.139.17.132	AS11426 Charter Communications Inc	`6.34ms` from Charlotte, US
218.195.46.68	AS4538 China Education and Research Network Center	`16.44ms` from Chengdu, CN
46.137.15.244	AS16509 Amazon.com, Inc.	`0.13ms` from Dublin, IE
84.141.30.52	AS3320 Deutsche Telekom AG	`6.35ms` from Duesseldorf, DE
222.189.180.116	AS4134 CHINANET-BACKBONE	`5.22ms` from Huai'an, CN
85.3.17.132	AS3303 Swisscom (Switzerland) Ltd	`0.76ms` from Lausanne, CH
193.104.218.212	AS50335 PANDA SECURITY S.L.	`6.00ms` from Madrid, ES
197.249.56.100	AS25139 TVCABO - Comunicacoes Multimedia, Lda	`1.03ms` from Maputo, MZ
117.222.121.212	AS9829 National Internet Backbone	`11.55ms` from Mumbai, IN
218.220.169.180	AS9617 JCOM Co., Ltd.	`12.82ms` from Osaka, JP
90.89.9.4	AS3215 Orange S.A.	`11.89ms` from Paris, FR
97.210.46.164	AS6167 Verizon Business	`17.06ms` from Philadelphia, US
27.203.139.228	AS4837 CHINA UNICOM China169 Backbone	`6.37ms` from Qingdao, CN
14.77.67.4	AS4766 Korea Telecom	`7.65ms` from Seoul, KR
167.172.67.36	AS14061 DigitalOcean, LLC	`0.23ms` from Singapore, SG
124.169.55.4	AS7545 TPG Telecom Limited	`1.43ms` from Sydney, AU
54.249.220.4	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP
207.61.90.4	AS577 Bell Canada	`1.54ms` from Toronto, CA
216.230.127.4	AS17054 Expedient	`3.24ms` from Ashburn, US
149.142.129.132	AS52 University of California, Los Angeles	`0.66ms` from Los Angeles, US
213.26.52.196	AS3269 Telecom Italia S.p.A.	`2.63ms` from Milan, IT
216.16.106.84	AS20412 Clarity Telecom LLC	`9.08ms` from Minneapolis, US
13.234.137.148	AS16509 Amazon.com, Inc.	`0.15ms` from Mumbai, IN
117.33.224.148	AS134768 CHINANET SHAANXI province Cloud Base network	`6.18ms` from Qingyang, CN

Traceroute

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

traceroute -a -n -q1 -f8 -m21 166.203.143.216

traceroute to 166.203.143.216 (166.203.143.216): 21 hops max, 52 byte packets

8 [AS16276] 57.128.121.52 1.4 ms

9 *

10 [AS3356] 62.67.64.112 1.317 ms

11 [AS3356] 4.69.209.110 116.369 ms

12 [AS3356] 4.68.39.2 120.722 ms

13 [AS7018] 32.130.24.46 124.951 ms

14 *

15 *

16 *

17 *

18 [AS20057] 166.147.126.37 123.34 ms

19 *

20 *

21 *

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On November 28th 2025

What are IP address ranges?

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