166.203.32.0/20

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:         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


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:      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

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

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

IP Address	ASN	Details
166.203.32.142	AS20057 AT&T Enterprises, LLC	`29.67ms` from Atlanta, US
166.203.33.104	AS20057 AT&T Enterprises, LLC	`40.34ms` from Atlanta, US
166.203.34.7	AS20057 AT&T Enterprises, LLC	`36.06ms` from Atlanta, 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
54.184.162.116	AS16509 Amazon.com, Inc.	`0.23ms` from Boardman, US
18.216.133.164	AS16509 Amazon.com, Inc.	`0.14ms` from Columbus, US
89.211.37.84	AS8781 Ooredoo Q.S.C.	`0.48ms` from Doha, QA
80.77.220.4	AS8549 Kyndryl Deutschland Aviation Industry Services GmbH	`1.11ms` from Frankfurt am Main, DE
156.250.78.212	AS142286 LUOGELANG (FRANCE) LIMITED	`0.69ms` from Hong Kong, HK
136.40.27.148	AS16591 Google Fiber Inc.	`0.67ms` from Kansas City, US
212.227.169.148	AS8560 IONOS SE	`0.45ms` from Logrono, ES
115.70.205.36	AS10143 Exetel Pty Ltd	`0.21ms` from Melbourne, AU
212.251.236.132	AS2119 Telenor Norge AS	`13.83ms` from Oslo, NO
60.212.169.20	AS4837 CHINA UNICOM China169 Backbone	`9.88ms` from Qingdao, CN
112.223.223.68	AS3786 LG DACOM Corporation	`1.92ms` from Seoul, KR
210.222.216.228	AS4766 Korea Telecom	`3.15ms` from Seoul, KR
116.210.196.84	AS4134 CHINANET BACKBONE	`4.29ms` from Wuhan, CN
61.54.42.4	AS4837 CHINA UNICOM China169 Backbone	`3.91ms` from Zhengzhou, CN
128.136.13.4	AS13649 Flexential Colorado Corp.	`9.91ms` from Ashburn, US
209.77.255.180	AS7018 AT&T Enterprises, LLC	`15.02ms` from Chicago, US
62.88.255.36	AS25387 Goteborg Kommun	`0.82ms` from Goeteborg, SE
4.187.217.228	AS8075 Microsoft Corporation	`0.14ms` from Lohogaon, IN
20.204.63.84	AS8075 Microsoft Corporation	`0.16ms` from Lohogaon, IN
86.164.239.212	AS2856 British Telecommunications PLC	`4.18ms` from London, GB
67.241.243.20	AS11351 Charter Communications Inc	`14.57ms` from New York City, US
36.45.199.36	AS4134 CHINANET BACKBONE	`15.08ms` from Qingyang, CN
24.6.52.164	AS7922 Comcast Cable Communications, LLC	`5.25ms` from San Jose, US
115.142.93.116	AS17858 LG POWERCOMM	`1.97ms` from Seoul, KR
115.187.135.244	AS38333 Symbio Networks	`14.72ms` from Sydney, AU

Traceroute

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

traceroute -a -n -q1 -f5 166.203.33.246

traceroute to 166.203.33.246 (166.203.33.246): 64 hops max, 52 byte packets

5 [AS7018] 192.205.32.9 4.759 ms

6 [AS7018] 32.130.89.14 2.468 ms

7 *

8 *

9 *

10 [AS20057] 166.216.138.29 3.616 ms

11 [AS20057] 166.185.45.172 17.409 ms

12 *

13 *

14 [AS20057] 166.203.33.246 59.174 ms

Measurement taken from

IPinfo ProbeNet in Atlanta, US

On April 13th 2026

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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