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:      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

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

IP Address	ASN	Details
166.203.32.40	AS20057 AT&T Enterprises, LLC	`21.18ms` 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
81.207.36.212	AS1136 KPN B.V.	`1.18ms` from Amsterdam, NL
54.186.158.68	AS16509 Amazon.com, Inc.	`0.22ms` from Boardman, US
78.96.21.196	AS12302 Vodafone Romania S.A.	`14.85ms` from Bucharest, RO
172.125.182.132	AS7018 AT&T Enterprises, LLC	`9.35ms` from Chicago, US
62.88.255.36	AS25387 Goteborg Kommun	`0.80ms` from Goeteborg, SE
62.220.252.52	AS199508 S1 Networks Oy	`0.64ms` from Helsinki, FI
63.110.102.196	AS701 Verizon Business	`1.60ms` from Los Angeles, US
34.111.117.84	AS396982 Google LLC	`0.07ms` from Melbourne, AU
126.207.18.100	AS17676 SoftBank Corp.	`3.94ms` from Osaka, JP
189.112.62.148	AS16735 ALGAR TELECOM S/A	`1.35ms` from Osasco, BR
83.199.75.84	AS3215 Orange S.A.	`5.34ms` from Paris, FR
81.49.250.116	AS3215 Orange S.A.	`4.02ms` from Paris, FR
176.178.56.116	AS5410 Bouygues Telecom SA	`14.18ms` from Paris, FR
209.46.27.164	AS400589 LTC Connect	`11.53ms` from Atlanta, US
91.104.185.116	AS213155 Yettel Hungary Ltd.	`13.91ms` from Budapest, HU
132.181.99.4	AS9432 University of Canterbury	`0.84ms` from Christchurch, NZ
200.91.167.148	AS11830 Instituto Costarricense de Electricidad y Telecom.	`1.70ms` from Curridabat, CR
14.254.166.212	AS45899 VNPT Corp	`7.45ms` from Da Nang, VN
68.40.186.132	AS7922 Comcast Cable Communications, LLC	`8.63ms` from Flint, US
3.79.237.212	AS16509 Amazon.com, Inc.	`0.15ms` from Frankfurt am Main, DE
120.240.137.244	AS56040 China Mobile communications corporation	`6.48ms` from Guangzhou, CN
2.124.230.100	AS5607 Sky UK Limited	`4.00ms` from London, GB
80.24.116.36	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.17ms` from Madrid, ES
197.249.233.212	AS25139 TVCABO - Comunicacoes Multimedia, Lda	`1.13ms` from Maputo, MZ
158.222.159.52	AS12271 Charter Communications Inc	`8.25ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f4 -m14 166.203.45.81

traceroute to 166.203.45.81 (166.203.45.81): 14 hops max, 52 byte packets

4 [AS3356] 8.243.191.133 2.649 ms

5 [AS3356] 4.69.216.145 119.816 ms

6 [AS3356] 4.68.62.226 120.599 ms

7 *

8 *

9 *

10 *

11 [AS20057] 166.216.138.29 123.459 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Santiago, CL

On March 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.

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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