166.203.112.0/20

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:      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:      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

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
37.97.181.36	AS20857 Signet B.V.	`0.63ms` from Amsterdam, NL
172.255.224.180	AS7979 Servers.com, Inc.	`0.58ms` from Amsterdam, NL
222.154.22.228	AS4771 Spark New Zealand Trading Ltd.	`10.49ms` from Auckland, NZ
178.116.14.148	AS6848 Telenet BV	`9.17ms` from Brussels, BE
101.204.242.244	AS4837 CHINA UNICOM China169 Backbone	`2.54ms` from Chengdu, CN
97.184.202.68	AS6167 Verizon Business	`14.39ms` from Chicago, US
69.59.100.228	AS19108 Optimum	`0.48ms` from Dallas, US
211.97.159.84	AS4837 CHINA UNICOM China169 Backbone	`6.63ms` from Fuzhou, CN
73.139.250.84	AS7922 Comcast Cable Communications, LLC	`7.19ms` from Miami, US
158.160.17.116	AS200350 Yandex.Cloud LLC	`2.92ms` from Moscow, RU
153.221.245.132	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.27ms` from Osaka, JP
114.154.137.116	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.23ms` from Osaka, JP
38.183.90.20	AS274594 MASTER FIBRA TELECOM	`7.41ms` from Osasco, BR
201.1.95.84	AS27699 TELEFÔNICA BRASIL S.A	`4.47ms` from Osasco, BR
189.125.17.180	AS3549 Level 3 Parent, LLC	`0.69ms` from Sao Paulo, BR
170.248.119.244	AS3573 Accenture LLP	`1.19ms` from Singapore, SG
210.159.135.212	AS10013 FreeBit Co.,Ltd.	`16.95ms` from Tokyo, JP
106.136.127.52	AS2516 KDDI CORPORATION	`9.89ms` from Tokyo, JP
153.171.37.180	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.26ms` from Tokyo, JP
46.124.46.180	AS8412 T-Mobile Austria GmbH	`8.34ms` from Vienna, AT
8.53.36.4	AS3356 Level 3 Parent, LLC	`0.52ms` from Ashburn, US
73.212.77.244	AS7922 Comcast Cable Communications, LLC	`7.16ms` from Ashburn, US
51.224.204.52	AS16509 Amazon.com, Inc.	`1.00ms` from Berlin, DE
190.144.125.132	AS14080 Telmex Colombia S.A.	`0.82ms` from Bogota, CO
18.154.187.52	AS16509 Amazon.com, Inc.	`0.82ms` 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 -m15 166.203.112.170

traceroute to 166.203.112.170 (166.203.112.170): 15 hops max, 52 byte packets

3 [AS28458] 38.194.228.29 309.824 ms

4 [AS3549] 64.76.27.93 49.899 ms

5 [AS3356] 4.69.209.110 51.649 ms

6 *

7 [AS7018] 32.130.24.46 52.574 ms

8 *

9 *

10 *

11 *

12 [AS20057] 166.147.126.37 56.713 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Guadalajara, MX

On December 28th 2025

What are IP address ranges?

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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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