166.137.48.0/21

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-166-128-0-0-1
OrgID:          AEL-360
Parent:         NET-166-0-0-0-0
NetName:        AEL-360
NetRange:       166.128.0.0 - 166.138.255.255
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:        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


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

Nearby Ranges

BGP prefixes that overlap with 166.137.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
75.137.113.37	AS20115 Charter Communications LLC	`11.64ms` from Atlanta, US
4.152.32.69	AS8075 Microsoft Corporation	`0.19ms` from Boydton, US
94.27.198.133	AS5483 Magyar Telekom Plc.	`1.01ms` from Budapest, HU
59.145.39.149	AS9498 BHARTI Airtel Ltd.	`0.87ms` from Chennai, IN
76.92.159.165	AS11427 Charter Communications Inc	`19.42ms` from Dallas, US
163.0.87.117	AS17816 China Unicom IP network China169 Guangdong province	`5.28ms` from Guangzhou, CN
122.34.195.101	AS17858 LG POWERCOMM	`2.06ms` from Incheon, KR
122.168.227.85	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.42ms` from Indore, IN
47.148.117.165	AS5650 Frontier Communications of America, Inc.	`2.46ms` from Los Angeles, US
37.223.144.213	AS12430 VODAFONE ESPANA S.A.U.	`6.38ms` from Marseille, FR
131.119.17.165	AS3356 Level 3 Parent, LLC	`0.36ms` from Miami, US
171.108.221.197	AS4134 CHINANET-BACKBONE	`0.84ms` from Nanning, CN
216.132.231.53	AS11696 Fusion, LLC	`0.61ms` from New York City, US
168.205.161.213	AS263740 Corporacion Laceibanetsociety	`1.49ms` from New York City, US
79.254.126.133	AS3320 Deutsche Telekom AG	`2.44ms` from Nuernberg, DE
123.243.22.149	AS7545 TPG Telecom Limited	`1.33ms` from Perth, AU
104.246.102.165	AS6128 Cablevision Systems Corp.	`2.69ms` from Piscataway, US
46.120.9.37	AS12400 Partner Communications Ltd.	`1.40ms` from Rosh Ha‘Ayin, IL
154.67.64.37	AS21351 Canal + Telecom SAS	`2.68ms` from Saint-Denis, RE
201.76.29.21	AS28573 Claro NXT Telecomunicacoes Ltda	`2.11ms` from Sao Paulo, BR
172.232.168.85	AS63949 Akamai Connected Cloud	`0.37ms` from Seattle, US
128.95.113.101	AS73 University of Washington	`2.42ms` from Seattle, US
211.169.79.213	AS3786 LG DACOM Corporation	`6.67ms` from Seoul, KR
121.149.197.165	AS4766 Korea Telecom	`7.17ms` from Seoul, KR
111.80.57.149	AS17421 Mobile Business Group	`6.79ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -f3 -m7 166.137.51.2

traceroute to 166.137.51.2 (166.137.51.2): 7 hops max, 52 byte packets

3 [AS3257] 195.72.82.241 0.206 ms

4 [AS3257] 213.200.112.173 68.526 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in London, GB

On February 7th 2026

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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