166.193.56.0/21

AS20057 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS20057
Parent Range	166.193.0.0/17
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:        2025-07-21
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:         7277 164th Ave NE
Street:         Attn: IP Management
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2000-05-17
Updated:        2025-07-03
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:        2025-07-03
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:        2025-07-03
OfficePhone:    +1-919-319-8167
Mailbox:        abuse@att.net
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 166.193.56.0/21

Range	ASN	Company	Num of IPs
166.193.0.0/17	AS20057	AT&T Enterprises, LLC	32,768
166.192.0.0/13	AS7018	AT&T Enterprises, LLC	524,288

Nearby Ranges

BGP prefixes that overlap with 166.193.0.0/16

Range	ASN	Company	Num of IPs
166.192.0.0/13	AS7018	AT&T Enterprises, LLC	524,288
166.193.0.0/17	AS20057	AT&T Enterprises, LLC	32,768
166.193.128.0/17	AS46164	AT&T Enterprises, LLC	32,768
166.193.64.0/19	AS20057	AT&T Enterprises, LLC	8,192
166.193.122.0/23	AS20057	AT&T Enterprises, LLC	512
166.193.127.0/24	AS20057	AT&T Enterprises, LLC	256
166.193.120.0/24	AS20057	AT&T Enterprises, LLC	256

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

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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
223.27.86.5	AS38071 Aftab IT Limited.	0.53ms from Dhaka, BD
42.5.194.245	AS4837 CHINA UNICOM China169 Backbone	9.34ms from Liaoyang, CN
217.138.42.69	AS16247 M247 Ltd	0.47ms from London, GB
104.36.237.229	AS54755 Desert Winds Wireless Inc	6.08ms from Seattle, US
183.204.198.101	AS9808 China Mobile Communications Group Co., Ltd.	2.56ms from Zhengzhou, CN
69.250.73.69	AS7922 Comcast Cable Communications, LLC	7.14ms from Ashburn, US
162.191.251.37	AS21928 T-Mobile USA, Inc.	12.86ms from Chicago, US
104.178.18.181	AS7018 AT&T Enterprises, LLC	2.93ms from Dallas, US
125.20.226.85	AS9498 BHARTI Airtel Ltd.	0.82ms from Delhi, IN
37.111.153.5	AS24499 Telenor Pakistan	0.96ms from Islamabad, PK
97.106.93.85	AS33363 Charter Communications, Inc	7.88ms from Orlando, US
197.37.133.229	AS8452 TE-AS	4.12ms from Cairo, EG
27.70.227.197	AS7552 Viettel Group	13.51ms from Da Nang, VN
49.172.58.37	AS17858 LG POWERCOMM	2.44ms from Seoul, KR
222.136.139.229	AS4837 CHINA UNICOM China169 Backbone	7.77ms from Zhengzhou, CN
190.128.160.53	AS23201 Telecel S.A.	0.63ms from Asuncion, PY
31.166.70.69	AS35819 Etihad Etisalat, a joint stock company	1.96ms from Jeddah, SA
86.171.169.165	AS2856 British Telecommunications PLC	6.29ms from London, GB
86.221.104.5	AS3215 Orange S.A.	4.17ms from Marseille, FR
77.178.154.197	AS6805 Telefonica Germany GmbH & Co.OHG	12.47ms from Munich, DE
117.71.208.85	AS4134 CHINANET-BACKBONE	12.75ms from Nanchang, CN
126.111.105.69	AS17676 SoftBank Corp.	9.04ms from Osaka, JP
203.23.189.101	AS152664 CIMB Thai Bank Public Company Limited (DR)	2.66ms from Bangkok, TH
223.84.142.117	AS9808 China Mobile Communications Group Co., Ltd.	17.79ms from Changsha, CN
98.101.212.85	AS11426 Charter Communications Inc	0.59ms from Charlotte, US

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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