AS19957 is the autonomous system of AT&T Enterprises, LLC. It holds 291,072 IPv4 addresses in 26 prefixes, mainly in 
United States.
By IPv4 addresses the network ranks #816 worldwide and #229 of 18,202 networks in United States. That is 0.02% of the country’s IPv4 space.
The largest block is 208.182.0.0 to 208.182.255.255 with 65,536 addresses, geolocated to Nashville (North Capitol).
- IPv4 addresses
- 291,072
- IPv4 prefixes
- 26
- World rank
- #816
- Country share
- 0.02%
Addresses by country
- United States 100%
Largest blocks
- 208.182.0.0 Nashville (North Capitol)65,536
- 206.23.0.0 Nashville (Donelson)65,536
- 198.146.0.0 Nashville (Donelson)65,536
- 66.4.0.0 Nashville (North Capitol)65,536
- 12.204.201.0 New York5,888
- 208.63.128.0 Nashville (Downtown)4,096
- 74.252.160.0 Atlanta4,096
- 70.158.144.0 Atlanta4,096
Networks of similar size
- AS1237 KISTI
291,840 - AS8069 Microsoft Corporation291,328
- AS57218 "Rightel Communication Service Company PJS"
291,328 - AS25180 Exponential-E Ltd.
291,328 - AS203214 Hulum Almustakbal Company for Communication Engineering and Services Ltd
290,816 - AS12709 Melita Limited
289,792 - AS43766 Mobile Telecommunication Company Saudi Arabia Joint-Stock company
289,536 - AS1341 Rockwell Collins, Inc.289,536
IPv4 prefixes
- 12.165.35.0/24
- 12.204.192.0/21
- 12.204.201.0/24
- 12.204.202.0/23
- 12.204.204.0/22
- 12.204.208.0/20
- 12.230.239.0/24
- 64.79.182.0/23
- 65.82.99.0/24
- 66.4.0.0/16
- 68.156.24.0/21
- 70.150.21.0/24
- 70.150.247.0/24
- 70.150.248.0/21
- 70.158.144.0/20
- 72.158.184.0/24
- 72.159.76.0/24
- 74.252.160.0/20
- 74.254.176.0/22
- 74.254.180.0/24
- 170.141.56.0/23
- 170.141.60.0/23
- 198.146.0.0/16
- 206.23.0.0/16
- 208.63.128.0/20
- 208.182.0.0/16
Questions and answers
Who owns AS19957?
Autonomous system AS19957 is operated by AT&T Enterprises, LLC.
How many IP addresses does AS19957 have?
The network holds 291,072 IPv4 addresses in 26 prefixes.
Which country is AS19957 in?
The main country is United States.
How big is AS19957?
By IPv4 addresses it ranks #816 worldwide.
What is the largest address block of AS19957?
208.182.0.0 to 208.182.255.255, 65,536 addresses.