AS19957 · AT&T Enterprises, LLC

54
IPv4 prefixes
436,224
Announced IPv4 slots
12
IPv6 prefixes
🇺🇸 US
Country

Summary

AS number
AS19957
Name
AT&T Enterprises, LLC
Country
🇺🇸 United States
Type
ARIN
Category
business
Normalized type
business
Organization domain
Unknown
Domain evidence
Unknown
Last changed
Unknown
Announced
66 prefixes
Updated
2026-06-05

IPv4 prefixes on this page (50 of 54)

Prefix
12.165.35.0/24
12.204.192.0/20
12.204.201.0/24
12.204.206.0/24
12.204.208.0/20
12.204.208.0/24
12.204.209.0/24
12.204.216.0/21
12.230.239.0/24
64.79.176.0/21
65.82.99.0/24
66.4.0.0/16
66.4.8.0/23
66.4.9.0/24
66.4.14.0/23
66.4.16.0/23
66.4.18.0/23
66.4.18.0/24
66.4.19.0/24
66.4.27.0/24
66.4.28.0/22
66.4.32.0/23
66.4.38.0/24
66.4.40.0/24
66.4.60.0/23
66.4.78.0/24
66.4.81.0/24
66.4.124.0/24
66.4.126.0/24
68.156.24.0/21
68.156.24.0/23
68.156.26.0/23
68.156.28.0/23
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
170.142.0.0/16
170.143.0.0/16
198.146.0.0/16
206.23.0.0/16
208.63.128.0/20
208.63.128.0/24

Address slots sum announced prefixes; overlapping routes count separately.