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AS19957
AS19957
· AT&T Enterprises, LLC
42
IPv4 prefixes
420,352
IPv4 addresses
12
IPv6 prefixes
🇺🇸 US
Country
Summary
AS number
AS19957
Name
AT&T Enterprises, LLC
Country
🇺🇸 United States
Type
ARIN
Category
business
Announced
54 prefixes
Updated
2026-06-05
Announced IPv4 prefixes (42)
Prefix
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
64.79.176.0/21
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
70.150.21.0/24
70.150.247.0/24
72.158.184.0/24
72.159.76.0/24
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
208.63.129.0/24
208.182.0.0/16
208.182.101.0/24
208.182.124.0/24
Announced IPv6 prefixes (12)
Prefix
2604:f980:2100::/44
2604:f980:2500::/44
2604:f980:2600::/40
2604:f980:2d00::/40
2604:f980:3000::/36
2604:f980:4240::/44
2604:f980:4300::/44
2604:f980:4360::/44
2604:f980:4380::/44
2604:f980:4390::/44
2604:f980:4480::/44
2604:f980:5100::/40