All ASNs

Autonomous System details for AS19957

AS19957

AT&T Enterprises, LLC

AS19957 — AT&T Enterprises, LLC

AS Name

STATE-OF-TENNESSEE-NETTN

Country

United States (US)

Website

Number of IPv4

420,352

Number of IPv6

ASN type

Business

Status

Assigned

Registry

ARIN

Allocated

March 05, 2003

Last updated

February 12, 2025

IP Ranges

42 IPv4 prefixes

Prefix	Company	Number of IPs
12.204.192.0/20	AT&T Enterprises, LLC	4,096
12.204.201.0/24	AT&T Enterprises, LLC	256
12.204.206.0/24	AT&T Enterprises, LLC	256
12.204.208.0/20	AT&T Enterprises, LLC	4,096
12.204.208.0/24	AT&T Enterprises, LLC	256
12.204.209.0/24	AT&T Enterprises, LLC	256
12.204.216.0/21	AT&T Enterprises, LLC	2,048
64.79.176.0/21	Southwest Tennessee Community College	2,048
66.4.0.0/16	State of Tennessee Department of Education	65,536
66.4.8.0/23	State of Tennessee Department of Education	512
66.4.9.0/24	State of Tennessee Department of Education	256
66.4.14.0/23	State of Tennessee Department of Education	512
66.4.16.0/23	State of Tennessee Department of Education	512
66.4.18.0/23	State of Tennessee Department of Education	512
66.4.18.0/24	State of Tennessee Department of Education	256
66.4.19.0/24	State of Tennessee Department of Education	256
66.4.27.0/24	State of Tennessee Department of Education	256
66.4.28.0/22	State of Tennessee Department of Education	1,024
66.4.32.0/23	State of Tennessee Department of Education	512
66.4.38.0/24	State of Tennessee Department of Education	256
66.4.40.0/24	State of Tennessee Department of Education	256
66.4.60.0/23	State of Tennessee Department of Education	512
66.4.78.0/24	State of Tennessee Department of Education	256
66.4.81.0/24	State of Tennessee Department of Education	256
66.4.124.0/24	State of Tennessee Department of Education	256
66.4.126.0/24	State of Tennessee Department of Education	256
70.150.21.0/24	AT&T Enterprises, LLC	256
70.150.247.0/24	AT&T Enterprises, LLC	256
72.158.184.0/24	AT&T Enterprises, LLC	256
72.159.76.0/24	STATE OF TENNESSEE-NETTN	256
170.141.56.0/23	State of Tennessee	512
170.141.60.0/23	State of Tennessee	512
170.142.0.0/16	State of Tennessee	65,536
170.143.0.0/16	State of Tennessee	65,536
198.146.0.0/16	Tennessee Board of Regents	65,536
206.23.0.0/16	Tennessee Board of Regents	65,536
208.63.128.0/20	AT&T Enterprises, LLC	4,096
208.63.128.0/24	AT&T Enterprises, LLC	256
208.63.129.0/24	AT&T Enterprises, LLC	256
208.182.0.0/16	State of Tennessee Department of Education	65,536
208.182.101.0/24	State of Tennessee Department of Education	256
208.182.124.0/24	State of Tennessee Department of Education	256

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS19957

0 peers

AS19957 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS19957

2 upstreams

AS7018 AS16473

AS19957 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS19957 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS19957

1 downstreams

AS16989

AS19957 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.