Autonomous System details
AS19957
AT&T Enterprises, LLC — att.net
Summary
| Country |
 United States
|
| Organization | AT&T Enterprises, LLC |
| Domain | att.net |
| Number of IPv4 | 276,480 |
| Number of IPv6 | 8.5282× 1028 |
| AS Type | ISP |
| Registry | ARIN |
| Allocated | March 05, 2003 (about 22 years ago) |
| Updated | February 12, 2025 (about 2 months ago) |
IP Ranges
AS19957 announces 36 IPv4 ranges and 14 IPv6 ranges.
That's a total of 276,480 IPv4 addresses and 8.5282× 1028 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 12.204.201.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 12.204.206.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 12.204.208.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 12.204.209.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 12.204.216.0/21 |
STATE OF TENNESSEE-NETTN
|
2,048 | ARIN | REASSIGNMENT |
| 64.79.176.0/21 |
Southwest Tennessee Community College
|
2,048 | ARIN | ALLOCATION |
| 66.4.0.0/16 |
State of Tennessee Department of Education
|
65,536 | ARIN | ALLOCATION |
| 66.4.8.0/23 |
State of Tennessee Department of Education
|
512 | ARIN | ALLOCATION |
| 66.4.9.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.14.0/23 |
State of Tennessee Department of Education
|
512 | ARIN | ALLOCATION |
| 66.4.16.0/23 |
State of Tennessee Department of Education
|
512 | ARIN | ALLOCATION |
| 66.4.18.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.19.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.27.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.28.0/22 |
State of Tennessee Department of Education
|
1,024 | ARIN | ALLOCATION |
| 66.4.32.0/23 |
State of Tennessee Department of Education
|
512 | ARIN | ALLOCATION |
| 66.4.38.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.40.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.60.0/23 |
State of Tennessee Department of Education
|
512 | ARIN | ALLOCATION |
| 66.4.78.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.81.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.124.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 66.4.126.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 70.150.21.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 70.150.247.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 72.158.184.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 72.159.76.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 170.141.56.0/23 |
State of Tennessee
|
512 | ARIN | ALLOCATION |
| 170.141.60.0/23 |
State of Tennessee
|
512 | ARIN | ALLOCATION |
| 198.146.0.0/16 |
Tennessee Board of Regents
|
65,536 | ARIN | ALLOCATION |
| 206.23.0.0/16 |
Tennessee Board of Regents
|
65,536 | ARIN | ALLOCATION |
| 208.63.128.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 208.63.129.0/24 |
STATE OF TENNESSEE-NETTN
|
256 | ARIN | REASSIGNMENT |
| 208.182.0.0/16 |
State of Tennessee Department of Education
|
65,536 | ARIN | ALLOCATION |
| 208.182.101.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| 208.182.124.0/24 |
State of Tennessee Department of Education
|
256 | ARIN | ALLOCATION |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2604:f980::/32 |
AT&T Services, INC
|
7.9228× 1028 | ARIN | ALLOCATION |
| 2604:f980:2100::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:2500::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:2600::/40 |
AT&T Services, INC
|
3.0949× 1026 | ARIN | ALLOCATION |
| 2604:f980:2d00::/40 |
AT&T Services, INC
|
3.0949× 1026 | ARIN | ALLOCATION |
| 2604:f980:3000::/36 |
AT&T Services, INC
|
4.9518× 1027 | ARIN | ALLOCATION |
| 2604:f980:4240::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:4300::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:4360::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:4380::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:4390::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:4480::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:4500::/44 |
AT&T Services, INC
|
1.9343× 1025 | ARIN | ALLOCATION |
| 2604:f980:5100::/40 |
AT&T Services, INC
|
3.0949× 1026 | ARIN | ALLOCATION |
Peers
AS19957 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.
Upstreams
AS19957 connects to the global Internet via at least 2 upstream providers. In this setup, AS19957 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS19957 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.