Autonomous System
AS13998 University of Texas Southwestern Medical Center
EducationActiveUnited StatesARIN
AS13998 (SWMED) is an education network operated by University of Texas Southwestern Medical Center in United States, registered with ARIN. It has 13 IPv4 prefixes with 86,016 addresses and 1 IPv6 prefix, which makes it the 2,536th largest of 82,558 active autonomous systems by IPv4 space.
IPv4 addresses86,016in 13 prefixes
IPv6 prefixes1≈ 1.2 × 10²⁴ addresses
Size rank#2,536of 82,558 active ASNs
Details
OrganizationUniversity of Texas Southwestern Medical Center
AS nameSWMED
Websiteutsouthwestern.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactdomains@utsouthwestern.edu
Registered1999-10-01
Last updated2013-01-29
IPv4 prefixes
13 prefixes · 86,016 addresses| Network | Addresses | First – last address |
|---|---|---|
| 129.112.0.0/16 | 65,536 | 129.112.0.0 – 129.112.255.255 |
| 198.215.48.0/20 | 4,096 | 198.215.48.0 – 198.215.63.255 |
| 198.215.96.0/20 | 4,096 | 198.215.96.0 – 198.215.111.255 |
| 198.215.176.0/20 | 4,096 | 198.215.176.0 – 198.215.191.255 |
| 198.241.16.0/20 | 4,096 | 198.241.16.0 – 198.241.31.255 |
| 198.215.36.0/22 | 1,024 | 198.215.36.0 – 198.215.39.255 |
| 199.242.236.0/22 | 1,024 | 199.242.236.0 – 199.242.239.255 |
| 199.165.152.0/23 | 512 | 199.165.152.0 – 199.165.153.255 |
| 199.242.234.0/23 | 512 | 199.242.234.0 – 199.242.235.255 |
| 129.112.109.0/24 | 256 | 129.112.109.0 – 129.112.109.255 |
| 129.112.115.0/24 | 256 | 129.112.115.0 – 129.112.115.255 |
| 199.165.154.0/24 | 256 | 199.165.154.0 – 199.165.154.255 |
| 199.249.214.0/24 | 256 | 199.249.214.0 – 199.249.214.255 |
129.112.0.0/16 198.215.48.0/20 198.215.96.0/20 198.215.176.0/20 198.241.16.0/20 198.215.36.0/22 199.242.236.0/22 199.165.152.0/23 199.242.234.0/23 129.112.109.0/24 129.112.115.0/24 199.165.154.0/24 199.249.214.0/24
IPv6 prefixes
1 prefix- 2620:0:840::/48
2620:0:840::/48
Query AS13998 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS13998&key=YOUR_API_KEY"Any address in its prefixes resolves to AS13998, with or without a key:
curl "https://api.ipapi.is/?q=129.112.0.1"Largest networks in United States
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