University of Texas Southwestern Medical Center
AS13998 is University of Texas Southwestern Medical Center (utsouthwestern.edu). It announces 85,504 IPv4 addresses in 13 prefixes, and 1 IPv6 prefixes.
United States· ARIN· allocated 1999-10-01· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States85,504 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- SWMED
- name
- University of Texas Southwestern Medical Center
- org
- USMCAD
- org name
- University of Texas Southwestern Medical Center
- org address
- 5323 Harry Hines, Dallas, TX, 75235-8595
- org city
- Dallas
- org country
- US
- country
- US
- source
- arin
- created
- 1999-10-01
- updated
- 2013-01-29
- abuse name
- UT Southwestern Medical Center
- abuse email
- domains@utsouthwestern.edu
- abuse phone
- +1-214-648-0642
- abuse kind
- role
- abuse city
- Dallas
- abuse country
- US
- admin name
- UT Southwestern Medical Center
- admin email
- domains@utsouthwestern.edu
- admin phone
- +1-214-648-0642
- admin kind
- role
- admin city
- Dallas
- admin country
- US
- tech name
- UT Southwestern Medical Center
- tech email
- domains@utsouthwestern.edu
- tech phone
- +1-214-648-0642
- tech kind
- role
- tech city
- Dallas
- tech country
- US
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- None here
- anyip, arnproxy, proxying0.00%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- 0.00%
- None here
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 129.112.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 129.112.109.0/24 | United States | not found | 19 | 2026-10-02 |
| 129.112.115.0/24 | United States | not found | 19 | 2026-10-02 |
| 198.215.36.0/22 | United States | valid | 19 | 2026-10-02 |
| 198.215.48.0/20 | United States | valid | 19 | 2026-10-02 |
| 198.215.96.0/20 | United States | valid | 19 | 2026-10-02 |
| 198.215.176.0/20 | United States | valid | 19 | 2026-10-02 |
| 198.241.16.0/20 | United States | not found | 19 | 2026-10-02 |
| 199.165.152.0/23 | United States | not found | 19 | 2026-10-02 |
| 199.165.154.0/24 | United States | not found | 19 | 2026-10-02 |
| 199.242.234.0/23 | United States | not found | 19 | 2026-10-02 |
| 199.242.236.0/22 | United States | not found | 19 | 2026-10-02 |
| 199.249.214.0/24 | United States | not found | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2620:0:840::/48 | United States | not found | 20 | 2026-10-02 |
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