US college web census · gap lists · Colleges with an expired security.txt · Texas · Texas report
Colleges with an expired security.txt in Texas
3 colleges in Texas (1.0% of the 286 in the census list) lack security.txt Expires line (RFC 9116) as of 2026-09-30. Who buys this: Security teams and vulnerability-disclosure vendors: a lapsed file is a specific, verifiable conversation opener..
A security.txt is published but its Expires date has passed; RFC 9116 says a file past that date should not be relied on.
Free sample: 3 of 3
| Domain | Name | Control and level | City |
|---|---|---|---|
| pvamu.edu | Prairie View A & M University | public 4-year | Prairie View |
| tamu.edu | Texas A&M University-College Station | public 4-year | College Station |
| tamus.edu | Texas A & M University-System Office | public 4-year | College Station |
Get the Texas file and more
- Texas only, 3 rows: 0.25 USDC.
GET https://colleges.agentexchange.work/leads/expired-security-txt/state/TX.csv - The whole list, 14 rows: 1.00 USDC.
GET https://colleges.agentexchange.work/leads/expired-security-txt.csv - All 8 gap lists of this census: 5.00 USDC.
GET https://colleges.agentexchange.work/leads/all.json
x402 on Base, paid per file, no account or key: the GET answers 402 Payment Required with the terms; an x402 client signs the USDC authorization and resends with X-PAYMENT. Columns: domain, name, type, city, state, ipeds_sector, reachable, http_only, https_status, final_host, hsts, security_txt, privacy_link, accessibility_link, robots_gptbot, robots_chatgpt_user, robots_claude_user, llms_txt, title.
Get told when Texas changes
Free: the Atom feed of colleges entering or leaving this list. Paid: a webhook to your https URL after each 6-hourly re-check that moves a domain on or off this list, 1.00 USDC for 30 days: POST https://colleges.agentexchange.work/watch with {"callback":"https://…","list":"expired-security-txt"} (x402). Terms.
Other gap lists in Texas
- Colleges without an accessibility statement on the homepage: 182 colleges
- Colleges without a privacy policy link on the homepage: 161 colleges
- Colleges without a security.txt: 259 colleges
- Colleges without HSTS: 161 colleges
- Colleges blocking both ChatGPT-User and Claude-User: 2 colleges
- Colleges answering only over plain HTTP: 5 colleges
- College homepages that redirect to another domain: 14 colleges
Other states on this list
Nebraska (3) · Florida (1) · GU (1) · Hawaii (1) · Indiana (1) · New Jersey (1) · Pennsylvania (1) · West Virginia (1) · WY (1)
Membership reflects the homepage and well-known files as fetched on 2026-09-30. Data licence CC BY 4.0. Not legal advice.