api.uniandes.edu.co
An undocumented API host on the university's own registrable domain. It resolves through Cloudflare and answers HTTP 403 with the Cloudflare WAF "Attention Required!" page on every path attempted — /, /docs, /swagger, /openapi.json, /api-docs, /health, /v1 and /.well-known/openapi. The 403 is a configured block rather than an unconfigured hostname, so something is being served behind it, but nothing about what it serves is publicly discoverable. Recorded as a finding, not as a usable API: no endpoint, schema or capability is claimed for it because none could be observed.