Mexico's Federal Telecommunications Commission "Cofetel" has published the Mexican AM station list in .PDF form again, posted March 22, 2012. This is a rare event that seems to happen only every 6-18 months. The data is up-to-date as of February 29 (yes this is a leap year).
Get it at the Cofetel site.
No official Mexican AM database in downloadable form, like the FCC database, is evident. It would be nice to have this in readable format in order to incorporate it into a program, like my Radio Data MW program. If someone knows of a link to an official Mexican governmental source, please let me know.
The supposed "official" Mexican governmental link to the AM station list (again in .PDF form) continues to return 503 Service Temporarily Unavailable, and has done so for at least a couple of years. This, I'm sure, was simply a copy of the Federal Telecommunications Commission .PDF. Perhaps we should start recognizing Cofetel as the official source from now on.