I thought .ac was the Academic TLD, and was wondering how this domain was registered, but it is just a ccTLD (2 letter, so has to be). .ac just happens to be the academic second level TLD of choice for many countries.
Apparently, you could have gotten a .edu before 2001 without being an accredited institution in the US.
Apparently, you could have gotten a .edu before 2001 without being an accredited institution in the US.