What is @ ("at") called when giving an email address over the phone? What is "@"  "at" called when giving an email over the phone?
Is it different in different regions?  I have heard it as "XiaoLong ..." or something similar to that in Taiwan, but not sure what exactly they are saying.
I've heard at least two versions personally.

One is to use the English reading of "at".

The other is "圈(儿)a". Meaning "a" with a circle around it.

It might be different in different regions.