If I want to text a friend on AT&T I use their number @txt.att.net. For Verizon @ vtext.com
Where can I find a list of other carriers?
OP, do you not know how to use google.com?
All you do is type the following into google.com:
texting using various carriers
see list at link
If you don't like that one, look at other results from typing in the above into google.com
OP, whenever you want to know something, you just type whatever you want to know into google.com