International Dial-up Providers

Earthlink.net

http://help.earthlink.net/access/ ...and fill in the country to find access numbers within that country.

adding.
If you were refering to international countries, check ibm att global services.
http://www.att.com/globalnetwork/services/bis.html

You can easily connect to AT&T ' s global network through more than 2,000 worldwide points of presence in more than 50 countries with local language help desks. A single connection can support multiple applications so you can expand the scope of your IT needs as your company grows.

Leopold