34SP - UK based budget hosting offering PHP, MySQL and FrontPage extensions. Profile, product range, user guides and support forum. - http://www.34sp.com/
3DWebStudios.com - Windows web hosting, including ASP.NET support. Also Linux web hosting, web design, e-commerce, multimedia and promotion services. - http://www.3dwebstudios.com/
3xDHosting - Offers Windows 2000 shared hosting, e-mail-only hosting, domain name registration and parking. - http://www.3xdhosting.com
3Essentials Web Hosting - Providing shared web hosting with support for FrontPage Extensions, MySQL, MS Access, and POP3. Also includes templates and search engine submission services. - http://www.3essentials.com
3D Host - Offers shared hosting for short movies, virtual reality and gaming. Based in Pennsylvania, United States. - http://www.3dhost.net/
323 Interactive - Internet service provider offering web hosting, design, server co-location and networking. - http://www.323interactive.com