Bol.bg - Company offers dial-up and leased lines access, web design and hosting services.
BTC Net - Provides leased lines, web hosting, dedicated server, co-location, and VPN services.
Bulgaria Online - Provides dial-up, ISDN and leased lines access, web design, hosting, and technical support.
Digital Systems Ltd - Offers a wide range of network-based services to many companies, universities and individual users.
Internet Society Bulgaria - Non-governmental organization aimed to help in popularization of Internet in Bulgaria.
ITDNetwork - Offers leased lines, co-location, hosting, and domain registration services.
M-Tel Ltd. - Service from the Bulgarian GSM operator: backbone connectivity, leased lines and dial-up, access via mobile phones.
NetBG.com - Provides dial-up access, leased line, and wireless solutions, web design and hosting.
NetIsSat - Backbone connectivity, leased lines and dialup services in Sofia.
Orbitel - Offers long distance phone calls over IP, access via dialup, ISDN, leased lines, and hosting.
ProLink Ltd. - Provides access via dial-up, ISDN, and leased lines, offers web hosting services.
Register.bg - Provides the registration and support of domain names in the top-level domain .bg, includes whois search and application form.
RTC Mobikom - Offers telecommunication services countrywide. Customers may buy, rent or lease mobile phones and pagers. Also provides cellular, paging, fixed and Internet services.