Bhutan is a leading ISP in the country that has the name: Druknet. It's a brand owned by Bhutan Telecom. It delivers mainly a dial-up service, at an affordable cost. This ISP has a good anti-virus software and customers are very often aiming for virus attacks from outside the Bhutan. Most government offices in here have DrukNet's Internet. It's restricted for public bodies.
Druknet offers three tariffs with circuit bandwidth up to 2 Mb/s for Home, Office and Enterprise use. Data uploads limits are starting from 4GB and ends at 25GB per month. Moreover, if you need more MB when you overcome the limit, you can freely buy more data at affordable prices.