.com: the most common; available to anyone.

.net: primarily for network service providers, but available to anyone.

.org: primarily for organisations, but available to anyone.

.edu: reserved for educational institutions.

.gov: reserved for US government.

.mil: reserved for U.S. military.

.int: reserved for organisations established by international treaty.

.arpa: reserved for Internet infrastructure functions In addition, 244 countries and territories have two-letter suffixes such as ".us'' for the United States and ".fr'' for France. The Palestinian territories got ".ps'' this year. To raise money, some countries permit anyone in the world to use their suffixes.