Domain Names | Meaning |
COM | Commercial organizations |
EDU | Educational institutions |
GOV | Government institutions |
MIL | Military groups |
NET | Major network support groups |
ORG | Organizations not list above |
ARPA | obsolete |
INT | International organizations |
country codes | 2-letter code per country |
reserved port numbers | 1 - 1023 |
port numbers used by system | 1024 - 5000 |
Service | Port Number |
echo | 7 |
discard | 9 |
character generation | 19 |
daytime | 13 |
time | 37 |
telnet | 23 |
gopher | 70 |
WWW | 80 |