7 – echo
9 - discard
11 – systat
13 - daytime
17 - quote of the day
19 - chargen
20 - ftp - data
21 - ftp - control
22 - ssh
23 - telnet
25 - smtp mail transfer
37 - timeserver
42 - nameserver
43 - nicname whois
53 - dommainlein name server
69 - tftp trivial file transfer
70 - gopher
79 - finger
80 - http
88 - [...]

http://oblivioncoders.net/2008/09/12/spisok-standartnyx-portov/