network-connection-service-alist

network-connection-service-alist is a variable defined in `net-utils.el'.
Its value is shown below.

Documentation:
Alist of services and associated TCP port numbers.
This list is not complete.

Value:

((echo . 7)
 (active-users . 11)
 (daytime . 13)
 (chargen . 19)
 (ftp . 21)
 (telnet . 23)
 (smtp . 25)
 (time . 37)
 (whois . 43)
 (gopher . 70)
 (finger . 79)
 (www . 80)
 (pop2 . 109)
 (pop3 . 110)
 (sun-rpc . 111)
 (nntp . 119)
 (ntp . 123)
 (netbios-name . 137)
 (netbios-data . 139)
 (irc . 194)
 (https . 443)
 (rlogin . 513))