tcp/ip ports grouped by service

[conbonbur]

Hi.
Maybe a little bit off-topic but i was asking if anyone knew of a "database" or list of services that depend on certain TCP/IP ports.
Some examples:
"Microsoft Browsing" - TCP 137,138,139
"Secure Mail" - TCP 465,587,993,995
Thank you in advance.

[viragomann]

@conbonbur
Something like this:
Service Name and Transport Protocol Port Number Registry
?

Pretty comprehensive.

[darcey]

There is /etc/services (on freebsd and most linux) where port/protocol are mapped to service names.