nmap -p 995 64.233.167.111

Starting Nmap 4.03 ( http://www.insecure.org/nmap/ ) at 2006-07-24 15:28 AKDT
Interesting ports on 64.233.167.111:
PORT    STATE SERVICE
995/tcp open  pop3s

Nmap finished: 1 IP address (1 host up) scanned in 0.730 seconds