The Bat is a windows email client...
Address is in a pool of dynamic addresses. I just ran nmap on it (port scanner), looks like it is hooked up directly to a windows box with no router/firewall/etc. running.
Code:
root@host:~# nmap -sS -O -PI -PT 71.226.82.73
Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2007-01-18 13:04 EST
Interesting ports on c-71-226-82-73.hsd1.fl.comcast.net (71.226.82.73):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
135/tcp filtered msrpc
136/tcp filtered profile
137/tcp filtered netbios-ns
138/tcp filtered netbios-dgm
139/tcp filtered netbios-ssn
445/tcp filtered microsoft-ds
1025/tcp open NFS-or-IIS
1026/tcp open LSA-or-nterm
1080/tcp filtered socks
5000/tcp open UPnP
Device type: general purpose
Running: Microsoft Windows 95/98/ME|NT/2K/XP
OS details: Microsoft Windows Millennium Edition (Me), Windows 2000 Pro or Advanced Server, or Windows XP
Nmap finished: 1 IP address (1 host up) scanned in 6.454 seconds