'Whois" connected to my network

[Kevin Martin]

Jim wrote:
> # netstat -vat
>
> tcp        0      0 172.16.1.33:41836          
> adsl-76-241-133-81.ds:30661 ESTABLISHED
>
>
> # whois 76.241.133.81
> [Querying whois.arin.net]
> [whois.arin.net]
> AT&T Internet Services SBCIS-SBIS-6BLK (NET-76-192-0-0-1)
>                                  76.192.0.0 - 76.255.255.255
> se4.bcvloh PPPoX SBC-76-241-128-0-20-0707094338 (NET-76-241-128-0-1)
>                                  76.241.128.0 - 76.241.143.255
>
> # ARIN WHOIS database, last updated 2008-12-12 19:10
> # Enter ? for additional hints on searching ARIN's WHOIS database.
> [root at x86_64 mickey]# netstat -vat
> Active Internet connections (servers and established)
>
>
>
> AT&T/SBC is my Internet provider, but why would they have a
> ESTABLISHED connection to my network.
>
Are you using a pppoe client to connect to AT&T?  What does 'netstat
-anp' show?

Kevin