Just an FYI:
using GRC.com's IDServe utility I found they are 
running Netscape-Enterprise/3.6 SP2.  Further checking 
showed that:
www.att.net is SP2
help.att.net is SP3

Netscape has end-of-lifed v3.6 servers, "Last 
updated:  April 25, 2000"
<http://help.netscape.com/products/eol/server/es36>-
eol.html

IDServe gave me this:
Initiating server query ...
Looking up IP address for domain: home.att.net
The IP address for the domain is: 204.127.135.37
Connecting to the server on standard HTTP port: 80
[Connected]  Requesting the server's default page.
The server returned the following response headers:
HTTP/1.1 200 OK
Server: Netscape-Enterprise/3.6 SP2
Date: Sun, 12 May 2002 07:20:42 GMT
Content-type: text/html
Etag: "7f603-308d-3c8f98ac"
Last-modified: Wed, 13 Mar 2002 18:21:32 GMT
Content-length: 12429
Accept-ranges: bytes
Connection: close
Query complete.


Clearly, ATT has some older servers that badly need 
updating.