If your a realtor, I know you hear this question almost every time you close a property.  Who are the utility companies etc?  Well I found this website.  It doesn't necessarily work for smaller communities, ie. Boerne.  It doesn't even mention Guadalupe Valley Telephone or Cable company as an alternative, but I think if you live in a larger area, this could really work for your clients.  www.whitefence.com.  You can schedule all your utiltities or at least get the phone numbers.  It also does a comparison in those places where there might actually be competition for phone and cable service.  You could even use this site if you are not moving and just want to find out what those other companies have to offer.  You might find a great deal, who knows!  There is even a place to do a change of address form, and other needs such as maid service (I wish), lawn service (how come we have this and we don't have maid service, Glen!) and other helpful information whether you are moving or not.  Course you can always just call your realtor and I'm sure they will have the answer. :)