Each real-time tracking URL sent in a text message has base URL. It's possible to change the base URL in each campaign.  Available base URLs include
  • long-text.com
  • our-sale.com
  • text-sauce.com
  • myfeedback.is (used in surveys/feedback campaigns)
  • show-me-more.com
  • myfeedback.is (secure version)
(More URLs coming soon).

Custom URL's can be added by support on request.

Changing URL is very easy. 
Under the design aspect of the campaign use the drop down select to change the base URL.