I once emailed a Bestmark scheduler with the exact same question. The short answer is "no."
When I'm looking for phone/web shops on the site I use my own zip code and then a few zip codes I have memorized like 10023 (NYC), 90210 (LA), 70001 (Somewhere in TX), etc. etc. etc. I strongly recommend remembering a few zip codes in a few large cities as large populations are more likely to have more of the particular locations you would be calling/emailing.
Good Luck!
Edited to add: The limit on most of those shops is 20 phone calls and web inquiries per month. So, there's no need to hunt for all of them, just enough to meet your limit.
Edited 1 time(s). Last edit at 10/02/2015 07:58PM by meghan9262.