It's actually hard to tell from their website exactly what they do but they talk about delivering superior customer experiences which sounds like the Call Center category.
Best 1% List
We've helped tens of thousands of customers get great numbers over the past 25+ years
“I was so pleased when a fellow employee recommended TollFreeNumbers.com to me when we needed to add a toll free number to help market our company. I was able to find a great number very easily and quickly. Everything went so smoothly. I was so impressed that our new toll free number was working the same day. The team was professional and the customer service excellent. I would highly recommend TollFreeNumbers.com.”
“I am glad your site is popular, because it provides a great public service to persons who could otherwise find themselves hostage to an 800 number owned by their service provider. Even one of the providers you recommend has wiggle words in response to an FAQ on number....Thanks again for the help your site provides.”
Cedar falls, IA
“You guys have been great from the start and were as good as advertised. I knew nothing about the 800 market when I began and was very skeptical, but you have been nothing but upfront and honest and I appreciate it greatly. You have helped us secure an integral piece of our branding strategy and we can only hope our telephones will help those with hearing loss as much as you have helped us. Thanks again.”