Toll free numbers come 4 flavors or rather four area codes, 800, 888, 877, 866.

So what’s the difference or is there a difference. Functionality wise there is no difference. All toll free numbers works the same. All are free to the caller. The toll free number system started with 800 numbers and then the other 8xx areas codes were added to expand the pool of toll free times.

If there is any difference at all, then its at a perceptional level. How a 800 number is viewed compared to the other 8xx numbers. 800 numbers are perceived in comparison to 8xx numbers similar to the way .com domains are viewed compared to .net or .org domains. But the differences in perception are very blurred now, and there is no real advantage of having one kind of toll free number against another. Go for the one you think suits your business or company.