I'll second what MurrayB wrote.
I have ported three numbers to
Voip.ms and also purchased three numbers from them. Not a single problem. I like the fact that you can see the number before buying it. At callcentric and some of the other places, you just get assigned a number in your requested area. Anveo and Localphone I believe are that way too.
I don't think you can go wrong with either
Voip.ms or Callcentric. Both have their pros and cons but both are top notch providers.
In my case,
Voip.ms is somewhat cheaper since I have 6 DID's.
They charge $0.99/mo. for a DID and Callcentric charges $1.95/mo. So, if you have multiple DID's,
Voip.ms would be somewhat cheaper in that regard.
I believe both are currently offering free porting. Usual porting price at Callcentric is $25.00 and at
Voip.ms it is usually $10.00. These prices are for U.S. ports.
I like Callcentric's web site the most. It is really simple to understand and everything important seems to be on your dashboard. Real clean.
I have accounts at both places and can't complain about either one.
Good luck with your decision.....