Porting a 212 area code phone number that is purchased from 212areacode.com to Google voice is one of the wisest things you can do, here are a few benefits you will receive when using Google Voice combined with a 212 number:

1. Google Voice is FREE ! (porting fee Is a onetime $20)
2. you will receive all the benefits of a 212 area code phone number without switching your current number
3. you can forward the calls to up to 5 different phone numbers
4. A 212 area code phone number gives you the presence you always wanted in Manhattan.

These are only a small part of what you can get with a 212 phone number on Google Voice, for more details on how to port or use a Google voice head here: How to Use a 212 Number While Maintaining Your Existing Phone Number