NPA-NXX - 904-666

This is the 904-666 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

1. Area Codes
2. 904
3. 904-666

The 904-666 subcode mainly covers Jacksonville in Duval county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Florida state. Many of the numbers in this subcode are Regular Landline registered to Terra Nova Telecom. We hear they employ a large number of people in the Florida office.
Recently there have been an increase in reported calls, we've had over 864263 comments across our systems for the 904-666 subcode.