NPA-NXX - 303-856
This is the 303-856 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!
The 303-856 subcode mainly covers Denver in Denver county. But other numbers maybe included as well.
We have a database of information derived from the public phone records of Colorado state. Many of the numbers in this subcode are Regular Landline registered to Level 3. We hear they employ a large number of people in the Colorado office.
Recently there have been an increase in reported calls, we've had over 600158 comments across our systems for the 303-856 subcode.
Looking for a different number? Follow a link below to see our recently active.
423-425-6978 336-478-1568 717-742-1748 514-568-8860 612-767-2278815-495-7937 559-325-8241 304-962-6610 321-286-8431 561-806-4645