NPA-NXX - 303-256
This is the 303-256 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 303-256 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 At&t. 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 303-256 subcode.
Looking for a different number? Follow a link below to see our recently active.
281-203-7801 956-509-7341 707-988-5072 320-240-8582 402-666-1474908-758-7084 920-784-1527 770-878-2004 346-312-2424 970-535-2010