NPA-NXX - 860-603

This is the 860-603 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. 860
3. 860-603

The 860-603 subcode mainly covers Colchester in New London county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Connecticut state. Many of the numbers in this subcode are Regular Landline registered to Comcast. We hear they employ a large number of people in the Connecticut office.
Recently there have been an increase in reported calls, we've had over 274055 comments across our systems for the 860-603 subcode.