Prefix Information

The prefix 991 is part of area code 878 serving Pittsburgh, Pennsylvania.

This exchange contains 10,000 possible phone numbers (878-991-0000 through 878-991-9999).

Browse Numbers in This Prefix

878-991-0000-0999 878-991-1000-1999 878-991-2000-2999 878-991-3000-3999 878-991-4000-4999 878-991-5000-5999 878-991-6000-6999 878-991-7000-7999 878-991-8000-8999 878-991-9000-9999

Sample Numbers

(878) 991-0000 (878) 991-1234 (878) 991-2000 (878) 991-3333 (878) 991-4444 (878) 991-5555 (878) 991-6000 (878) 991-7777 (878) 991-8888 (878) 991-9999