Prefix Information
The prefix 991 is part of area code 334 serving Montgomery, Alabama.
This exchange contains 10,000 possible phone numbers (334-991-0000 through 334-991-9999).
Phone numbers with prefix 991 in area code 334. Location: Montgomery, Alabama.
The prefix 991 is part of area code 334 serving Montgomery, Alabama.
This exchange contains 10,000 possible phone numbers (334-991-0000 through 334-991-9999).