Prefix Information
The prefix 138 is part of area code 410 serving Baltimore, Maryland.
This exchange contains 10,000 possible phone numbers (410-138-0000 through 410-138-9999).
Phone numbers with prefix 138 in area code 410. Location: Baltimore, Maryland.
The prefix 138 is part of area code 410 serving Baltimore, Maryland.
This exchange contains 10,000 possible phone numbers (410-138-0000 through 410-138-9999).