There is no way to know what someone meant by putting a "3" before an area code.
Insufficient information to answer your question.
add on code
secondary
Assuming you mean in the UK - it's the area code for Leeds.
In North America, telephone area code 610 is for suburbs of Philadelphia, Pennsylvania.
Stay out of area.
Did you mean area code? They are 228, 601, and 662. If you are dialing from outside North America, you have to dial the country code for US (which is "1") and then the area code.
its a area code in Baltimore
In what. Police, Fireman. What do you want in this answer in what area.
probably an area code.
Depending on what you mean by "the area code of a call," it's either the area code of the phone you're calling from or the area code of the phone you're ringing. The fact that the call is "collect" (reverse charges) is irrelevant.
Did you mean area code? They are 228, 601, and 662. If you are dialing from outside North America, you have to dial the country code for US (which is "1") and then the area code.
If you mean Farwaniya, Kuwait, the country code for Kuwait is +965.