The 01638 phone code covers the Newmarket area.
Phone numbers using this code are in the form of (01638) ### ###.
International callers should call +44 1638 ######.
The centre of the phone code area has a latitude of 52.244880 and longitude of 0.407962.
The nearest other phone codes are: Newmarket (01638) Haverhill (01440) Ely (01353) Cambridge (01223) Bury-St-Edmunds (01284)