Netherlands · NLD
Haarlem dialing code
Haarlem · Haarlem
Dialing code
+31 23
From abroad
+31 23 123-4567
Dial +31, then the city code 23, then the phone number without the leading zero.
Within the country
023 123-4567
Dial 023 followed by the phone number.
How to call Haarlem?
To call Haarlem in Netherlands from abroad, dial the international code +31, followed by the city code 23, then the local number without the leading zero.