The 01438 area code is a 4 digit geographical dialling code (excluding the zero) used in telecommunications for the Stevenage area.
The local telephone numbers within the 01438 are 6 digits long.
The correct format in which to write a telephone number from the Stevenage area code is (01438) [x][x][x][x][x][x].
The Stevenage 01438 dialling code is situated in the county of Hertfordshire in the East of England Region of the UK.
You will need to use a dialling code if you are calling from a mobile phone or a landline outside of the 01438 Stevenage dialling code area. If you are calling a local number within the same area code with a landline telephone you do not need to use the 01438 dialling code.
If you are calling from outside of the UK. You will need to add the code for dialling internationally. This varies country to country, followed by the UK country code (44) followed by the area code without the initial zero (1438).
|Region||International Prefix||Country Code||Area Code|
|United States and Canada||011||44||1438|
Before the 16th April 1995 known as PhONEday which changed telephone area codes by inserting a 1 at the beginning. The area code was 0438.
the historic mnemonic code for the 01438 area was HE8. The first two characters are taken from the letters H and E in HErtfordshire. On an old rotary dial telephone this was entered by dialling the numbers 4, 3 and 8.
The shaded area on the map represent the estimated extent of the 01438 Stevenage phone area code.
The blue icons on the map represent the locations of telephone exchanges serving the 01438 area. Click on an icon for more details
|Welwyn Garden City|
|Whitwell (North Hertfordshire)|
|STEVENAGE ATE/TOWER BLOCK (SMSX)|
|KNEBWORTH ATE (SMKO)|
|WELWYN ATE (SMWEP)|
|BENINGTON UAX (SMBEN)|
|BULLS GREEN UAX (SMBG)|
|CODICOTE ATE (SMCI)|
|KIMPTON ATE (SMKP)|
|SHEPHALL UAX (SMSHP)|
|WALKERN UAX (SMWKN)|
|WHITWELL ATE (SMWTW)|