The 01603 area code is a 4 digit geographical dialling code (excluding the zero) used in telecommunications for the Norwich area.
The local telephone numbers within the 01603 are 6 digits long.
The correct format in which to write a telephone number from the Norwich area code is (01603) [x][x][x][x][x][x].
The Norwich 01603 dialling code is situated in the county of Norfolk 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 01603 Norwich 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 01603 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 (1603).
|Region||International Prefix||Country Code||Area Code|
|United States and Canada||011||44||1603|
Before the 16th April 1995 known as PhONEday which changed telephone area codes by inserting a 1 at the beginning. The area code was 0603.
the historic mnemonic code for the 01603 area was NO3. The first two characters are taken from the letters N and O in NOrwich . On an old rotary dial telephone this was entered by dialling the numbers 6, 0 and 3.
The shaded area on the map represent the estimated extent of the 01603 Norwich phone area code.
The blue icons on the map represent the locations of telephone exchanges serving the 01603 area. Click on an icon for more details
|Barford (South Norfolk)|
|Easton (South Norfolk)|
|Little Plumstead (South)|
|NORWICH ATE HOWARD HOUSE (EANCC)|
|NORWICH WEST ATE (EANCW)|
|NORWICH THORPE ATE (EATHP)|
|COSTESSEY ATE (EACOS)|
|DRAYTON ATE (EADRA)|
|BARNHAM BROOM SAX (EABNM)|
|BRUNDALL ATE (EABRU)|
|BUXTON UAX/BUILDING 1 (EABUX)|
|COLTISHALL ATE (EACTS)|
|HETHERSETT ATE (EAHET)|
|HEVINGHAM NEW SAX (EAHEV)|
|HONNINGHAM ATE (EAHON)|
|NORWICH ATE/RUSSELL HOUSE (EANCE)|
|REEPHAM ATE (EAREE)|
|SALHOUSE ATE (EASAL)|
|NORWICH ST. FAITH'S UAX (EASFT)|
|SOUTH WALSHAM SAX (EASWL)|
|WROXHAM ATE (EAWRO)|