01858 area code - Market Harborough
01858 is the UK landline area code for Market Harborough. From abroad, dial +44 1858 followed by the local number.
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About 01858 calls
Calls to 01858 numbers cost the same as other UK landline calls and are usually included in your minutes. A 01858 number on your screen suggests a line registered in Market Harborough, but internet phone services let callers use local-looking numbers from anywhere. Scammers sometimes fake local numbers so you are more likely to answer.