Cornforth phone numbers start 01740
Cornforth is in County Durham, and its landline numbers begin 01740 - the code named after Sedgefield, about 4 miles away.
An 01740 number does not prove the caller is in Cornforth
88 phone companies hold 01740 ranges, a number keeps its code when it moves provider, and caller ID can be faked outright. The code tells you which exchange the range was allocated to - nothing about who dialled.
- Area code
- 01740
- Administrative area
- County Durham
- Nation
- England
- Population
- 2,501
- The code is named after
- Sedgefield
- Distance from the exchange
- about 4 miles
- Phone companies holding ranges
- 88
Numbers reported on 01740
Nobody has reported an 01740 number to this site yet. That does not mean an 01740 number is safe - it means no one has told us about one.
Other places on 01740
01740 covers more than Sedgefield. A call showing this code could have been allocated to a range at any of these exchanges.
Codes near Cornforth
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Buy us a coffeeArea code and range data from Ofcom's published allocations, downloaded 1 October 2026. Town locations, populations and administrative areas from Wikidata (CC0), joined 1 October 2026 - towns within 40 km of the exchange. Reports are from visitors to this site and are unchecked. Browse every town A-Z.