Welwyn Garden City phone numbers start 01707
Welwyn Garden City is in Welwyn Hatfield, and its landline numbers begin 01707.
An 01707 number does not prove the caller is in Welwyn Garden City
110 phone companies hold 01707 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
- 01707
- Administrative area
- Welwyn Hatfield
- County
- Hertfordshire
- Nation
- England
- Population
- 51,505
- This town
- The place 01707 is named after
- Phone companies holding ranges
- 110
Numbers reported on 01707
Nobody has reported an 01707 number to this site yet. That does not mean an 01707 number is safe - it means no one has told us about one.
Other places on 01707
01707 covers more than Welwyn Garden City. A call showing this code could have been allocated to a range at any of these exchanges.
Codes near Welwyn Garden City
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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.