0121 423 5640


The 0121 dialling code covers Birmingham and the surrounding area.

Number 0121 423 5640 is potentially valid.

Oftel records show that numbers starting 0121 423 5 are allocated to BT. Note that due to number portability if an individual number has moved to a different operator this information is not publicly available.

Oftel's last recorded change for this number range was March 2017.

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Areas covered by the 0121 telephone code include:

Phone numbers beginning 0121 are geographic numbers.

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How to write an 0121 telephone number

The correct way to write telephone numbers beginning 0121 is in the format 0121 xxx xxxx

The local number (the part of the number after the dialling code) is 7 digits long

The cost of calling an 0121 number

When calling from a landline, calls to 0121 numbers can cost up to 10p per minute, dependent on the time of day, and there is usually also a call set-up fee
When calling from mobile phones, calls to these numbers cost between 10p and 40p per minute.

Most landline operators offer inclusive call packages which allow calls free at certain times of the day, or at all times, and most mobile companies include free any-time minutes in the monthly contract payment, or a bundle of minutes for a reduced cost in the form of a top-up credit.

Codes near to 0121 area code:

View a list of the allocated number ranges for 0121 numbers