What the prefix tells you
- Number type
- Geographic
- Numbering area
- Birmingham
- Format
- 0121 xxx xxxx
A Birmingham number can be used by an organisation serving a wider area. The code cannot identify a subscriber or authenticate an incoming call.
How much does it cost to call?
01 and 02 calls may be included in a landline or mobile allowance. Check the provider’s geographic rate if the allowance is exhausted.
These are UK call-cost rules, not a quote for your individual plan. Check your provider’s tariff and any roaming terms before calling.
Reports for numbers beginning 0121
- 0121 716 2690 · 1 public report
Sources and limits
Ofcom copyright: UK numbering data, call costs guide and geographic area-code directory. Reference text checked 12 October 2026. Geographic labels were retrieved from Ofcom on 12 October 2026.
Allocation records identify number blocks, not private subscribers. Porting and caller ID spoofing mean the prefix cannot prove the current network, caller’s identity or physical location.