UK area code
0121 — Birmingham
The 0121 dialling code covers Birmingham in West Midlands. Approximate population of the area: 1,140,000. Below are the currently-allocated Ofcom number ranges and the Range Holders they are assigned to.
About the 0121 dialling code
0121 is the UK area code for Birmingham and the surrounding West Midlands area, listed in Ofcom’s National Telephone Numbering Plan. When a UK landline calls you and the number begins +44 121 the originating exchange is most likely physically located in or near Birmingham. Numbers in this code are allocated to UK communications providers in 1,000- or 10,000-number blocks; the table below shows which Range Holder Ofcom assigned each block to.
This is the same data Ofcom publishes every Wednesday in the public UK Numbering Data feed. We re-ingest the snapshot weekly, so the allocations you see here are at most seven days old. Because UK numbers are portable, the current carrier of any specific number on 0121 can differ from the Range Holder shown — see Range Holder vs current provider for the full explanation.
To identify a specific 0121 number, paste it into the lookup form above. You will see the Range Holder, the allocation status, the area-code metadata for Birmingham, and a live AI internet check summarising any public web reports about that exact number — useful when an unfamiliar 0121 caller turns out to be a legitimate local business, a national contact-centre, or a scam.
Range holders on 0121
- British Telecommunications PLC1 range
- Virgin Media Ltd1 range
- Gamma Telecom Holdings Ltd1 range
All allocated ranges on 0121
Showing up to 200 ranges, ordered by prefix.
| Prefix | Status | Range holder |
|---|---|---|
| +44 121200 | Allocated | British Telecommunications PLC |
| +44 121201 | Allocated | Virgin Media Ltd |
| +44 121202 | Allocated | Gamma Telecom Holdings Ltd |
Related lookups
FAQs about 0121
What does the 0121 area code cover?
0121 is the UK dialling code for Birmingham and the wider West Midlands area. The area has a population of approximately 1,140,000. When you receive a call starting with 0121 from a UK landline, the originating exchange is likely in or near Birmingham.
Is a 0121 number safe?
Most calls from 0121 are legitimate landlines. Scammers can however spoof any UK area code, so a 0121 prefix alone doesn't guarantee safety. Use the lookup above to see the Range Holder, then read the AI internet check for behavioural reports.
How many providers operate 0121 number ranges?
Across the 3 ranges currently visible, 3 different Range Holders are listed. The top allocations are typically held by Openreach (BT), Virgin Media O2 and Sky.