UK area code
0121 area code — Birmingham
0121 is Ofcom’s Birmingham numbering area, in West Midlands, West Midlands England. 177 phone companies hold its 601 allocated number blocks. Visitors have checked 221 different 0121 numbers here. Its numbers are written like 0121 234 5678. The nearest other codes are 01922 Walsall (13 km) and 01675 Coleshill (14 km).
0121 at a glance
- Ofcom area name
- Birmingham
- County
- West Midlands
- Council area
- Birmingham
- Region
- West Midlands England
- Number format
- 0121 234 5678 (3+7)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 021)
- Allocated blocks
- 601 of 1,000 (60%) across 177 providers
- Newest block
- 24 July 2026 (5 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
What people check and report about 0121 numbers
From searches in our lookup form since 13 May 2026 and the verdicts and reports visitors left. A check means someone typed the number in, usually after a missed call.
- Checks
- 241
- Different numbers checked
- 221
- Different people checking
- 229
That makes 0121 numbers the 3rd most-checked of the 443 UK area codes people have looked up here.
By day of the week
Busiest: Thursday (22% of checks)
By hour (UK time)
Busiest: 2pm–3pm; the three busiest hours hold 34% of checks
Caller verdicts on 0121 numbers: 5
Scam 60% (3) · Nuisance 40% (2) · Safe 0% (0)
Most-reported and most-checked 0121 numbers
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 0121 790 0671 | 1 nuisance | — | 3 |
| 0121 231 2146 | 1 scam | — | 1 |
| 0121 529 2358 | 1 scam | — | 1 |
| 0121 529 3189 | 1 nuisance | — | 1 |
| 0121 839 1722 | 1 scam | — | 1 |
If a 0121 number called you
Most verdicts on these numbers say scam, so treat unexpected calls as possible scams.
- 1
Call back on a number you trust
If a caller says they're your bank, HMRC, a courier or a council, hang up and ring the organisation on the number from its website or your statement, never the number that called you. Caller ID can be faked.
- 2
Forward it to 7726
On a mobile, copy the caller's number from your recent calls and text it to 7726 (it spells SPAM). Scam texts can be forwarded to 7726 as they are. It's free, and your network uses the reports to investigate and block numbers.
- 3
If you lost money or shared details
Call your bank on the number on your card (or 159 to reach most UK banks safely), then report it to Report Fraud online or on 0300 123 2040. Report Fraud replaced Action Fraud on 4 December 2025 for England, Wales and Northern Ireland; in Scotland call Police Scotland on 101.
0121 history and number format
Number format: Numbers on 0121 use Ofcom's 3+7 format: the 4-digit code (including the leading 0) followed by a 7-digit local number — written like 0121 234 5678.
Before 1995: 0121 took its current form at PhONEday on 16 April 1995, when a "1" was inserted into every UK geographic code — before that the area dialled 021.
Local dialling: Traditionally not from another 0121 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 0121 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 0121 was allocated on 1 January 1994, and the most recent on 24 July 2026. 5 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 0121 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 0121 numbers
Every Ofcom range holder with blocks on 0121, by allocated blocks. The holder is the company Ofcom allocated the block to; a number can since have been ported to another provider (see range holder vs current provider).
| Range holder | Allocated | All blocks | First block | Latest block |
|---|---|---|---|---|
| BT | 226 | 226 | 1 January 1994 | 24 July 2026 |
| Virgin Media Limited | 56 | 56 | 14 January 1998 | 17 March 2016 |
| Vodafone Ltd (C&W) | 47 | 47 | 18 June 2013 | 17 November 2021 |
| Gamma Telecom Holdings Limited | 22 | 22 | 4 December 2002 | 17 September 2025 |
| GCI Network Solutions Limited | 12 | 12 | 30 March 2017 | 22 December 2023 |
| Sky UK Limited | 11 | 11 | 10 June 2013 | 31 October 2016 |
| TalkTalk Communications Limited | 11 | 11 | 9 October 2003 | 24 November 2017 |
| Colt Technology Services | 10 | 10 | 1 October 1998 | 27 September 2024 |
| Dynamic Mobile Billing Limited | 5 | 5 | 27 April 2000 | 24 January 2008 |
| Magrathea Telecommunications Limited | 4 | 4 | 1 March 2004 | 1 June 2023 |
| Verizon UK Limited | 4 | 4 | 12 July 1999 | 19 March 2015 |
| Digital Space Group Limited | 3 | 3 | 29 November 2007 | 12 April 2016 |
| Syntec Limited | 3 | 3 | 18 October 2004 | 11 February 2014 |
| Vonage Business Limited | 3 | 3 | 9 October 2012 | 20 July 2026 |
| Voxbone SA | 3 | 3 | 25 October 2007 | 20 January 2026 |
| AQL Wholesale Ltd | 2 | 2 | 1 November 2004 | 29 September 2016 |
| Alphatalk Limited | 2 | 2 | 31 January 2014 | 31 January 2014 |
| Barritel Limited | 2 | 2 | 13 February 2006 | 28 November 2022 |
| Cloudcall Limited | 2 | 2 | 21 June 2011 | 20 November 2015 |
| Digitech Solutions Global Limited | 2 | 2 | 17 March 2010 | 22 June 2012 |
| Flextel Limited | 2 | 2 | 19 October 2004 | 22 March 2005 |
| Fuse 2 Communications Ltd | 2 | 2 | 22 February 2016 | 22 January 2024 |
| IOVOX Limited | 2 | 2 | 5 March 2012 | 12 December 2016 |
| Lumen Technologies UK Limited | 2 | 2 | 9 September 1999 | 2 June 2011 |
| Media Hawk Ltd | 2 | 2 | 26 September 2011 | 1 July 2020 |
| Nexbridge Communications Limited | 2 | 2 | 9 January 2012 | 7 July 2021 |
| Numbers Telecom Limited | 2 | 2 | 12 July 2012 | 1 December 2015 |
| Relax Telecom Limited | 2 | 2 | 28 September 2010 | 15 August 2014 |
| Simwood eSMS Limited | 2 | 2 | 18 July 2006 | 18 December 2017 |
| Six Degrees Technology Group Limited | 2 | 2 | 10 January 2020 | 10 January 2020 |
Showing the 30 largest of 177 holders.
Openreach exchanges at Birmingham
Exchanges Openreach lists at this location in its copper stop-sell programme, with the date new copper orders stop.
- Acocks Green CMACOStop sell 09-Nov-23 · Tranche 10
- Beacon CMBEACStop sell 29-Jun-21 · Tranche 1a
- Bearwood CMBEARStop sell 13-Oct-21 · Tranche 1b
- Birchfield CMBIRStop sell 13-Oct-21 · Tranche 1b
- Calthorpe (BM/CAL) CMCALStop sell 14-Feb-26 · Tranche 19
- Harborne CMHARBOStop sell 29-Apr-22 · Tranche 4
- Highbury CMHIGHStop sell 29-Jun-21 · Tranche 1a
- Hillside CMHILLStop sell 29-Apr-22 · Tranche 4
- Kings Norton CMKINGStop sell 06-Nov-25 · Tranche 18
- Northern CMNORStop sell 16-Feb-24 · Tranche 11
- Sheldon CMSHELStop sell 29-Jun-21 · Tranche 1a
- Springfield CMSPRStop sell 13-Oct-21 · Tranche 1b
- Stechford CMSTEStop sell 29-Jun-21 · Tranche 1a
- Victoria CMVICStop sell 04-Jun-24 · Tranche 12
- Woodgate CMWDGTStop sell 29-Apr-22 · Tranche 4
All number blocks on 0121first 200 of 1,000, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 121000 | Allocated | Flextel Limited |
| +44 121001 | Allocated | Dynamic Mobile Billing Limited |
| +44 121002 | Quarantined | — |
| +44 121003 | Allocated | Virgin Media Limited |
| +44 121004 | Protected | — |
| +44 121005 | Allocated | Vonage Business Limited |
| +44 121006 | Protected | — |
| +44 121007 | Allocated | Syntec Limited |
| +44 121008 | Protected | — |
| +44 121009 | Protected | — |
| +44 121010 | Allocated | TalkTalk Communications Limited |
| +44 121011 | Protected | — |
| +44 121012 | Allocated | Vonage Business Limited |
| +44 121013 | Protected | — |
| +44 121014 | Protected | — |
| +44 121015 | Protected | — |
| +44 121016 | Protected | — |
| +44 121017 | Protected | — |
| +44 121018 | Protected | — |
| +44 121019 | Protected | — |
| +44 121020 | Protected | — |
| +44 121021 | Protected | — |
| +44 121022 | Protected | — |
| +44 121023 | Protected | — |
| +44 121024 | Protected | — |
| +44 121025 | Protected | — |
| +44 121026 | Protected | — |
| +44 121027 | Protected | — |
| +44 121028 | Protected | — |
| +44 121029 | Protected | — |
| +44 121030 | Protected | — |
| +44 121031 | Protected | — |
| +44 121032 | Protected | — |
| +44 121033 | Protected | — |
| +44 121034 | Protected | — |
| +44 121035 | Protected | — |
| +44 121036 | Protected | — |
| +44 121037 | Protected | — |
| +44 121038 | Protected | — |
| +44 121039 | Protected | — |
| +44 121040 | Protected | — |
| +44 121041 | Protected | — |
| +44 121042 | Protected | — |
| +44 121043 | Protected | — |
| +44 121044 | Protected | — |
| +44 121045 | Protected | — |
| +44 121046 | Protected | — |
| +44 121047 | Protected | — |
| +44 121048 | Protected | — |
| +44 121049 | Protected | — |
| +44 121050 | Protected | — |
| +44 121051 | Protected | — |
| +44 121052 | Protected | — |
| +44 121053 | Protected | — |
| +44 121054 | Protected | — |
| +44 121055 | Protected | — |
| +44 121056 | Protected | — |
| +44 121057 | Protected | — |
| +44 121058 | Protected | — |
| +44 121059 | Protected | — |
| +44 121060 | Protected | — |
| +44 121061 | Protected | — |
| +44 121062 | Protected | — |
| +44 121063 | Protected | — |
| +44 121064 | Protected | — |
| +44 121065 | Protected | — |
| +44 121066 | Protected | — |
| +44 121067 | Protected | — |
| +44 121068 | Protected | — |
| +44 121069 | Protected | — |
| +44 121070 | Protected | — |
| +44 121071 | Protected | — |
| +44 121072 | Protected | — |
| +44 121073 | Protected | — |
| +44 121074 | Protected | — |
| +44 121075 | Protected | — |
| +44 121076 | Protected | — |
| +44 121077 | Protected | — |
| +44 121078 | Protected | — |
| +44 121079 | Protected | — |
| +44 121080 | Protected | — |
| +44 121081 | Protected | — |
| +44 121082 | Protected | — |
| +44 121083 | Protected | — |
| +44 121084 | Protected | — |
| +44 121085 | Protected | — |
| +44 121086 | Protected | — |
| +44 121087 | Protected | — |
| +44 121088 | Protected | — |
| +44 121089 | Protected | — |
| +44 121090 | Protected | — |
| +44 121091 | Protected | — |
| +44 121092 | Protected | — |
| +44 121093 | Protected | — |
| +44 121094 | Protected | — |
| +44 121095 | Protected | — |
| +44 121096 | Protected | — |
| +44 121097 | Protected | — |
| +44 121098 | Protected | — |
| +44 121099 | Protected | — |
| +44 121100 | Allocated | BT |
| +44 121101 | Allocated | Vodafone Ltd (C&W) |
| +44 121102 | Allocated | Vodafone Ltd (C&W) |
| +44 121103 | Allocated | BT |
| +44 121104 | Allocated | Vodafone Ltd (C&W) |
| +44 121105 | Allocated | Vodafone Ltd (C&W) |
| +44 121106 | Allocated | Vodafone Ltd (C&W) |
| +44 121107 | Protected | — |
| +44 121108 | Protected | — |
| +44 121109 | Protected | — |
| +44 121110 | Protected | — |
| +44 121111 | Allocated | Vodafone Ltd (C&W) |
| +44 121112 | Allocated | BT |
| +44 121113 | Protected | — |
| +44 121114 | Protected | — |
| +44 121115 | Protected | — |
| +44 121116 | Protected | — |
| +44 121117 | Protected | — |
| +44 121118 | Protected | — |
| +44 121119 | Protected | — |
| +44 121120 | Protected | — |
| +44 121121 | Allocated | Colt Technology Services |
| +44 121122 | Allocated | Xoom Ltd |
| +44 121123 | Allocated | Vodafone Ltd (C&W) |
| +44 121124 | Protected | — |
| +44 121125 | Protected | — |
| +44 121126 | Protected | — |
| +44 121127 | Protected | — |
| +44 121128 | Protected | — |
| +44 121129 | Protected | — |
| +44 121130 | Protected | — |
| +44 121131 | Allocated | Dynamic Mobile Billing Limited |
| +44 121132 | Allocated | Dynamic Mobile Billing Limited |
| +44 121133 | Protected | — |
| +44 121134 | Protected | — |
| +44 121135 | Protected | — |
| +44 121136 | Protected | — |
| +44 121137 | Protected | — |
| +44 121138 | Protected | — |
| +44 121139 | Protected | — |
| +44 121140 | Protected | — |
| +44 121141 | Protected | — |
| +44 121142 | Protected | — |
| +44 121143 | Protected | — |
| +44 121144 | Protected | — |
| +44 121145 | Protected | — |
| +44 121146 | Protected | — |
| +44 121147 | Protected | — |
| +44 121148 | Protected | — |
| +44 121149 | Protected | — |
| +44 121150 | Protected | — |
| +44 121151 | Protected | — |
| +44 121152 | Protected | — |
| +44 121153 | Protected | — |
| +44 121154 | Protected | — |
| +44 121155 | Protected | — |
| +44 121156 | Protected | — |
| +44 121157 | Protected | — |
| +44 121158 | Protected | — |
| +44 121159 | Protected | — |
| +44 121160 | Allocated | Vodafone Ltd (C&W) |
| +44 121161 | Protected | — |
| +44 121162 | Protected | — |
| +44 121163 | Protected | — |
| +44 121164 | Protected | — |
| +44 121165 | Protected | — |
| +44 121166 | Protected | — |
| +44 121167 | Protected | — |
| +44 121168 | Protected | — |
| +44 121169 | Protected | — |
| +44 121170 | Protected | — |
| +44 121171 | Protected | — |
| +44 121172 | Protected | — |
| +44 121173 | Protected | — |
| +44 121174 | Protected | — |
| +44 121175 | Protected | — |
| +44 121176 | Protected | — |
| +44 121177 | Protected | — |
| +44 121178 | Protected | — |
| +44 121179 | Protected | — |
| +44 121180 | Protected | — |
| +44 121181 | Protected | — |
| +44 121182 | Protected | — |
| +44 121183 | Protected | — |
| +44 121184 | Protected | — |
| +44 121185 | Protected | — |
| +44 121186 | Protected | — |
| +44 121187 | Protected | — |
| +44 121188 | Protected | — |
| +44 121189 | Protected | — |
| +44 121190 | Protected | — |
| +44 121191 | Protected | — |
| +44 121192 | Protected | — |
| +44 121193 | Protected | — |
| +44 121194 | Protected | — |
| +44 121195 | Protected | — |
| +44 121196 | Protected | — |
| +44 121197 | Protected | — |
| +44 121198 | Protected | — |
| +44 121199 | Protected | — |
Related lookups
- 01922 Walsall13 km away
- 01675 Coleshill14 km away
- 01384 Dudley16 km away
- 01676 Meriden18 km away
- BT226 allocated blocks on 0121
- Virgin Media Limited56 allocated blocks on 0121
- Vodafone Ltd (C&W)47 allocated blocks on 0121
- All UK towns A–ZDialling codes by town
- More West Midlands codesSame region
- All UK area codesBrowse every 01/02 dialling code
- Lookup any UK numberFree reverse phone lookup
- UK area codes explainedCornerstone guide
- 020 London numbers explainedCornerstone guide
- 0330 numbers explainedCornerstone guide
- How Ofcom allocates UK phone numbersCornerstone guide
FAQs about 0121
Where is area code 0121?
0121 is Ofcom's Birmingham numbering area, in West Midlands, West Midlands England. Its exchange town is in Birmingham. From abroad, drop the 0 and dial +44 121.
Do I need to dial 0121 for a local call?
Traditionally not from another 0121 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 0121 first always works, and mobiles always need it.
How are 0121 numbers written?
Numbers on 0121 use Ofcom's 3+7 format: the 4-digit code (including the leading 0) followed by a 7-digit local number — written like 0121 234 5678. From abroad the leading zero is dropped: +44 121 then the local number.
What was the 0121 area code before?
0121 took its current form at PhONEday on 16 April 1995, when a "1" was inserted into every UK geographic code — before that the area dialled 021. Old signage or stationery showing 021 refers to the same Birmingham numbers.
Which phone companies hold 0121 numbers?
Ofcom lists 177 providers with allocated blocks on 0121. The largest are BT with 226 of the 601 allocated blocks, Virgin Media Limited with 56 of the 601 allocated blocks and Vodafone with 47 of the 601 allocated blocks. Numbers can be ported, so a number's current provider may differ from the block's holder.
Are 0121 numbers reported as scams?
Visitors have checked 221 different 0121 numbers here 241 times since May 2026. 5 caller verdicts have been left on 0121 numbers: 3 scam, 2 nuisance and 0 safe, so most say scam.
Which area codes are next to 0121?
By distance between exchange towns, the nearest other codes are 01922 Walsall (13 km), 01675 Coleshill (14 km), 01384 Dudley (16 km) and 01676 Meriden (18 km).
How do I report a scam call from a 0121 number?
On a mobile, text the caller's number to 7726 (free). If you lost money or shared details, call your bank and report it to Report Fraud (0300 123 2040), which replaced Action Fraud in December 2025. Unwanted sales calls go to the ICO after registering with the Telephone Preference Service.