0121 Birmingham area code

0121 covers Birmingham: 6,010,000 numbers allocated in 601 blocks to 177 listed holders (Ofcom, 14 Oct 2026).

Check a 0121 number privately

Number ranges registered under 0121

0121 number ranges, holders and allocation dates
Number range	Listed holder	Status	Allocation date
0121 0000000 – 0121 0009999	Flextel Limited	Allocated	2005-03-22
0121 0010000 – 0121 0019999	Dynamic Mobile Billing Limited	Allocated	2006-01-13
0121 0030000 – 0121 0039999	Virgin Media Limited	Allocated	2000-06-15
0121 0050000 – 0121 0059999	Vonage Business Limited	Allocated	2012-10-09
0121 0070000 – 0121 0079999	Syntec Limited	Allocated	2013-11-20
0121 0100000 – 0121 0109999	TalkTalk Communications Limited	Allocated	2003-10-09
0121 0120000 – 0121 0129999	Vonage Business Limited	Allocated	2015-03-17
0121 1000000 – 0121 1009999	BT	Allocated	1997-11-17
0121 1010000 – 0121 1019999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1020000 – 0121 1029999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1030000 – 0121 1039999	BT	Allocated	2000-03-23
0121 1040000 – 0121 1049999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1050000 – 0121 1059999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1060000 – 0121 1069999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1110000 – 0121 1119999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1120000 – 0121 1129999	BT	Allocated	1998-07-15
0121 1210000 – 0121 1219999	Colt Technology Services	Allocated	2001-08-29
0121 1220000 – 0121 1229999	Xoom Ltd	Allocated	2019-09-16
0121 1230000 – 0121 1239999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 1310000 – 0121 1319999	Dynamic Mobile Billing Limited	Allocated	2008-01-24
0121 1320000 – 0121 1329999	Dynamic Mobile Billing Limited	Allocated	2008-01-24
0121 1600000 – 0121 1609999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 2000000 – 0121 2009999	BT	Allocated	1994-07-15
0121 2010000 – 0121 2019999	DRD Communications Limited	Allocated	2023-10-05
0121 2020000 – 0121 2029999	Vodafone Ltd (C&W)	Allocated	2018-06-29
0121 2030000 – 0121 2039999	Redcentric Solutions Limited	Allocated	2015-06-05
0121 2040000 – 0121 2049999	Vodafone Ltd (C&W)	Allocated	2018-06-29
0121 2050000 – 0121 2059999	TalkTalk Communications Limited	Allocated	2013-10-14
0121 2060000 – 0121 2069999	Vodafone Ltd (C&W)	Allocated	2018-06-29
0121 2070000 – 0121 2079999	Swiftnet Limited	Allocated	2004-07-07
0121 2080000 – 0121 2089999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 2100000 – 0121 2109999	Verizon UK Limited	Allocated	1999-07-12
0121 2120000 – 0121 2129999	BT	Allocated	1994-07-15
0121 2130000 – 0121 2139999	Virgin Media Limited	Allocated	2016-03-17
0121 2140000 – 0121 2149999	BT	Allocated	1994-07-15
0121 2150000 – 0121 2159999	Virgin Media Limited	Allocated	2002-05-29
0121 2160000 – 0121 2169999	Virgin Media Limited	Allocated	2016-03-17
0121 2170000 – 0121 2179999	Daisy Communications Ltd	Allocated	2011-12-15
0121 2180000 – 0121 2189999	Sky UK Limited	Allocated	2013-06-10
0121 2200000 – 0121 2209999	Virgin Media Limited	Allocated	1998-01-14
0121 2210000 – 0121 2219999	Vodafone Ltd (C&W)	Allocated	2015-08-10
0121 2220000 – 0121 2229999	GCI Network Solutions Limited	Allocated	2023-12-22
0121 2230000 – 0121 2239999	TalkTalk Communications Limited	Allocated	2006-06-29
0121 2240000 – 0121 2249999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 2250000 – 0121 2259999	TGL Services (UK) Ltd	Allocated	2015-02-02
0121 2260000 – 0121 2269999	Vodafone Ltd (C&W)	Allocated	2019-04-01
0121 2270000 – 0121 2279999	Gamma Telecom Holdings Limited	Allocated	2014-03-26
0121 2280000 – 0121 2289999	Invade International Ltd	Allocated	2016-01-12
0121 2290000 – 0121 2299999	GCI Network Solutions Limited	Allocated	2017-04-19
0121 2300000 – 0121 2309999	BT	Allocated	1994-07-15
0121 2310000 – 0121 2319999	Gamma Telecom Holdings Limited	Allocated	2025-08-27
0121 2320000 – 0121 2329999	BT	Allocated	1994-07-15
0121 2330000 – 0121 2339999	BT	Allocated	1994-07-15
0121 2340000 – 0121 2349999	BT	Allocated	1994-07-15
0121 2350000 – 0121 2359999	Need More Time Ltd	Allocated	2007-07-17
0121 2360000 – 0121 2369999	BT	Allocated	1994-07-15
0121 2370000 – 0121 2379999	BT	Allocated	1994-07-15
0121 2380000 – 0121 2389999	TalkTalk Communications Limited	Allocated	2013-02-12
0121 2390000 – 0121 2399999	Linear Telecoms Limited	Allocated	2010-10-04
0121 2400000 – 0121 2409999	Virgin Media Limited	Allocated	2016-03-17
0121 2410000 – 0121 2419999	Virgin Media Limited	Allocated	2016-03-17
0121 2420000 – 0121 2429999	Virgin Media Limited	Allocated	2016-03-17
0121 2430000 – 0121 2439999	Virgin Media Limited	Allocated	2016-03-17
0121 2440000 – 0121 2449999	Virgin Media Limited	Allocated	2016-03-17
0121 2450000 – 0121 2459999	Virgin Media Limited	Allocated	2016-03-17
0121 2460000 – 0121 2469999	Virgin Media Limited	Allocated	2016-03-17
0121 2470000 – 0121 2479999	Virgin Media Limited	Allocated	2016-03-17
0121 2480000 – 0121 2489999	Virgin Media Limited	Allocated	2016-03-17
0121 2490000 – 0121 2499999	Virgin Media Limited	Allocated	2016-03-17
0121 2500000 – 0121 2509999	Virgin Media Limited	Allocated	2016-03-17
0121 2510000 – 0121 2519999	Virgin Media Limited	Allocated	2016-03-17
0121 2520000 – 0121 2529999	BT	Allocated	1994-07-15
0121 2530000 – 0121 2539999	BT	Allocated	1994-08-11
0121 2540000 – 0121 2549999	BT	Allocated	1996-11-12
0121 2550000 – 0121 2559999	BT	Allocated	1997-01-27
0121 2560000 – 0121 2569999	Virgin Media Limited	Allocated	2016-03-17
0121 2570000 – 0121 2579999	Virgin Media Limited	Allocated	2016-03-17
0121 2580000 – 0121 2589999	Virgin Media Limited	Allocated	2016-03-17
0121 2590000 – 0121 2599999	GCI Network Solutions Limited	Allocated	2017-04-20
0121 2600000 – 0121 2609999	Colt Technology Services	Allocated	1998-10-01
0121 2610000 – 0121 2619999	IV Response Limited	Allocated	2005-07-04
0121 2620000 – 0121 2629999	BT	Allocated	1994-07-15
0121 2630000 – 0121 2639999	Onvoy Communications Ltd.	Allocated	2022-04-08
0121 2640000 – 0121 2649999	Digitech Solutions Global Limited	Allocated	2012-06-22
0121 2650000 – 0121 2659999	BT	Allocated	1994-07-15
0121 2660000 – 0121 2669999	Vodafone Ltd (C&W)	Allocated	2015-08-10
0121 2680000 – 0121 2689999	Digital Space Group Limited	Allocated	2016-04-12
0121 2690000 – 0121 2699999	Gamma Telecom Holdings Limited	Allocated	2021-12-21
0121 2700000 – 0121 2709999	Gamma Telecom Holdings Limited	Allocated	2002-12-04
0121 2710000 – 0121 2719999	VoiceHost Limited	Allocated	2010-06-30
0121 2720000 – 0121 2729999	Gamma Telecom Holdings Limited	Allocated	2015-09-11
0121 2730000 – 0121 2739999	Virgin Media Limited	Allocated	2006-06-09
0121 2740000 – 0121 2749999	BT	Allocated	2007-01-18
0121 2750000 – 0121 2759999	Vodafone Ltd (C&W)	Allocated	2021-11-17
0121 2760000 – 0121 2769999	Gamma Telecom Holdings Limited	Allocated	2019-10-30
0121 2770000 – 0121 2779999	Six Degrees Technology Group Limited	Allocated	2020-01-10
0121 2780000 – 0121 2789999	Vodafone Ltd (C&W)	Allocated	2013-07-31
0121 2790000 – 0121 2799999	TelNG Limited	Allocated	2007-02-26
0121 2800000 – 0121 2809999	Six Degrees Technology Group Limited	Allocated	2020-01-10
0121 2810000 – 0121 2819999	Colt Technology Services	Allocated	2001-08-29

900 more ranges — full list in CSV.

0121 allocation

Computed for 0121: 6,010,000 allocated numbers; ≈13.48× the 446,000 median (599 active codes). Register capacity: 10,000,000 numbers in 1,000 blocks.

Allocated: 6,010,000 numbers · 601 blocks
Protected: 3,870,000 numbers · 387 blocks
Free: 70,000 numbers · 7 blocks
Quarantined: 50,000 numbers · 5 blocks
Other (Reserved or Designated): 0 numbers · 0 blocks

177 listed holders for 0121

Ofcom-listed range allocation holders in the 14 Oct 2026 snapshot · alphabetical
Holder	Numbers	Blocks	Earliest allocation
(AQ) LIMITED	10,000	1	2011-10-19
24 Seven Cloud Communications Ltd	10,000	1	2019-09-30
24 Seven Communications Limited	10,000	1	2021-07-19
8x8 Communications UK Limited	10,000	1	2012-03-26
8x8 UK Limited	10,000	1	2009-12-11
Adepteo Limited	10,000	1	2017-01-16
Aloha Telecommunications Ltd	10,000	1	2011-08-16
Alphatalk Limited	20,000	2	2014-01-31
Andrews & Arnold (Numbers) Ltd	10,000	1	2009-02-25
Andrews & Arnold Ltd	10,000	1	2007-04-13
Antheus Telecom Limited	10,000	1	2018-02-06
AQL Wholesale Ltd	20,000	2	2004-11-01
Atomstream Limited	10,000	1	2010-04-23
AVC One Limited	10,000	1	2014-02-12
Barritec Limited	10,000	1	2012-10-22
Barritel Limited	20,000	2	2006-02-13
Belgacom International Carrier Services SA	10,000	1	2016-06-20
Bicom Systems EURL	10,000	1	2012-03-02
Bink Broadband Ltd	10,000	1	2016-02-08
Bink Networks Ltd	10,000	1	2023-03-27
BT	2,260,000	226	1994-01-01
Business Broadcast Communications Limited	10,000	1	2009-10-16
Buzz Networks Limited	10,000	1	2010-02-24
Callitech Limited	10,000	1	2017-09-20
Ccpro Solutions Limited	10,000	1	2025-03-04
Central Technology Limited	10,000	1	2015-10-29
CFL Communications Ltd	10,000	1	2008-08-11
Chess Limited	10,000	1	2018-04-06
Cirrus Connects Limited	10,000	1	2014-02-12
Citrus Telecommunications Ltd	10,000	1	2005-01-11
Cloudcall Limited	20,000	2	2011-06-21
Colt Technology Services	100,000	10	1998-10-01
Commi Holdings Limited	10,000	1	2016-11-21
Connect Telecom UK Limited	10,000	1	2005-04-18
Content Guru Limited	10,000	1	2012-05-28
Core Telecom Limited	10,000	1	2010-08-06
Daisy Communications Ltd	10,000	1	2011-12-15
Datazero Ltd	10,000	1	2010-11-02
Dial 9 Communications Limited	10,000	1	2019-12-09
DIDWW Ireland Limited	10,000	1	2014-04-07
Digital Mail Limited	10,000	1	2006-01-13
Digital Space Group Limited	30,000	3	2007-11-29
Digitech Solutions Global Limited	20,000	2	2010-03-17
Direct Market Solutions Ltd	10,000	1	2024-08-23
DRD Communications Limited	10,000	1	2023-10-05
Dynamic Mobile Billing Limited	50,000	5	2000-04-27
EG TECHNOLOGIES LIMITED	10,000	1	2020-01-21
Eircom (UK) Limited	10,000	1	2007-07-02
Entanet International Ltd	10,000	1	2007-12-14
ETC Telecom Limited	10,000	1	2008-02-06

127 more holders — CSV.

Weekly changes for 0121

0121 weekly changes
From	To	Changed blocks
2026-08-19	2026-08-26	0
2026-08-26	2026-09-02	0
2026-09-02	2026-09-09	0
2026-09-09	2026-09-16	0
2026-09-16	2026-09-24	0
2026-09-24	2026-09-30	0
2026-09-30	2026-10-07	0
2026-10-07	2026-10-17	0

Latest 0121 allocations · 12 months

5 blocks · 50,000 numbers.

0121 latest dated allocations · year ending 14 Oct 2026 · first 8; all in CSV
Block	Allocation date	Holder
1218 35	2026-07-24	BT
1215 82	2026-07-20	Vonage Business Limited
1215 79	2026-03-17	HAVENSTOKE COMMUNICATIONS LTD
1214 03	2026-01-26	INTELLIGENT EXCHANGES LIMITED
1218 39	2026-01-20	Voxbone SA

Called from 0121? Verify independently. Methodology.

0121 source: Ofcom s1.csv, published 14 Oct 2026. Download 0121 values (CSV). Contains Ofcom copyright material.

Source detail · 0121

0121 claim identifiers · release fc227d9e
Claim	Value	Identifier
answer	Birmingham	`area:0121:answer:fc227d9e:v1`
check	Private browser lookup	`area:0121:check:fc227d9e:v1`
holders	177	`area:0121:holders:fc227d9e:v1`
status_mix	0.601	`area:0121:status_mix:fc227d9e:v1`
history	0	`area:0121:history:fc227d9e:v1`
vintage	1994	`area:0121:vintage:fc227d9e:v1`
lengths	0	`area:0121:lengths:fc227d9e:v1`
nearby	01208, 01209, 01220, 01221	`area:0121:nearby:fc227d9e:v1`
what_to_do	/what-to-do-after-a-suspicious-call/	`area:0121:what_to_do:fc227d9e:v1`
cite	b541ed1fa93cb667e4b82b9ca1ef0e64fc28380207e87f679a2e81ea7f1560c0	`area:0121:cite:fc227d9e:v1`
allocated_numbers	6010000	`area:0121:allocated_numbers:fc227d9e:v1`
listed_holders	177	`area:0121:listed_holders:fc227d9e:v1`
allocated_share	0.601	`area:0121:allocated_share:fc227d9e:v1`
events_all	0	`area:0121:events_all:fc227d9e:v1`
records	1000	`area:0121-birmingham:records:fc227d9e:v1`
allocated_records	601	`area:0121-birmingham:allocated_records:fc227d9e:v1`
listed_holders	177	`area:0121-birmingham:listed_holders:fc227d9e:v1`
area_code	0121	`area:0121-birmingham:area_code:fc227d9e:v1`
snapshot_date	14 Oct 2026	`area:0121-birmingham:snapshot_date:fc227d9e:v1`
status_changes	0	`area:0121-birmingham:status_changes:fc227d9e:v1`
holder_changes	0	`area:0121-birmingham:holder_changes:fc227d9e:v1`
withdrawn_blocks	0	`area:0121-birmingham:withdrawn_blocks:fc227d9e:v1`

Telephone area codes, retrieved 24 Sep 2026. Ofcom s1.csv; published 14 Oct 2026; fetched 2026-10-17 20:56 UTC; sha256 b541ed1fa93cb667e4b82b9ca1ef0e64fc28380207e87f679a2e81ea7f1560c0.