rangecheck

01213 area code: Birmingham numbers starting 0121 3

01213 is not a separate area code. It is Birmingham (0121) followed by local numbers starting 3.

870,000 numbers are allocated in 87 blocks to 36 listed holders (Ofcom, 14 Oct 2026).

Check a 01213 number privately

Number ranges registered under 0121 3

0121 3 blocks: holder, status and allocation date
Number rangeListed holderStatusAllocation date
0121 3000000 – 0121 3009999 Vodafone Ltd (C&W) Allocated 2018-06-29
0121 3010000 – 0121 3019999 Virgin Media Limited Allocated 2016-03-17
0121 3020000 – 0121 3029999 Global Reach Networks Limited Allocated 2016-08-24
0121 3030000 – 0121 3039999 Virgin Media Limited Allocated 2016-03-17
0121 3040000 – 0121 3049999 Voicetec Systems Ltd Allocated 2006-06-22
0121 3060000 – 0121 3069999 BT Allocated 1994-07-15
0121 3070000 – 0121 3079999 Resilient Limited Allocated 2006-11-29
0121 3080000 – 0121 3089999 BT Allocated 1994-07-15
0121 3090000 – 0121 3099999 VoIP-Un Limited Allocated 2007-10-25
0121 3110000 – 0121 3119999 BT Allocated 1994-07-15
0121 3120000 – 0121 3129999 Gamma Telecom Holdings Limited Allocated 2017-11-20
0121 3130000 – 0121 3139999 BT Allocated 1994-01-01
0121 3140000 – 0121 3149999 Magrathea Telecommunications Limited Allocated 2004-03-01
0121 3150000 – 0121 3159999 Vodafone Ltd (C&W) Allocated 2013-07-31
0121 3180000 – 0121 3189999 WAVECREST NETWORKS LIMITED Allocated 2019-12-16
0121 3190000 – 0121 3199999 Square Systems Limited Allocated 2007-10-26
0121 3200000 – 0121 3209999 Vodafone Ltd (C&W) Allocated 2013-06-18
0121 3210000 – 0121 3219999 BT Allocated 1994-07-15
0121 3220000 – 0121 3229999 BT Allocated 1994-07-15
0121 3230000 – 0121 3239999 BT Allocated 1994-07-15
0121 3250000 – 0121 3259999 BT Allocated 1994-07-15
0121 3260000 – 0121 3269999 BT Allocated 1994-07-15
0121 3270000 – 0121 3279999 BT Allocated 1994-07-15
0121 3280000 – 0121 3289999 BT Allocated 1994-07-15
0121 3290000 – 0121 3299999 BT Allocated 1994-07-15
0121 3300000 – 0121 3309999 Flextel Limited Allocated 2004-10-19
0121 3310000 – 0121 3319999 BT Allocated 1994-07-15
0121 3320000 – 0121 3329999 BT Allocated 1994-07-15
0121 3330000 – 0121 3339999 BT Allocated 1994-07-15
0121 3340000 – 0121 3349999 BT Allocated 1994-07-15
0121 3350000 – 0121 3359999 Vodafone Ltd (C&W) Allocated 2013-07-31
0121 3360000 – 0121 3369999 Vodafone Ltd (C&W) Allocated 2021-11-17
0121 3370000 – 0121 3379999 GCI Network Solutions Limited Allocated 2017-04-20
0121 3380000 – 0121 3389999 Reality Network Services Limited Allocated 2005-07-18
0121 3390000 – 0121 3399999 Liquid 11 Limited Allocated 2010-04-26
0121 3400000 – 0121 3409999 Alphatalk Limited Allocated 2014-01-31
0121 3420000 – 0121 3429999 BT Allocated 2007-01-03
0121 3440000 – 0121 3449999 BT Allocated 1994-07-15
0121 3450000 – 0121 3459999 Lumen Technologies UK Limited Allocated 1999-09-09
0121 3460000 – 0121 3469999 BT Allocated 2007-10-12
0121 3470000 – 0121 3479999 BT Allocated 1999-05-07
0121 3480000 – 0121 3489999 Spitfire Network Services Limited Allocated 2006-06-27
0121 3490000 – 0121 3499999 Digital Space Group Limited Allocated 2007-11-29
0121 3500000 – 0121 3509999 BT Allocated 1994-07-15
0121 3510000 – 0121 3519999 BT Allocated 1994-07-15
0121 3520000 – 0121 3529999 BT Allocated 1994-07-15
0121 3530000 – 0121 3539999 BT Allocated 1994-07-15
0121 3540000 – 0121 3549999 BT Allocated 1994-07-15
0121 3550000 – 0121 3559999 BT Allocated 1994-07-15
0121 3560000 – 0121 3569999 BT Allocated 1994-07-15
0121 3570000 – 0121 3579999 BT Allocated 1994-07-15
0121 3580000 – 0121 3589999 BT Allocated 1994-07-15
0121 3590000 – 0121 3599999 BT Allocated 1994-07-15
0121 3600000 – 0121 3609999 BT Allocated 1994-07-15
0121 3610000 – 0121 3619999 Telecom2 Limited Allocated 2009-09-11
0121 3620000 – 0121 3629999 BT Allocated 1994-07-15
0121 3630000 – 0121 3639999 Citrus Telecommunications Ltd Allocated 2005-01-11
0121 3640000 – 0121 3649999 Vodafone Ltd (C&W) Allocated 2013-07-31
0121 3650000 – 0121 3659999 Pulsant (Scotland) Limited Allocated 2009-02-17
0121 3660000 – 0121 3669999 BT Allocated 1994-07-15
0121 3670000 – 0121 3679999 GCI Network Solutions Limited Allocated 2017-04-19
0121 3680000 – 0121 3689999 Voxbone SA Allocated 2007-10-25
0121 3690000 – 0121 3699999 TTNC Limited Allocated 2013-11-14
0121 3710000 – 0121 3719999 Vodafone Ltd (C&W) Allocated 2013-07-31
0121 3730000 – 0121 3739999 BT Allocated 1994-07-15
0121 3740000 – 0121 3749999 Telappliant Limited Allocated 2009-02-03
0121 3750000 – 0121 3759999 Tuxtel Ltd Allocated 2009-11-05
0121 3760000 – 0121 3769999 TeleWare Group Limited Allocated 2013-02-21
0121 3770000 – 0121 3779999 BT Allocated 1994-07-15
0121 3780000 – 0121 3789999 BT Allocated 1994-07-15
0121 3790000 – 0121 3799999 The Excell Group Limited Allocated 2008-11-10
0121 3800000 – 0121 3809999 BT Allocated 1994-07-15
0121 3810000 – 0121 3819999 Nodemax Limited Allocated 2008-05-21
0121 3820000 – 0121 3829999 BT Allocated 1994-07-15
0121 3840000 – 0121 3849999 BT Allocated 1994-07-15
0121 3850000 – 0121 3859999 Wifinity Limited Allocated 2009-02-20
0121 3860000 – 0121 3869999 BT Allocated 1994-07-15
0121 3870000 – 0121 3879999 Gamma Telecom Holdings Limited Allocated 2021-03-11
0121 3880000 – 0121 3889999 Nexus Telecommunications Limited Allocated 2005-05-16
0121 3890000 – 0121 3899999 BT Allocated 2015-01-23
0121 3920000 – 0121 3929999 Magrathea Telecommunications Limited Allocated 2013-10-21
0121 3930000 – 0121 3939999 Colt Technology Services Allocated 2013-09-25
0121 3940000 – 0121 3949999 Fluency Communications Ltd Allocated 2013-10-07
0121 3950000 – 0121 3959999 BT Allocated 2013-11-28
0121 3960000 – 0121 3969999 Redwood Technologies Ltd Allocated 2018-11-15
0121 3980000 – 0121 3989999 Syntec Limited Allocated 2014-02-11
0121 3990000 – 0121 3999999 Fuse 2 Communications Ltd Allocated 2024-01-22
0121 3050000 – 0121 3059999 Not listed Protected Not recorded
0121 3100000 – 0121 3109999 Not listed Protected Not recorded
0121 3160000 – 0121 3169999 Not listed Protected Not recorded
0121 3170000 – 0121 3179999 Not listed Protected Not recorded
0121 3240000 – 0121 3249999 Not listed Protected Not recorded
0121 3410000 – 0121 3419999 Not listed Protected Not recorded
0121 3430000 – 0121 3439999 Not listed Protected Not recorded
0121 3700000 – 0121 3709999 Not listed Protected Not recorded
0121 3720000 – 0121 3729999 Not listed Protected Not recorded
0121 3830000 – 0121 3839999 Not listed Protected Not recorded
0121 3900000 – 0121 3909999 Not listed Quarantined Not recorded
0121 3910000 – 0121 3919999 Not listed Protected Not recorded
0121 3970000 – 0121 3979999 Not listed Protected Not recorded

Download all 100 ranges (CSV).

01213 allocation

Blocks whose local number starts with 3 under Birmingham (0121): 870,000 allocated numbers in 87 blocks.

Allocated
870,000 numbers · 87 blocks
Protected
120,000 numbers · 12 blocks
Quarantined
10,000 numbers · 1 block

Holders of 0121 3 numbers

BT holds 49.8% of the allocated numbers (420,000 numbers, 42 blocks).

Listed holders of 0121 3 by share of allocated numbers · 14 Oct 2026
HolderShareNumbersBlocksEarliest allocation
BT49.8%420,000421994-01-01
Vodafone Ltd (C&W)8.0%70,00072013-06-18
GCI Network Solutions Limited2.3%20,00022017-04-19
Gamma Telecom Holdings Limited2.3%20,00022017-11-20
Magrathea Telecommunications Limited2.3%20,00022004-03-01
Virgin Media Limited2.3%20,00022016-03-17
Alphatalk Limited1.1%10,00012014-01-31
Citrus Telecommunications Ltd1.1%10,00012005-01-11
Colt Technology Services1.1%10,00012013-09-25
Digital Space Group Limited1.1%10,00012007-11-29
Flextel Limited1.1%10,00012004-10-19
Fluency Communications Ltd1.1%10,00012013-10-07
Fuse 2 Communications Ltd1.1%10,00012024-01-22
Global Reach Networks Limited1.1%10,00012016-08-24
Liquid 11 Limited1.1%10,00012010-04-26
Lumen Technologies UK Limited1.1%10,00011999-09-09
Nexus Telecommunications Limited1.1%10,00012005-05-16
Nodemax Limited1.1%10,00012008-05-21
Pulsant (Scotland) Limited1.1%10,00012009-02-17
Reality Network Services Limited1.1%10,00012005-07-18
Redwood Technologies Ltd1.1%10,00012018-11-15
Resilient Limited1.1%10,00012006-11-29
Spitfire Network Services Limited1.1%10,00012006-06-27
Square Systems Limited1.1%10,00012007-10-26
Syntec Limited1.1%10,00012014-02-11
TTNC Limited1.1%10,00012013-11-14
Telappliant Limited1.1%10,00012009-02-03
TeleWare Group Limited1.1%10,00012013-02-21
Telecom2 Limited1.1%10,00012009-09-11
The Excell Group Limited1.1%10,00012008-11-10
Tuxtel Ltd1.1%10,00012009-11-05
VoIP-Un Limited1.1%10,00012007-10-25
Voicetec Systems Ltd1.1%10,00012006-06-22
Voxbone SA1.1%10,00012007-10-25
WAVECREST NETWORKS LIMITED1.1%10,00012019-12-16
Wifinity Limited1.1%10,00012009-02-20

Weekly changes for 01213

0 block changes from 19 Aug 2026 to 17 Oct 2026. Each week counts a block once.

01213 weekly changes since 19 Aug 2026
FromToChanged blocks
2026-08-192026-08-260
2026-08-262026-09-020
2026-09-022026-09-090
2026-09-092026-09-160
2026-09-162026-09-240
2026-09-242026-09-300
2026-09-302026-10-070
2026-10-072026-10-170

These numbers belong to 0121 Birmingham. Methodology.

01213 source: Ofcom s1.csv, published 14 Oct 2026. Download 0121 3 blocks (CSV). Contains Ofcom copyright material.

Source detail · 01213
01213 claim identifiers · release fc227d9e
ClaimValueIdentifier
allocated_numbers870000subcode:0121-3:allocated_numbers:fc227d9e:v1
allocated_records87subcode:0121-3:allocated_records:fc227d9e:v1
listed_holders36subcode:0121-3:listed_holders:fc227d9e:v1
area_code0121subcode:0121-3:area_code:fc227d9e:v1
first_digit3subcode:0121-3:first_digit:fc227d9e:v1
snapshot_date14 Oct 2026subcode:0121-3:snapshot_date:fc227d9e:v1