01211 area code: Birmingham numbers starting 0121 1
01211 is not a separate area code. It is Birmingham (0121) followed by local numbers starting 1.
150,000 numbers are allocated in 15 blocks to 5 listed holders (Ofcom, 14 Oct 2026).
Check a 01211 number privately
Number ranges registered under 0121 1
| Number range | Listed holder | Status | Allocation date |
|---|---|---|---|
| 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 1070000 – 0121 1079999 | Not listed | Protected | Not recorded |
| 0121 1080000 – 0121 1089999 | Not listed | Protected | Not recorded |
| 0121 1090000 – 0121 1099999 | Not listed | Protected | Not recorded |
| 0121 1100000 – 0121 1109999 | Not listed | Protected | Not recorded |
| 0121 1130000 – 0121 1139999 | Not listed | Protected | Not recorded |
| 0121 1140000 – 0121 1149999 | Not listed | Protected | Not recorded |
| 0121 1150000 – 0121 1159999 | Not listed | Protected | Not recorded |
| 0121 1160000 – 0121 1169999 | Not listed | Protected | Not recorded |
| 0121 1170000 – 0121 1179999 | Not listed | Protected | Not recorded |
| 0121 1180000 – 0121 1189999 | Not listed | Protected | Not recorded |
| 0121 1190000 – 0121 1199999 | Not listed | Protected | Not recorded |
| 0121 1200000 – 0121 1209999 | Not listed | Protected | Not recorded |
| 0121 1240000 – 0121 1249999 | Not listed | Protected | Not recorded |
| 0121 1250000 – 0121 1259999 | Not listed | Protected | Not recorded |
| 0121 1260000 – 0121 1269999 | Not listed | Protected | Not recorded |
| 0121 1270000 – 0121 1279999 | Not listed | Protected | Not recorded |
| 0121 1280000 – 0121 1289999 | Not listed | Protected | Not recorded |
| 0121 1290000 – 0121 1299999 | Not listed | Protected | Not recorded |
| 0121 1300000 – 0121 1309999 | Not listed | Protected | Not recorded |
| 0121 1330000 – 0121 1339999 | Not listed | Protected | Not recorded |
| 0121 1340000 – 0121 1349999 | Not listed | Protected | Not recorded |
| 0121 1350000 – 0121 1359999 | Not listed | Protected | Not recorded |
| 0121 1360000 – 0121 1369999 | Not listed | Protected | Not recorded |
| 0121 1370000 – 0121 1379999 | Not listed | Protected | Not recorded |
| 0121 1380000 – 0121 1389999 | Not listed | Protected | Not recorded |
| 0121 1390000 – 0121 1399999 | Not listed | Protected | Not recorded |
| 0121 1400000 – 0121 1409999 | Not listed | Protected | Not recorded |
| 0121 1410000 – 0121 1419999 | Not listed | Protected | Not recorded |
| 0121 1420000 – 0121 1429999 | Not listed | Protected | Not recorded |
| 0121 1430000 – 0121 1439999 | Not listed | Protected | Not recorded |
| 0121 1440000 – 0121 1449999 | Not listed | Protected | Not recorded |
| 0121 1450000 – 0121 1459999 | Not listed | Protected | Not recorded |
| 0121 1460000 – 0121 1469999 | Not listed | Protected | Not recorded |
| 0121 1470000 – 0121 1479999 | Not listed | Protected | Not recorded |
| 0121 1480000 – 0121 1489999 | Not listed | Protected | Not recorded |
| 0121 1490000 – 0121 1499999 | Not listed | Protected | Not recorded |
| 0121 1500000 – 0121 1509999 | Not listed | Protected | Not recorded |
| 0121 1510000 – 0121 1519999 | Not listed | Protected | Not recorded |
| 0121 1520000 – 0121 1529999 | Not listed | Protected | Not recorded |
| 0121 1530000 – 0121 1539999 | Not listed | Protected | Not recorded |
| 0121 1540000 – 0121 1549999 | Not listed | Protected | Not recorded |
| 0121 1550000 – 0121 1559999 | Not listed | Protected | Not recorded |
| 0121 1560000 – 0121 1569999 | Not listed | Protected | Not recorded |
| 0121 1570000 – 0121 1579999 | Not listed | Protected | Not recorded |
| 0121 1580000 – 0121 1589999 | Not listed | Protected | Not recorded |
| 0121 1590000 – 0121 1599999 | Not listed | Protected | Not recorded |
| 0121 1610000 – 0121 1619999 | Not listed | Protected | Not recorded |
| 0121 1620000 – 0121 1629999 | Not listed | Protected | Not recorded |
| 0121 1630000 – 0121 1639999 | Not listed | Protected | Not recorded |
| 0121 1640000 – 0121 1649999 | Not listed | Protected | Not recorded |
| 0121 1650000 – 0121 1659999 | Not listed | Protected | Not recorded |
| 0121 1660000 – 0121 1669999 | Not listed | Protected | Not recorded |
| 0121 1670000 – 0121 1679999 | Not listed | Protected | Not recorded |
| 0121 1680000 – 0121 1689999 | Not listed | Protected | Not recorded |
| 0121 1690000 – 0121 1699999 | Not listed | Protected | Not recorded |
| 0121 1700000 – 0121 1709999 | Not listed | Protected | Not recorded |
| 0121 1710000 – 0121 1719999 | Not listed | Protected | Not recorded |
| 0121 1720000 – 0121 1729999 | Not listed | Protected | Not recorded |
| 0121 1730000 – 0121 1739999 | Not listed | Protected | Not recorded |
| 0121 1740000 – 0121 1749999 | Not listed | Protected | Not recorded |
| 0121 1750000 – 0121 1759999 | Not listed | Protected | Not recorded |
| 0121 1760000 – 0121 1769999 | Not listed | Protected | Not recorded |
| 0121 1770000 – 0121 1779999 | Not listed | Protected | Not recorded |
| 0121 1780000 – 0121 1789999 | Not listed | Protected | Not recorded |
| 0121 1790000 – 0121 1799999 | Not listed | Protected | Not recorded |
| 0121 1800000 – 0121 1809999 | Not listed | Protected | Not recorded |
| 0121 1810000 – 0121 1819999 | Not listed | Protected | Not recorded |
| 0121 1820000 – 0121 1829999 | Not listed | Protected | Not recorded |
| 0121 1830000 – 0121 1839999 | Not listed | Protected | Not recorded |
| 0121 1840000 – 0121 1849999 | Not listed | Protected | Not recorded |
| 0121 1850000 – 0121 1859999 | Not listed | Protected | Not recorded |
| 0121 1860000 – 0121 1869999 | Not listed | Protected | Not recorded |
| 0121 1870000 – 0121 1879999 | Not listed | Protected | Not recorded |
| 0121 1880000 – 0121 1889999 | Not listed | Protected | Not recorded |
| 0121 1890000 – 0121 1899999 | Not listed | Protected | Not recorded |
| 0121 1900000 – 0121 1909999 | Not listed | Protected | Not recorded |
| 0121 1910000 – 0121 1919999 | Not listed | Protected | Not recorded |
| 0121 1920000 – 0121 1929999 | Not listed | Protected | Not recorded |
| 0121 1930000 – 0121 1939999 | Not listed | Protected | Not recorded |
| 0121 1940000 – 0121 1949999 | Not listed | Protected | Not recorded |
| 0121 1950000 – 0121 1959999 | Not listed | Protected | Not recorded |
| 0121 1960000 – 0121 1969999 | Not listed | Protected | Not recorded |
| 0121 1970000 – 0121 1979999 | Not listed | Protected | Not recorded |
| 0121 1980000 – 0121 1989999 | Not listed | Protected | Not recorded |
| 0121 1990000 – 0121 1999999 | Not listed | Protected | Not recorded |
01211 allocation
Blocks whose local number starts with 1 under Birmingham (0121): 150,000 allocated numbers in 15 blocks.
- Allocated
- 150,000 numbers · 15 blocks
- Protected
- 850,000 numbers · 85 blocks
Holders of 0121 1 numbers
Vodafone Ltd (C&W) holds 53.3% of the allocated numbers (80,000 numbers, 8 blocks).
| Holder | Share | Numbers | Blocks | Earliest allocation |
|---|---|---|---|---|
| Vodafone Ltd (C&W) | 53.3% | 80,000 | 8 | 2013-07-31 |
| BT | 20.0% | 30,000 | 3 | 1997-11-17 |
| Dynamic Mobile Billing Limited | 13.3% | 20,000 | 2 | 2008-01-24 |
| Colt Technology Services | 6.7% | 10,000 | 1 | 2001-08-29 |
| Xoom Ltd | 6.7% | 10,000 | 1 | 2019-09-16 |
Weekly changes for 01211
0 block changes from 19 Aug 2026 to 17 Oct 2026. Each week counts a block once.
| 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 |
These numbers belong to 0121 Birmingham. Methodology.
01211 source: Ofcom s1.csv, published 14 Oct 2026. Download 0121 1 blocks (CSV). Contains Ofcom copyright material.
Source detail · 01211
| Claim | Value | Identifier |
|---|---|---|
| allocated_numbers | 150000 | subcode:0121-1:allocated_numbers:fc227d9e:v1 |
| allocated_records | 15 | subcode:0121-1:allocated_records:fc227d9e:v1 |
| listed_holders | 5 | subcode:0121-1:listed_holders:fc227d9e:v1 |
| area_code | 0121 | subcode:0121-1:area_code:fc227d9e:v1 |
| first_digit | 1 | subcode:0121-1:first_digit:fc227d9e:v1 |
| snapshot_date | 14 Oct 2026 | subcode:0121-1:snapshot_date:fc227d9e:v1 |