578 B
578 B
| 1 | Format | Parent Format | Comment |
|---|---|---|---|
| 2 | 20X XXX XXXX | fixed_2/4/4 | Historical London format before it moved to a two-digit area code |
| 3 | 20X XXXX XXX | fixed_2/4/4 | Historical London format before it moved to a two-digit area code |
| 4 | 20 XXXX XX XX | fixed_2/4/4 | Commonly used London format |
| 5 | XXXX XXX XXX | fixed_4/5-6 | |
| 6 | XXXX XXX XXX | mobile_4/6 | |
| 7 | XXX XXXX XXX | mobile_4/6 | |
| 8 | XXX XXXX XXX | fixed_3/3/4 | |
| 9 | XXX XXX XXX | tollfree_3/6 | |
| 10 | 3XXX XXX XXX | fixed_3/3/4 | UAN numbers beginning with 3 are also often formatted with a 4-digit first group (many search results) |