The Area Codes of United Kingdom:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Insch | 01464 (+441464) |
| 2. | Inveraray | 01499 (+441499) |
| 3. | Inverness | 01463 (+441463) |
| 4. | Inverurie | 01467 (+441467) |
| 5. | Ipstones | 01538 (+441538) |
| 6. | Ipswich | 01473 (+441473) |
| 7. | Isle of Arran | 01770 (+441770) |
| 8. | Isle of Benbecula, Outer Hebrides | 01870 (+441870) |
| 9. | Isle of Man | 01624 (+441624) |
| 10. | Isle of Wight | 01983 (+441983) |
| 11. | Isles of Scilly | 01720 (+441720) |