The Area Codes of United Kingdom: City/Town or RegionArea code 1.Insch01464 (+441464) 2.Inveraray01499 (+441499) 3.Inverness01463 (+441463) 4.Inverurie01467 (+441467) 5.Ipstones01538 (+441538) 6.Ipswich01473 (+441473) 7.Isle of Arran01770 (+441770) 8.Isle of Benbecula, Outer Hebrides01870 (+441870) 9.Isle of Man01624 (+441624) 10.Isle of Wight01983 (+441983) 11.Isles of Scilly01720 (+441720)