Prefissi Regno Unito Prefissi di Regno Unito: Città /paese o regione Prefisso 1.Macclesfield016252.Machynlleth016543.Madingley019544.Magherafelt (Northern Ireland)028795.Maidenhead016286.Maidstone016227.Maldon016218.Mallaig016879.Malmesbury0166610.Malton0165311.Malvern0168412.Manchester016113.Mansfield0162314.Market Deeping/Bourne0177815.Market Drayton0163016.Market Harborough0185817.Market Rasen0167318.Market Weighton and North Cave0143019.Marlborough0167220.Martin0152621.Martinstown (Northern Ireland)0282122.Matlock0162923.Maud0177124.Maybole0165525.Medway0163426.Melton Mowbray0166427.Meriden0167628.Merthyr Tydfil0168529.Mid Yell0195730.Middlesbrough0164231.Milford Haven0164632.Milton Keynes0190833.Minehead0164334.Moffat0168335.Mold0135236.Monmouth0160037.Montrose0167438.Moretonhampstead0164739.Morpeth0167040.Moscow0156041.Motherwell01698