If I understand UK prefixes properly, wouldn't you actually be drop the 1 before looking? +44 9 or 90 or 904?
No, the trunk code in the UK is 0 which you don't dial on incoming international calls. Geographic UK numbers start with 1 or 2. I'm fairly sure that there are no premium or other exotic numbers in those ranges, so there's no point in putting anything longer than +441 in a rate table. The division between the city code and the local number varies depending on the initial digits, although the codes that start 19 are all four digits. There's a variety of city codes starting with 190, most of which date back to letter codes that map to 90, including 01900 ? Workington (WO) 01902 ? Wolverhampton (WO) 01903 ? Worthing (WO) 01904 ? York (YO) 01905 ? Worcester (WO) 01908 ? Milton Keynes, Wolverton (WO) 01909 ? Worksop (WO) I agree this is probably someone war dialing for abusable PBXes or the like. R's, John