>>> If I was to try a bit of war dialling are there any numbers I can
>>> ignore. I know about 999, 112, 123 but wondered if there are ranges of
>>> numbers, after the area code, I can ignore.
>>
>>Yes, Ofcom publish the ranges which are allocated. See
>>
http://www.ofcom.org.uk/telecoms/ioi/numbers/numbers administered
>>
>>E.g. For my own area, 01926 if the whole range 01926 000000 to 01926
>>999999 were allocated that would be a million numbers. The Ofcom data
>>shows the 54 complete ranges of 10,000 numbers and 34 ranges of 1,000
>>numbers which have actually been allocated in 01926. I.e. there are only
>>574,000 potentially valid numbers in 01926, the unallocated 426,000 can
>>all be ignored.
>>
>>Note that although local numbers starting 0 or 1 wont be dialable
>>without the code, some ranges are allocated. They can only be used
>>in full national form. E.g. in 01926 the range 10xxxx is allocated.
>
> Thanks for that. Its just the sort of info. I was after.
> Ive got 1000 numbers to try and should be able to ignore a fair few
> of them now. (or at least try them last)