(Probably out of hours) I suggest you try numbers after that one to see if you get the recording on the 0870.

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02072418600, 02072418601, 02072418602, 02072418603.... etc etc

I suggest you make a note of what you get on each number, eg fax, no answer, out of service, busy etc. Also, make a note of which answer as someone's personal extension number, ie where you get an answerphone saying something like "This is John Smith, please leave a message..." Those numbers are presumably not the ones you're after.

*Hopefully* (although not always) some will answer with the same messages as the NGNs, that way you know (or can be quite certain) that these are the geographical number(s) that the NGNs go to.

This is how we've found some of the numbers on this site. Often, switchboard/reception numbers start 00 and other direct dial numbers follow on. OK, so it doesn't always work, and you may get another company/residential, but it's worth a try. You may also have to ring through several hundred (or more) numbers, depending on the size of the company.

Saying what ??   

. . . and then what about the next five or more numbers - 05. 06, 07, 08, 09, 10  ??? What result for them please ? 

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That number belongs to a automated call handling system. Its not related to dial a phone.

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I think it is!

I've discovered this same system when looking for numbers for another company. It allows you to dial other extension numbers, that way you can go through their extensions without needing to redial. I suspect that this "Automated Call Handling System" comes on where a DDI number goes to an extension which doesn't exist.

OK, I don't know for certain that this number is Dial-a-Phone, but it certainly appears to be some company's prefix.

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What I'm suggesting is that the NGNs go to one (or more) of their direct dial numbers. You have the prefix, so it's a case of trying many. That's how numbers have been found for this site. That is, what appear to be those that the NGNs go to as they answer with the same message.

OK, so most will probably be someone's private extension. Knowing which numbers are will help to eliminate those that aren't what you're after.

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The automated call handling system is a way of dialing extensions (other than dialing them direct). So should you find that there are other extensions which have a different prefix, you have another way in, as it were, to dial those extensions.

please does anyone know dial a phone alternative number.