> Do most ITSPs block +44 70x? Are there other numbers like this that should
> be blocked? Is it only ITSPs that block it, where traditional telephony
> companies are simply more than happy to connect your call? Are ITSPs here
> to provide dial-tone and connectivity regardless of how good or bad the
> call might be?
For the UK, I'd suggest blocking anything starting +44 70 ("personal numbering
services" - anything from 5p to 50p / min), and definitely anything starting
+44 9 ("premium rate services").
You might also want to block +44 871 and 870 (the latter might be more
contentious - it's used by a lot of call centres).
Worth mentioning that unlike some countries, there are maximum charges per
minute - to the best of my knowledge you simply can't create a number with a
charge of £500/min or something silly like that. If you want a rough idea of
call termination charges for different dialling codes, the BT price list
(www.bt.com) is a good starting point.
Regards,
Chris
--
C.M. Bagnall, Director, Minotaur I.T. Limited
For full contact details visit http://www.minotaur.it/chris.html
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