[VoiceOps] Valid number testing

[Paul Timmins]

On 08/05/2010 03:07 PM, Alex Balashov wrote:
> Neustar does have an LNP-over-SIP product, but it's quite expensive 
> and restrictive in the usual way.  The best bet for real-time queries 
> is to go to an STP operator like VeriSign who resells this 
> information[1], or someone like Broadvox, who presumably resells that 
> or something fraternal.
>
> [1] By some commercial and legal means I fail to understand, for, as 
> someone pointed out earlier, in theory disclosure of NPAC data 
> requires that whoever you're disclosing it to to also have NPAC NDAs 
> on file for the NPAC territories, and generally they try to keep this 
> info within the carrier space. 

This is because the carrier data is considered CPNI and can't be used 
for marketing and other things. IIRC