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