[cisco-voip] Determining if a DID block is available?

[Robert Kulagowski]

On Wed, Aug 31, 2011 at 1:10 PM, William Paris
<wparis at independenthealth.com> wrote:
> Bob, you could go to the NANPA website (http://www.nanpa.com), download the utilized/available NPA-NXX file for your area, and determine of your dialtone vendor and/or vendors competitor has been allocated any new blocks of number recently. Other than that you're at the mercy of your vendor.. .

Right, but that report doesn't have granularity below the NXX level,
so I can't find out if the 50 DIDs after my block of 00 to 49 are
allocated to anyone else. :(