<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">BTW, I have tried contacting Paul at Telcodata, are you sure he's still in business?<br><br>Thanks<br><div>Alan<br></div><br><br>--- On <b>Thu, 7/31/08, Alex Balashov <i><abalashov@evaristesys.com></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;">From: Alex Balashov <abalashov@evaristesys.com><br>Subject: Re: [asterisk-biz] Wireless lookup service<br>To: "Commercial and Business-Oriented Asterisk Discussion" <asterisk-biz@lists.digium.com><br>Date: Thursday, July 31, 2008, 11:22 PM<br><br><pre>Not that many numbers are ported--especially wireless numbers as you say.<br><br>But be aware that querying NANPA blocks is not enough; for 10,000 <br>blocks, you can just get the office code spreadsheet off their site.<br><br>But many blocks are pooled into thousand blocks, which is a
system <br>administered by Neustar. 678-336 is an example. To see how it's split <br>up, you can go to www.nationalpooling.com. Telcodata.us and <br>localcallingguide.com will also tell you this, although not always in a <br>wholly up-to-date manner.<br><br>Nationalpooling.com, unlike some of the buried resources on NANPA's <br>site, appears to be specifically designed to prevent automated data <br>collection and scraping. I imagine it is possible to get the data from <br>them in a more machine-processable way, but it requires that you be a <br>carrier (try to sign up for an account to see what I mean).<br><br>As Nathan said, you will still be mostly right, most of the time, <br>without LNP dips. Relatively few ports go on in the wireline world <br>outside of business related to VoIP service providers, which are a very <br>DID-intensive industry.<br><br>Nathan Shadle wrote:<br><br>> So this is a loaded question...<br>> <br>> The short,
yet inaccurate, answer is that I use http://telcodata.us/<br>> <br>> The longwinded answer goes like this:<br>> With the advent of Number Portability (both Local Number Portability and <br>> Wireless Number Portability), that data changes on a day-to-day basis as <br>> users swap from provider to provider, and other reasons numbers might <br>> shift from one carrier to another. The only true maintainer of which <br>> provider serves a particular number is NANPA (which contracts Neustar to <br>> handle this), which is who the carriers report their changes and ports <br>> to. Even the major carriers get daily updates to this data, or they <br>> query Neustar themselves.<br>> <br>> There are a number of somewhat expensive methods to access this data <br>> (I say expensive to mean it's cost prohibitive for many small <br>> businesses). Most revolve around getting SS7 access (equipment and <br>> service) or
getting an account with Neustar directly (which often <br>> requires you to be a carrier yourself). You can pay a number of <br>> companies like Verisign or NetNumber per query (which, just get their <br>> data from Neustar). You might be able to locate a provider who will <br>> offer to provide queries for you, say, through HTTP, but I'm<br>reasonably <br>> certain (if I remember correctly from my Neustar legal documentation) <br>> that they expressly forbid this, and require that the data just be used <br>> for routing.<br>> <br>> So, your best bet might be to use a database like I've mentioned above<br><br>> with a "best guess" approach. All my research leads me to<br>believe you'll <br>> get somewhere around 95% accuracy, though perhaps more for wireless <br>> because people tend not to port wireless numbers as frequently.<br>> <br>> Nathan<br><br>-- <br>Alex Balashov<br>Evariste Systems<br>Web :
http://www.evaristesys.com/<br>Tel : (+1) (678) 954-0670<br>Direct : (+1) (678) 954-0671<br>Mobile : (+1) (706) 338-8599<br><br>_______________________________________________<br>--Bandwidth and Colocation Provided by http://www.api-digital.com--<br><br>AstriCon 2008 - September 22 - 25 Phoenix, Arizona<br>Register Now: http://www.astricon.net<br><br>asterisk-biz mailing list<br>To UNSUBSCRIBE or update options visit:<br> http://lists.digium.com/mailman/listinfo/asterisk-biz<br></pre></blockquote></td></tr></table><br>