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N9MD
Premium
join:2005-10-08
Wayne, NJ
 ·VOIPo
·ViaTalk
·PHONE POWER
·Callcentric
1 edit | reply to soitgoes2
Re: How does craigslist know I am using a VoIP service????
said by soitgoes2  :Apparently they use the services from reducefraud.com which does indeed attempt to identify the type of phone line it is. If you go here, you can see how your phone number is IDed (limit of 5 demo lookups per day--appears cookie-based): » www.reducefraud.com/demo/phoneid.php I've played around with the "reducefraud" site --- but I don't come up with the conclusions you've reached, soitgoes2.
It seems that this site is simply looking at the Area Code + Exchange + 1st digit (xxx-xxx-x---) to come up with the original NANPA assignment, not taking any inter-provider ports into account.
• My Verizon PSTN port to a ViaTalk VoIP account still shows as a "fixed line" (non-VoIP).
• My Verizon PSTN to Cingular/ATT/SBC cell phone still shows as a "fixed line", not cellular service.
• My NetZero VoIP DID port to Cingular/ATT/SBC cell phone still shows as a "non-fixed VoIP", not cellular service.
So, no matter how much porting goes on, the site you referenced only shows the originally assigned service for the number --- and, frankly, one can obtain more information form the »www.localcallingguide.com site.
If I recall correctly, the Sprint-Nextel site did provide up to date info on the current holder of a DID (PSTN, cellular, CLEC) at one time --- but because the site was overwhelmed by techies (probably all coming from the BBR Forums), they have blocked access. | |
soitgoes2
Premium
join:2005-01-14
·Future Nine Corpor..
2 edits | said by N9MD :I've played around with the "reducefraud" site --- but I don't come up with the conclusions you've reached, soitgoes2. I think we actually agree and have reached the same conclusion.
ReduceFraud.com claims to do more than it does, but all it seems to do is look at the original provider assignment of the NPA-NXX-X or NPA-NXX.
said by N9MD :If I recall correctly, the Sprint-Nextel site did provide up to date info on the current holder of a DID (PSTN, cellular, CLEC) at one time Yes, it did, so the technology/database exists. ReduceFraud.com just isn't using it/doesn't have access to it. That, too, isn't foolproof, but it would be more accurate than their current service. | |
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