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soitgoes2
Premium
join:2005-01-14
 ·Future Nine Corpor..
1 edit | Re: How does craigslist know I am using a VoIP service???? 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
They have at least the following categories:
Mobile
Mobile telephones are provided by companies such as Verizon, Cingular, or Sprint. Users of these phones must sign contracts, making these telephone numbers traceable. These phone numbers are generally low-risk. However, some prepaid mobile phones will be identified as Mobile. Internationally, phones identified as mobile may also include TETRA mobile phones, cordless access systems, proprietary fixed radio access, and fixed cellular systems
IDed: AT&T, Verizon, T-Mobile prepaid
Fixed Line
Fixed-line phones include traditional landline phones and VOIP phones that can be traced back to a particular address and cannot be obtained by a user outside the phone number\'s designated country. Because these phone numbers are traceable, they are low-risk.
(IDed: Vonage number, Future-Nine temporary number, old Qwest number which was ported to Vonage and then Future-Nine)
Non-fixed VOIP
Voice Over Internet Protocol (VOIP) phone numbers are Internet-based telephone numbers. Non-fixed VOIP telephone numbers can easily be obtained by users who are not located in the country associated with the telephone number. They are untraceable and disposable; some can even be obtained for free. This means that a fraudster in Romania could easily obtain a US-based telephone number using a non-fixed VOIP service and receive a call to this number in his/her home in Romania.
IDed: GrandCentral, k7, IPKall, Callwave, VoiceStick
Prepaid Mobile
(I don't have a number that came up like this--my T-Mobile prepaid number came up like a normal mobile)
Toll-Free
Toll-Free numbers are numbers starting with toll-free area codes, such as (800) numbers. Although sometimes used by legitimate users calling from companies, fraudsters can easily obtain toll-free numbers that either forward to their telephone which is located in another country or toll-free numbers that terminate at an Internet voicemail box. Toll-free numbers always forward to non-toll-free numbers. For this reason, any legitimate user who provides a toll-free number and is asked to provide a non-toll-free number will be able to do so. We therefore recommend blocking users of tollfree numbers
I believe Craigslist will deny you if the number comes up as Prepaid Mobile, VoIP, or Toll-Free. | |
|  | | soitgoes2
Premium
join:2005-01-14 | Re: How does craigslist know I am using a VoIP service???? Do you have one of those Ohio (567) Future Nine numbers or one from another area? (FN uses a different provider for them.)
You can check more numbers is you just delete the cookie from reducefraud.com with COUNT in it. | |
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N9MD
Premium
join:2005-10-08
Wayne, NJ
·VOIPo
·ViaTalk
·PHONE POWER
·Callcentric
1 edit | 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 | Re: How does craigslist know I am using a VoIP service???? 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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burgerwars
join:2004-09-11
Northridge, CA
·voip.ms
 ·RoadRunner Cable
| 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.phpI believe Craigslist will deny you if the number comes up as Prepaid Mobile, VoIP, or Toll-Free. I tried it and my cellphone came up as VoIP. This is because I ported this number from a VoIP company last year. So it looks like it only knows how the number originated, and not that it has gone through a port. | |
| zaldy
join:2007-12-07
·OneSuite
1 edit | 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 put in my Onesuite VoIP number and it shows fixed line and I put in another VoIP number and it shows Non-fixed voip. It's inconsistent at the moment. | |
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