Dug up this old thread to say that this talk by Matt Florell of ViciDIAL fame might be edifying:
https://www.youtube.com/watch?v=L8iqgZ5bLaw — Alex > On Aug 31, 2018, at 4:12 PM, Ryan Delgrosso <[email protected]> wrote: > > So today its mostly reputation scoring aggregators. > > The two biggest that come to mind are whitepages.com (they own Hiya) and > NextCaller. > > There is some secret sauce, but the scoring algorithm is based on incoming > query volume, LERG lookups, LIDB lookups, and of course user feedback from > the freemium app Hiya which is in wide distribution. > > I know nextcaller has some deeper hooks with major providers allowing them > more accurate info (such as correlating an active call on the owning provider > with the call youre dipping about etc), but their focus isnt SPIT protection, > its an enterprise focused product and is priced as such. > > Google (Android) now ships with this in the OS, and I presume they are > leveraging one of these datasources since the call classifications match my > whitepages dips. For network providers doing this, its generally just an > appserver the call passes through that will do the dip, and modify the call > headers for later behavioral changes (or at least that's how I have built it > and seen it implemented). In a freeswitch ecosystem I just build the dialplan > conditionally based upon the dip (so changing PAI or potentially even punting > to VM). > > I have reached out to my contact with whitepages.com about how to contest an > inaccurate ranking in the past, and they dont see well equipped to do much > about it yet, BUT in my case it was a newly assigned number that had been > previously used by a bad actor and abandoned. It righted itself pretty quick > when the bad call volumes stopped. > > > On 8/30/2018 3:27 PM, Alex Balashov wrote: >> Hi, >> >> So, of course, it is a known problem in the legitimate side of the lead >> engagement call centre, survey, etc. business that ANIs get flagged as >> "telemarketer" pretty quickly and start showing up that way on people's >> phones. >> >> Your normative viewpoint on that may vary depending on what you think of >> lead gen calls, but regardless, a reasonable person would differentiate >> between: >> >> (1) Legitimate outbound dialing operations that are following up with >> leads who provided their phone number and agreed to be called (at least, >> as a matter of clicking "accept" on _something_), or for some other >> legitimate mass-dialing purpose, and who actually own the DID inventory >> from which they present local-market ANIs and can in fact be reached on >> those numbers; >> >> (2) Illegal spammers who use fake ANIs and call people who did not in >> any way consent to being called by them. >> >> I am trying to learn a bit more about how this is done and what a >> legitimate, above-board business can do about it. >> >> Ignoring the factor of third-party call-screening apps (which most >> people with a mobile don't use), where is this generally implemented? As >> I understand it, T-Mobile do it on the network level. I have T-Mobile >> myself, and probably 2/3rds of unfamiliar numbers, including quite >> legitimate ones, show up as "Scam Likely" — I know that's come up on the >> list before. AT&T displays "Telemarketer"; do they do it that way too, >> or do they use a Google Android feature for that which they enable as >> part of their carrier defaults for carrier-issued phones? What about >> other carriers and Android? >> >> As far as I know, Apple don't do anything like this. Do people with >> iPhones just not receive this "service"? How does that work? >> >> Asking where the central, or the most influential authority lies and who >> provides it goes to the heart of the real question, which is: what can a >> legitimate business do if their number has been blacklisted this way? As >> I understand it, the maintainers of these lists, along with the criteria >> for getting on them, are elusive and inscrutable, and there's really no >> recourse and no appeals process. I furthermore understand that this has >> led to the widespread approach of rotating ANIs, but that's a losing >> battle; they get flagged too. I imagine it won't be long before the >> criteria for "Scam Likely" are just "number appears to call lots of >> numbers in this rate centre and otherwise hasn't been around very long". >> >> But this is all just conjecture on my part; I really don't know much >> about how my carrier, anyone's carrier, or some BigCo that's behind my >> mobile OS decides that a call is a "telemarketer" or "scam" call. If >> anyone can shed some light on how this really works and what, if >> anything can be done about it, I would be most appreciative. >> > > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ VoiceOps mailing list [email protected] https://puck.nether.net/mailman/listinfo/voiceops
