Re: [VoiceOps] Landline vs Mobile Lookup

[John Levine via VoiceOps]

It appears that Christopher Aloi via VoiceOps  said:
>We have customers sending text messages out and are looking to
>scrub landlines from their lists.  I have found a few, pricing seems a bit
>all over the place.  Thanks for the reply.

Does VoIP count as landline or mobile? I have a bunch of VoIP numbers
which get text messages just fine, so long as often buggy systms
are willing to send them.

R's,
John
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Re: [VoiceOps] iNum and UN numbers via ex Voxbone now Bandwidth

[John Levine]

It appears that James Cloos  said:
>things do not look good:
>;; AUTHORITY SECTION:
>0.0.1.5.3.8.8.e164.arpa. 86400  IN  NS  ns1.inum.net.
>0.0.1.5.3.8.8.e164.arpa. 86400  IN  NS  ns2.inum.net.

>i've no idea about +888.

Looks just as bad:

; AUTHORITY SECTION:
8.8.8.e164.arpa.86400   IN  NS  ns1.inum.net.
8.8.8.e164.arpa.86400   IN  NS  ns2.inum.net.

R's,
John
-- 
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John Levine, jo...@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly
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Re: [VoiceOps] VoIP is a restricted business?

[John Levine]

It appears that Carlos Alvarez  said:
>
>I'm not aware of some VoIP banking issue in the US, but you didn't specify
>the country.  I've never heard of Wise. 

It's what used to be called Transferwise.  They were originally a FX provider
but now they provide multi-currency accounts which look a whole lot like
bank accounts.

>Individual companies may have their own policies, like this.  Wells Fargo
>and Chase, I can tell you from experience, is happy to have our business.

FWIW, USD balances at Wise are held at Wells Fargo.

R's,
John
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Re: [VoiceOps] National Do Not Call Registry"

[John Levine]

It appears that Ryan Finnesey  said:

>I was wonder what others were doing to license the National Do Not Call 
>Registry?  It seems I cannot license the data set and give
>access to multiple customers?

Items 36 through 38 in the FTC's FAQ appear to address this question.

https://www.ftc.gov/tips-advice/business-center/guidance/qa-telemarketers-sellers-about-dnc-provisions-tsr

R's,
John
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Re: [VoiceOps] SMS Spam from 77088 Amazon Alerts?

[John Levine]

It appears that Peter Beckman  said:
>Is it possible that some service is allowing someone who is NOT the owner
>of 77088 to send SMS messages pretending to be 77088? Did someone get into
>Amazon's account or 3rd party account?

Amazon's Simple Notification Service lets you send SMS from a short code.
The registration process is fairly complex and the code costs $1000/mo but
it can be worth it if your company is big enough and does a lot of B2C.

My guess is that someone broke into the account of the AWS customer that
actually uses code 77088.

R's,
John
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Re: [VoiceOps] AT Verizon to block text messaging

[John Levine]

In article  you write:
>There are lots of extremely legitimate applications for A2P, such as 
>appointment reminders, notifications that laundry is done, our network outage
>monitoring system. If that went away, it would just move to some other table 
>over the top platform.

Yes, I know.  If they move to something else, that is swell since I probably 
won't have it installed on my phone.

R's,
John
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Re: [VoiceOps] AT Verizon to block text messaging

[John Levine]

In article  you write:
>Spotify is a terrible example. People listen to one song at a time, and
>choose the songs they listen to.
>
>Unwanted A2P SMS is more akin to unwanted commercial mail.

It is also, for anyone who hasn't been paying attention, completely illegal.

I expect my opinion is not unusual that if the only way to get rid of illegal 
unwanted A2P
is to get rid of A2P altogether, that would be fine with me.

R's,
John


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Re: [VoiceOps] Definition: Local Calls

[John Levine]

In article <1038462169.17163.1607448901620.JavaMail.mhammett@Thunderfuck2> you 
write:
>My operating theory is that if it's on the same tandem switch, I might as well 
>treat it as local. 

If only. At my rural ILEC, the next town up is a remote from the
switch in my town but for historical reasons they are not local to
each other so at least for people who haven't switched to bundled
plans, calls between them take a 150 mile detour to the tandem and
back.

That particular tandem also covers places 250 miles from here. I guess
it's nice if that's local.

R's,
John
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Re: [VoiceOps] Area code 886

[John Levine]

In article  
you write:
>Does anyone know if area code 886 was allocated to Canada and if yes where
>in Canada? We were just told by an international vendor that it is a new
>area code in Canada yet I can't find anything on it.

You can check the definitive NANPA list at https://nationalnanpa.com/

It says that 886 is reserved for toll-free expansion. Your vendor is
confused.

A long time ago, codes 880, 881, and 882 were used for paid
international calls to North American 800, 888, and 877 numbers, so
they might be telling you a garbled version of that. That hack went
away 15 years ago and those codes are now also reserved for toll-free
expansion.

-- 
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John Levine, jo...@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly
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Re: [VoiceOps] Get ready for a weird dialplan change. 9-8-8 suicide hotline.

[John Levine]

In article  
you write:
>
>Fortunately, all we have to do is setup call forwarding for 988 calls to go
>to +1-800-273-8255

For places where you dial 9 for an outside line, are you adding rules for 9-88, 
9-988,
both? Neither?

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Re: [VoiceOps] Odd Routing to Iowa

[John Levine]

In article <1464181553.3249.1577818986090.JavaMail.mhammett@ThunderFuck> you 
write:
>-=-=-=-=-=-
>-=-=-=-=-=-
>
>The entity I'm calling is based out of Goldfield, so in this particular case, 
>it isn't malicious. I'm not going to deny
>that there could be other malicious uses of that exchange. 

Adding to the confusion, Goldfield Telecom sells and installs telco equipment.

Their local phone company is an apparently unrelated entity called
Goldfield Telephone, with a web site at www.goldfieldaccess.net with
an expired SSL certificate.

It's a tiny single switch RLEC.  If they have a conference bridge,
that screams traffic pumping.

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Re: [VoiceOps] STIR/SHAKEN Discussion: Will it help?

[John Levine]

In article  you write:
>  Sure, but have you ever tried to contact a carrier for which you do not
>  have a business relationship and get them to do something, and you are
>  smaller and less consequential than they are?
>
>  We can block Hooli, but now OUR customers are livid, and Hooli doesn't
>  really care.

It's more subtle than that.  The signature from Hooli is a signal you
can stir into your spam filters.  If the call comes from them and the
calling number isn't one you'd expect them to host, that's a pretty
strong signal your customer won't be happy to get the call.

R's,
John

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Re: [VoiceOps] SIP Credential Strength / Domestic Fraud

[John Levine]

In article <20191213175459.GD1788@tlaquepaque.localdomain> you write:
>A crude analysis of wholesale termination decks for +1 641-741[1] reveals 
>prices
>in the range of $0.019/min to $0.22/min, so yeah, termination arbitrage.

>> In article 
>>  you 
>> write:
>> >Arbitrage scam, that's still one of those local monopolies most likely.
>> 
>> Killduff Telephone has one switch with two prefixes so, yeah, termination 
>> arbitrage.

Does that mean that someone in Killduff is in on the scam, or do they do routing
tricks so the calls don't actually go there?

R's,
John
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Re: [VoiceOps] SIP Credential Strength / Domestic Fraud

[John Levine]

In article  
you write:
>Arbitrage scam, that's still one of those local monopolies most likely.

Killduff Telephone has one switch with two prefixes so, yeah, termination 
arbitrage.

R's,
John


>
>
>On Fri, Dec 13, 2019 at 9:51 AM Dave Sill  wrote:
>
>> All,
>>
>> We recently saw fraudulent calls via compromised SIP credentials to
>> Killduff, IA.  Any thoughts on why?
>>
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Re: [VoiceOps] Carrier who can port Clayton NM

[John Levine]

In article  you write:
>On a more general topic, what is the best way to reach carriers like ENMR
>when your usual suspects are unable to port a number in such an area?
>
>We've seen this before, where a wireless carrier has most of the blocks in
>a given ratecenter and then there's a small LEC nobody has ever heard of
>outside of that ratecenter and it seems to be difficult to move the number.
>
>We've always just told the customer that we aren't able to help them, but
>to reach out to that local carrier, for which we rarely can find contact
>information for.

A few moments of googlage finds that telco's web site:

https://www.plateautel.com/products/voice/#/clayton

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Re: [VoiceOps] Fax ATAs/devices

[John Levine]

In article 

 you write:
>Fax will not die, at least not anytime soon. Many business processes exist 
>that count on fax.
>
>There is a misconception that it is more secure than other document 
>transmission methods.

That's exactly it.  I needed to send a scan of a form to a nearby
university medical clinic, and they insisted that I fax it.  I asked
can I email a PDF, oh, no, we're under constant attack, e-mail is too
dangerous.  The fact that faxing it involved sending it to some random
third party pdf->fax service that put their blurb on the cover sheet
did not deter them.

R's,
John
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Re: [VoiceOps] AT / Onvoy / Vonage call routing screwup after LNP

[John Levine]

>I do not have inside knowledge as to whether Onvoy appropriately notified 
>Vonage of the port-out, ...

Ah, Vonage.

Back when they were young, they didn't plan adequately for growth so
their service was chaotic and their customer service was worse.  So I
ported my number to another VoIP provider, despite Vonage claiming
that one couldn't do that.  (Presumably in the chaos they neglected to
veto the port-out.)

A little later, I started getting calls from a crabby guy who asked
what I was doing to his daughter.  As it turned out, Vonage lost all
track of the port-out and they assigned my number to a new customer, a
local student.  When she called her father, my number showed up on the
caller ID, when he called that number, he got me.  This was long
enough ago that few people knew about number portability, and in that
era the explanation "her phone company is run by nitwits" did not yet
have the resonance it does today.  I told him to tell her to tell
Vonage to give her another number, but good luck with that.

By fortunate coincidence, I happened to know a member of Vonage's
board of directors, dropped him an e-mail and soon got a lengthy
brown-nosing apology (on my cell phone while in England for
$2/minute.)  Lacking that contact, I expect I'd still be arguing with
her father.

R's,
John
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Re: [VoiceOps] SIP provider that will route to free conference services

[John Levine]

In article  
you write:
>We have a few customers who need to reach free conference call services and 
>none of our current carriers will route the calls.
>Are there any providers out there that will take these calls via SIP?  We are 
>happy to pay a fair price per minute if somebody
>will take it.

Works over Callcentric.

R's,
John
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Re: [VoiceOps] Local Rwandan DID for US company?

[John Levine]

In article 5d50f885-2846-4f5e-b1a5-f31b0402b...@nerdventures.com you write:
Howdy, folks,

A consulting client is traveling to Rwanda for business, and I'd like to 
provide him with a local number he
can call to reach me if need be.   I don't see any Rwandan DIDs at Twilio or 
VOIP.ms.  Any leads?

This page from MTN, the Rwandan mobile phone company, says that calls
to the US are 51 RwF/min, which is about 7c US, or you can get a pack
for 1200 Rwf ($1.65) which gives you 50 mins to the US, good for one day.

Local calls to Rwandan landline numbers are 46 RwF.  They will sell
you a basic phone for 9500 RwF ($13) or I presume you can get a SIM
for your 900/1800 GSM phone.

Doesn't seem much point to get a local number.

http://www.mtn.co.rw/Content/Pages/361/International_calling_rates

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