[AusNOG] High number of inbound automated Chinese language calls on AAPT CTS

Fri Oct 27 16:19:37 EST 2017

I havent seen anything specific come through on our AAPT CTS service today, however I'll keep an eye out.

I did just get a random call through on a new SfB hunt group that's being configured, however that appeared to be a Sydney CLI, rather than a random one.

Michael

________________________________
From: AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of Matt Perkins <matt at spectrum.com.au>
Sent: Friday, 27 October 2017 15:33
To: jay binks; AusNOG at lists.ausnog.net
Subject: Re: [AusNOG] High number of inbound automated Chinese language calls on AAPT CTS

Hi Jay,
 Unwelcome Communications procedure only work when you have the source numbers. It's hard to give the CTS provider ~10,000 source numbers ;) They are trying however to chase it up.  No it's not coming from a sip gateway. This equipment is not on the internet.

Matt.

On 27/10/17 3:22 pm, jay binks wrote:
There are methods for dealing with unwelcome or nuisance calls.
It's not always effective, but its worth a try.

If your calls fit the definition of an "UNWELCOME COMMUNICATIONS" you may be able to utilise http://www.commsalliance.com.au/Documents/all/codes/c525.

The OP may have a claim to this with 3000 calls within 4 hours.
Contact your CSP.  "C/CSPs must assist end users in receipt of unwelcome messages where it is reasonably possible to do so "

They may only pass the complaint on to the originating carrier, but you might get lucky.

The other thing I initially thought of when I saw this ( but it seems like its probably not the case after reading other peoples accounts ).
Make sure your SIP equipment only accepts SIP from your SIP provider. Sometimes you find people scanning your network, doing this sort of thing.

Good luck !

Jay

On 27 October 2017 at 14:12, Matt Perkins <matt at spectrum.com.au<mailto:matt at spectrum.com.au>> wrote:
The volumes we are getting are stunning if it's not targeted at AAPT.  as it appears it's not from some of the on/off list responses. We have had over 3000 calls in the last 4 hours. This has been going on for almost 4 days.

Matt.

On 27/10/17 2:51 pm, Tom.Minchin at csiro.au<mailto:Tom.Minchin at csiro.au> wrote:
We are getting runs of these to a Sydney and a Melbourne site. We are Telstra inbound.

On Fri, Oct 27, 2017 at 1:55 PM +1100, "Andrew Yager" <andrew at rwts.com.au<mailto:andrew at rwts.com.au>> wrote:

Hi Matt,

We have seen multiple instances of this over the last couple of months to different number blocks.

It's usually a Mandarin message claiming to be from the ATO.

Have logged a few complaints on a few of them; have not got anywhere useful because each number is called "once" and doesn't meet the threshold for a nuisance claim.

If any of my upstreams want to care though… I'm happy to provide more details… :) (nudge… nudge…)

Andrew

On 27 October 2017 at 13:34, Matt Perkins <matt at spectrum.com.au<mailto:matt at spectrum.com.au>> wrote:
Here's some Friday fun.

Are there any people with AAPT CTS that are receiving very high volumes (500 an hour)  of a Chinese language automated message. Numbers dialed in appear to be random within a routed ranges they also appear to be using random calling id's some start with 028009XX. Im told that the message says it's from the Chinese consulate and ask you to push zero.  I suspect they are trying to determine which numbers have Chinese language speakers answer for some later scam. But only appears to be on AAPT CTS. We have CTS with a few other carriers and seeing nothing on those inbound.

Interested to see if others are receiving same.

Matt.

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Jay

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