Vodafone DNS to be blocked to out of network users

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freitasm

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#148697 27-Jun-2014 23:31

Just saw in the NZNOG list:

Vodafone New Zealand will start blocking external access to the recursive DNS servers of the former TelstraClear network to non-customers as of July 3rd 2014.

Some of our former customers or other users with Vodafone modems may have the IP addresses of our DNS servers set up on their devices. With that in mind, we'd like to notify you that from midnight 01 July 2014 we will stop providing DNS resolution for external non-Vodafone users, resulting in such customers being unable to browse the internet.

The affected DNS servers are at the following IP addresses:

203.97.33.14
203.97.37.14
203.97.78.43
203.97.78.44

Vodafone is not the first ISP to do this (Orcon is another recent one).

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solaybro

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#1075847 27-Jun-2014 23:40

Not even people on the TCL network want to use the TCL dns, including you Freitasm. There will be no one left using it.

freitasm

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#1075850 27-Jun-2014 23:42

solaybro: Not even people on the TCL network want to use the TCL dns, including you Freitasm. There will be no one left using it.

Good point. And valid. No word from Vodafone on their DNS problems - and it continues now for more than two weeks.

Unless they are moving to block external access because they found out the servers are overwhelmed with external requests...

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insane

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#1075865 28-Jun-2014 00:58

freitasm:
solaybro: Not even people on the TCL network want to use the TCL dns, including you Freitasm. There will be no one left using it.

Good point. And valid. No word from Vodafone on their DNS problems - and it continues now for more than two weeks.

Unless they are moving to block external access because they found out the servers are overwhelmed with external requests...

I'm surprised they didn't do this sooner really, there's no real reason for any ISP to allow recursion for off-net users.

Hammerer

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#1075866 28-Jun-2014 01:04

It seems to be the thing to do competitively because it prevents customers of smaller ISPs 'freeloading' on a larger ISP. But it's always been a useful public service to have the option of using another ISPs DNS servers rather than being limited to public DNS servers overseas.

In the distant past, when TCL DNS servers had a spate of problems I could simply switch to Telecom's. But Telecom also stopped that a couple of years ago.

Aredwood

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#1076328 29-Jun-2014 00:33

Thanks for posting this. One of my friends is using a Vodafone branded router on Snap internet. I will tell him to check his DNS settings.

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#1076340 29-Jun-2014 01:30

Aredwood: Thanks for posting this. One of my friends is using a Vodafone branded router on Snap internet. I will tell him to check his DNS settings.

They all get their DNS from the data PVC but not too sure about the Station.

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sbiddle

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#1076434 29-Jun-2014 11:29

insane:
freitasm:
solaybro: Not even people on the TCL network want to use the TCL dns, including you Freitasm. There will be no one left using it.

Good point. And valid. No word from Vodafone on their DNS problems - and it continues now for more than two weeks.

Unless they are moving to block external access because they found out the servers are overwhelmed with external requests...

I'm surprised they didn't do this sooner really, there's no real reason for any ISP to allow recursion for off-net users.

There is no technical reason to allow it but many ISPs do so purely because there are so many people out there using incorrect DNS that it risks breaking connections.

insane

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#1076468 29-Jun-2014 12:11

it might be convenient for a leaving customer, but may cause poor performance.. You hardly want your past customers to be directed back to your Google, Akamai caches etc.

richms

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#1076520 29-Jun-2014 13:48

If you could use this to start marketing to these customers surely that would be a better option then to just turn it off?

Richard rich.ms