Possible DNS Outage

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Dynamic

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#195310 15-Apr-2016 08:28

Client near the Auckland CBD has working Vodafone DSL but unable to access web sites. DNS on this site is using Vodafone's DNS servers. Change to Google DNS and browsing works. Change back to Voda and it doesn't. Back to Google and it does. Seems conclusive enough for me.

The DNS servers affected seem to be

ns1.ihug.co.nz [203.109.129.67]

ns2.ihug.co.nz [203.109.129.68]

They do ping just fine so they are not completely dead.

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams

sbiddle

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#1533395 15-Apr-2016 08:50

Does nslookup fail?

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#1533403 15-Apr-2016 09:01

I've moved on with quite a bit queued up.

Pinging google.co.nz or .com from a workstation or the server failed. Switching the DNS gave an immediate result. Switching it back and pinging aol.com or .co.uk failed,

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams

sbiddle

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#1533408 15-Apr-2016 09:08

Dynamic:

I've moved on. Pinging google.co.nz or .com from a workstation or the server failed. Switching the DNS gave an immediate result. Switching it back and pinging aol.com or .co.uk failed,

FYI pinging google.co.nz or google.com isn't a definitive way of testing for connectivity or DNS. As Google is served from a CDN network occasionally you'll find that on some ISPs it's not pingable. If you switch to Google DNS then google.co.nz or google.com will very likely be served from a different CDN so could therefore be pingable.