DNS Servers down?

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33 posts

Geek

Reply # 760162 12-Feb-2013 15:13
TelstraClear: Hi all. We're looking into these reports now. Once I know more I'll update you. Cheers, Gary Might want to note that the 0508 888 800 number is down also, just an engaged signal compared to other numbers which work.

sleemanj

900 posts

Ultimate Geek

Reply # 760165 12-Feb-2013 15:15
DNS is back up now dig +short www.google.com @203.97.78.44 203.97.30.177 203.97.30.181 203.97.30.185 203.97.30.187 203.97.30.144 203.97.30.148 203.97.30.152 203.97.30.154 203.97.30.155 203.97.30.159 203.97.30.163 203.97.30.165 203.97.30.166 203.97.30.170 203.97.30.174 203.97.30.176 --- James Sleeman My hobby - listing small amounts of interesting/useful hobby electronic components hardware and stuff on Trademe for cheap, all good geek stuff for the "maker" revolution ;-) Tip for Trademe addicts: install an addon for your browser to get thumbs for all listings.

StevieT

271 posts

Ultimate Geek

Reply # 760166 12-Feb-2013 15:15
Silverwolf: TelstraClear: Hi all. We're looking into these reports now. Once I know more I'll update you. Cheers, Gary Might want to note that the 0508 888 800 number is down also, just an engaged signal compared to other numbers which work. Yes. I noticed that an hour ago. However just got through, and Internet is back up and running. I wasn't aware if it was a DNS thing, so naturally didn't change my DNS servers so I could access the web.

jermsie

297 posts

Ultimate Geek

Reply # 760171 12-Feb-2013 15:22
TelstraClear still havent got the memo about the benefits of Twitter for these types of things... – J

TelstraClear

566 posts

Ultimate Geek

Trusted

TelstraClear

Reply # 760172 12-Feb-2013 15:22
Thanks all for your patience. All should be back to normal now and the phones are back to normal too (we had a few calls!). Cheers, Gary

StevieT

271 posts

Ultimate Geek

Reply # 760181 12-Feb-2013 15:23
jermsie: TelstraClear still havent got the memo about the benefits of Twitter for these types of things... I doubt that twitter would be helpful, if you cannot access any webpage.

jermsie

297 posts

Ultimate Geek

Reply # 760185 12-Feb-2013 15:29
StevieT: jermsie: TelstraClear still havent got the memo about the benefits of Twitter for these types of things... I doubt that twitter would be helpful, if you cannot access any webpage. Many people have smartphones and Twitter is a first port of call. – J

r2b2

144 posts

Master Geek

Reply # 760187 12-Feb-2013 15:29
Sorry have to laugh: 15:22 - Gary tells Geekzone everything should be fine (as it is) 15:23 - "CH" tells Twitter "Hi Guys, Techs are looking into the DNS server issues right now - will post updates as they come through" I suppose at least there was finally a Twitter update :)

r2b2

144 posts

Master Geek

Reply # 760189 12-Feb-2013 15:31
TelstraClear: Thanks all for your patience. All should be back to normal now and the phones are back to normal too (we had a few calls!). Cheers, Gary Thanks Gary - any information on the cause? Although you're perhaps not allowed to provide that info? (Nice thing about when you are hosting servers with good hosting companies is they provide you detailed-ish info on what caused outages... wish ISPs could be the same open and honest) Now back to watch my Tbox that I started on a system check @ 12.30 (yes, 3 hours ago) and its only up to 62%...

cws82us

663 posts

Ultimate Geek

Reply # 760193 12-Feb-2013 15:32
Just seen this one facebook

jermsie

297 posts

Ultimate Geek

Reply # 760220 12-Feb-2013 15:50
r2b2: TelstraClear: Thanks all for your patience. All should be back to normal now and the phones are back to normal too (we had a few calls!). Cheers, Gary Thanks Gary - any information on the cause? Although you're perhaps not allowed to provide that info? (Nice thing about when you are hosting servers with good hosting companies is they provide you detailed-ish info on what caused outages... wish ISPs could be the same open and honest) Now back to watch my Tbox that I started on a system check @ 12.30 (yes, 3 hours ago) and its only up to 62%... What I've noticed from other companies that embrace transparency is greater loyalty and respect. Goes a long way. – J

mercutio

783 posts

Ultimate Geek

Reply # 760263 12-Feb-2013 16:44
sleemanj: PS: So much for redundancy. Isn't that the point of having TWO dns servers (43/44). you shouldn't use two dns servers on the same subnet.

exportgoldman

1200 posts

Uber Geek

Trusted

Reply # 760278 12-Feb-2013 17:02
Interesting as I had this problem at a client today which was on Paradise which Clear brought a long time ago, which of course clear was then purchased by TelstraClear. Paradise DNS 203.96.152.4 203.96.152.12 Clear DNS 203.97.33.1 203.97.37.1 - Good Different subnet TelstraClear DNS 203.97.78.43 203.97.78.44 As you can see Clear.net had it sussed, different subnets. Both Paradise and TelstraClear same subnet. I know the clear.net off by heart as I've been pinging it for years on occasion as it's my test ping ip :-) I sometimes think with great happiness of the admins of 203.97.33.1... Tyler - Parnell Geek - iPhone 3G - Lenovo X301 - Kaseya - Great Western Steak House, these are some of my favourite things.

mercutio

783 posts

Ultimate Geek

Reply # 760287 12-Feb-2013 17:12
exportgoldman: Interesting as I had this problem at a client today which was on Paradise which Clear brought a long time ago, which of course clear was then purchased by TelstraClear. Paradise DNS 203.96.152.4 203.96.152.12 Clear DNS 203.97.33.1 203.97.37.1 - Good Different subnet TelstraClear DNS 203.97.78.43 203.97.78.44 As you can see Clear.net had it sussed, different subnets. Both Paradise and TelstraClear same subnet. I know the clear.net off by heart as I've been pinging it for years on occasion as it's my test ping ip :-) I sometimes think with great happiness of the admins of 203.97.33.1... it is a simplification, and doesn't always hold true especially in internal networks, but it's a general rule of thumb. basically - you should have two paths to the DNS servers, so they both don't go out at once, and generally be in separate locations if possible. that said, whenever primary dns server goes down performance drops sharply. and your primary dns should never go down. but it it does, it is handy to have a backup. i generally consider 3 dns servers to be sensible. but, if the isp isn't providing a second good backup there are a few options. 8.8.8.8, 4.2.2.2, and telstra australia's dns all happen to work.

LennonNZ

Just A Geek
1582 posts

Uber Geek

Trusted

Subscriber

Reply # 760300 12-Feb-2013 17:38
203.97.78.43 203.97.78.44 could be on completely different machines/subnets. These days a lot of ISP's Anycast their DNS Servers so you have (as a /32) in say Auckland, Wellington, Christchurch the same IP Address. This means 203.97.78.43/32 is a completely different subnet as 203.97.78.44/32. I'm not saying TelstraClear do it this way but quite a few do.

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