TS1398 How do you rectify "DNS lookup failed" on an iPad?

I cannot access certain web sites and get the above message. I have managed to find instructions on how to fix the problem for a Windows based PC but not an iPad.
Can anyone help? I am not technically minded. We have a BT home hub wireless router.

Hi makc1!
Here is an article for you that talks about DNS settings and can help you troubleshoot this issue:
Non-responsive DNS server or invalid DNS configuration can cause long delay before webpages load
http://support.apple.com/kb/ts2296
Thanks for coming to the Apple Support Communities!
Cheers,
Braden

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I've had Verizon Fios for over a year and had no problems connecting wirelessly to my MacBook. Out of the blue today, both my MacBook and my brother's began to have issues accessing the internet. Every attempt would yield the same response:
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The server at google.com can't be found, because the DNS lookup failed. DNS is the web service that translates a website's name to its Internet address. This error is most often caused by having no connection to the Internet or a misconfigured network. It can also be caused by an unresponsive DNS server or a firewall preventing Google Chrome from accessing the network.
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Reload this web page later.
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Error 105 (net::ERR_NAME_NOT_RESOLVED): Unable to resolve the server's DNS address.
I called Verizon for support, and while their reset of my internet has allowed me to connect directly from a ethernet cord from my router, I'm still getting the same result on any attempts to connect via wi-fi. Since Verizon decided it was a Mac issue and not a Verizon issue at this point, they pointed me in the direction of applecare, but I don't have the money to spend right now on a support call.
It seems that the router is connecting to the internet, and I can connect through ethernet, but their is a problem with the wireless communication between my computer and the router. Any suggestions?

That is a different issue. Most likely, your university IT has misconfigured their network and only tested it on Windows where little details like TCP/IP subnets aren't even checked. This sounds pretty typical for university IT. Unfortunately, you will have zero luck getting them to fix the problem because they don't support MACS.
First of all, your question is pretty important and shouldn't be tucked inside a Verizon FiOS thread where no one will see it. I suggest starting a new question so that people looking for this topic in the future can find the answer.
I am familiar with this problem. It is an IT configuration problem. I just rolled my own hack for it. I should probably try to improve my hack since obviously other people are experiencing the same problem.
Before I get started. Why are you even looking? What is the exact problem that you are having? My problem was specific to VPNs but your issue seems even more basic than that. What, exactly, does or does not happen to cause you to search for a fix?
In the Terminal, run the command "scutil list". How many DNS entries are listed? What are they? You should have one that says "State:/Network/Global/DNS". Type "show State:/Network/Global/DNS". What does it return? Are these the DNS servers that you added?
Let me know the respones to the above and then I can craft a command that will correct and possibly override those servers properly.

Post Moved DNS-Lookup-Failed

Post Moved http://community.bt.com/t5/Other-BB-Queries/DNS-Lookup-Failed/td-p/611636
If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

Is Safari the same?

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hi,
When i try to download a file from let say xyz.com i am not able to do so.Policy trace show below result
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User Name: r5893
Group Membership: NBKDOM\r5893, NBKDOM\Limit_Login_Single, NBKDOM\MMS_Access Group, NBKDOM\Screen Saver, NBKDOM\Domain Users, NBKDOM\MMSGroup, NBKDOM\Purchasing&GS-Kuwait, NBKDOM\AllUsers, NBKDOM\Outlook Users, NBKDOM\Administration-Kuwai, NBKDOM\BOUsers, NBKDOM\MYNBKUSERS, NBKDOM\Purchasing Requests - Administration, NBKDOM\EVGROUP001
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Decryption policy: None
Routing policy: Global Routing Policy
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Hi Asim,
I would investigate the DNS by establishing an SSH session to the M1 interface. Do an 'nslookup xyz.com' and see if it resolves. If it does not resolve, you may want to check your DNS server.
-Vance

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Hello,
I've been having an issue with my internet connection, which has been getting a lot worse over the past 1 month. I purchased the WRT120N about a year and a half ago, and occasionally observed dropped connections, but it was no big deal. Over teh past month or so, however, it seems like I get the "DNS lookup failed" error about every 15-30 minutes. Every time, I have to disconnect and reconnect my computer to my router. In addition, I will be disconnected from XBox Live. This problem may occur every 5 minutes or every few hours.
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TS1398 How do you rectify "DNS lookup failed" on an iPad?

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