Discuss Any idea how to check or change the Edge DNS server? at the General - Hackint0sh.org; Unfortunately, it looks like my providers DNS server has gone belly up but they refuse ...
Any idea how to check or change the Edge DNS server?
Unfortunately, it looks like my providers DNS server has gone belly up but they refuse to acknowledge it (Unicel).
Edge data has worked fine on my iPhone for the last few weeks but stopped working this weekend. I find that I can manually type in an IP number for a server in Safari and it will work fine, but can't use any hostnames. Of course this also means that the non-safari apps on the phone are non-functional.
Does anyone know how to override the DNS servers on the phone for EDGE service? TNX.
mmm, i would like to use openDNS with this... may make my edge faster...
Same problem here (Unicel). I've been writing a much-too-wordy
description hoping I would solve the problem before having to post it.
Since this post is here, I'll go ahead and give my core dump.
I'm still trying to get higher up the tech-support chain, and I'll update when
I know anything.
Here's what I know:
Not getting DNS name resolution with edge connection
Before I go into gory detail, here's the quick summary for
you smart guys:
- I do not get DNS name resolution through edge.
- I don't know how to set my Edge DNS address.
- I don't know how to verify the Edge DNS servers written
to resolv.conf are valid name servers. (If they are, they're not public.)
- I have not been able to find instructions to flush the iPhone's DNS cache.
(Other posts mentioned this might help; the command for this is
"lookupd -flushcache" on a mac.)
- I am inexplicably able to get DNS resolution once in a while. I haven't
yet found any pattern in the successful URL or what I was
previously doing. It *could* be that when it works I'm hitting
entries in the DNS cache from previous WiFi hits.
- Everything is grand using WiFi.
- I've tried to do my homework before posting in the hopes
of preventing a noob-smackdown fest.
- I am on a non-ATT carrier (Unicel), with an iUnlocked 1.0.2 phone.
Connected through WiFi I get correct DNS resolution regardless
of whether I accept the default DNS address (my router address),
or enter valid public addresses in the WiFi settings. The DNS I choose
is written to /var/run/resolv.conf.
Connected through Edge, I get no name resolution. Entering a URL into
Safari gives "Safari can't open the page because it can't
find the server." iPhone local apps (maps, stocks, etc...)
respond with "Update failed".
The Edge network connection is fine. I can enter an IP address
in Safari (e.g. http://18.104.22.168 for google.com)
and the page is displayed. I can use ping and curl and even
ssh to my phone across the edge connection, as long I use the
My network provider is Unicel (also known as Rural Cellular, recently
bought by Verizon). When I am connected through edge, the contents of
I can ping these addresses from the iPhone when connected through
edge, but I don't know if they are valid name servers. (If they are,
they are not public because I cannot point to them with my WiFi
connection.) Unicel said they're not their addresses, though reverse
whois shows they own them:
>> whois for 22.214.171.124
>> MCI Communications Services, Inc. d/b/a Verizon Business UUNET63
>> (NET-63-64-0-0-1) 126.96.36.199 - 188.8.131.52
>> Rural Cellular UU-63-109-157
>> (NET-63-109-157-0-1) 184.108.40.206 - 220.127.116.11
Searching this forum and the internet I found similar problems.
Some people would couldn't get DNS resolution through WiFi were
helped by manually entering a public DNS into the WiFi settings,
but I don't know how to manually enter DNS for Edge. I tried
editing /var/run/resolv.conf with a valid public name server, but
this is overwritten when the phone is restarted. (And I saw now
effect without a restart.)
I changed my valid WiFi DNS to 127.0.0.1 and didn't lose my
name resolution, so I suspect you cannot change resolv.conf
on the fly.
Another post had a very similar problem as I
do and suggested the DNS cache needs to be cleared. I could not
find a command line method to clear the DNS cache on the iPhone,
but it was suggested that changing DNS settings will clear the
cache. In any case, I don't think its simply a dirty cache,
becuase I tried URL's I have never accessed through WiFi and
they still fail to resolve through Edge.
If you've read this far, thank you. This is all I know at the
moment. If you can offer any insight on the questions at the top
of the post, please do.
Last edited by abtf2; 10-15-2007 at 08:53 PM.
Great troubleshooting - tnx for that update. At the very least, misery loves company - I was very concerned I was alone in this and wouldn't have a chance to get it resolved.
I will call in again today too - i stopped by one of my local stores and they just shrugged that everything was working fine for them... they took one look at the iPhone and gave me an "it's not my problem" shrug.
Ditto for me this morning(Unicel, Upper Valley) in Vermont and NH this morning. Plus I'm on Unicel Plus at the moment and it still resolves to the same IP info as posted above.
Same Problem here on O2 Germany, IP works DNS not.
ps: do everyone use service.app? i use it and maybe here is the problem?!
Originally Posted by mitzekotze
I do also use service.app, but have used it for weeks with no problems at all in the past. DNS just stopped working on Friday 10/12 for some reason.
Mitze, I do not use service.app. Several of us without DNS on Unicel are waiting for a reply from their techs. They were able to confirm the problem on at least one phone they sell and support. I'll post updates to this thread:
Originally Posted by mitzekotze
Hopefully we will learn something that helps you too.
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