[kwlug-disc] DNS getting hinky?
cedric at thinkers.org
Thu Oct 22 20:56:01 EDT 2009
The 188.8.131.52 server stopped being reliable years ago, at least to my
experience. I thought they had actually turned recursion off on it?
Yes, it looks like they have... I just checked. See below for my dig
results - not the "recursion requested by not available" line, and
lack of returned A record for www.google.com.
If you are looking for an easy to remember replacement, I recommend
this AT&T box:
I have also had good experience with OpenDNS - 184.108.40.206 /
220.127.116.11 (and being a public resolver is their mission in
life). The only downside with them is that they, by default, resolve
failed queries to one of their servers, which is a deal breaker for
some folks (you can turn that off, but you have to have a static IP,
and create a profile for that IP on their site which asks for it to be
On the plus side, if you need an ultra-light weight pr0n filter for a
site, then you can create a profile with them, and ask them not to
resolve such name requests from your IP (you have to trust the quality
of their database, again -- it's free and basic, so if you want to
quibble, then you need something more sophisticated/different anyway).
$ dig www.google.com @18.104.22.168 A
; <<>> DiG 9.6.0-APPLE-P2 <<>> www.google.com @22.214.171.124 A
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38649
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 4
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;www.google.com. IN A
;; AUTHORITY SECTION:
GOOGLE.com. 7812 IN NS ns4.GOOGLE.com.
GOOGLE.com. 7812 IN NS ns1.GOOGLE.com.
GOOGLE.com. 7812 IN NS ns2.GOOGLE.com.
GOOGLE.com. 7812 IN NS ns3.GOOGLE.com.
;; ADDITIONAL SECTION:
ns4.GOOGLE.com. 142519 IN A 126.96.36.199
ns1.GOOGLE.com. 142234 IN A 188.8.131.52
ns2.GOOGLE.com. 150434 IN A 184.108.40.206
ns3.GOOGLE.com. 150434 IN A 220.127.116.11
;; Query time: 43 msec
;; SERVER: 18.104.22.168#53(22.214.171.124)
;; WHEN: Thu Oct 22 20:52:48 2009
;; MSG SIZE rcvd: 178
On 2009-10-22, at 7:52 PM, Rashkae wrote:
> unsolicited wrote:
>> Anyone else experiencing intermittent DNS wonkiness?
>> When one moment wikipedia resolves, and a minute later not, it's
>> irritating. Same on google. To pick a couple.
>> I even went and changed my DNS on one machine to uunet only
>> (126.96.36.199), to no change.
>> [At one point, I had the sense that people felt uunet had gone
>> / gotten slower, but that feeling reversed itself last year some
>> It seems. Am I remembering correctly?]
>> There has been list discussions in the past regarding their
>> preferred /
>> favourite DNS servers, but I didn't have a real solid sense of a
> Generally speaking, I've rarely been impressed with ISP DNS. If you
> have an always on High speed connection, do it yourself is the only
> to go.
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