Robert Brockway wrote:
> On Thu, 11 May 2006, Charles MacDonald wrote:
>
>> My wife has been using linux and presented me with a stange problem.
>>
>> She has been trying to get some infomation from www,ishares.com
>> and has not been able to raise the site. a check with "Host" says
>> it deos not exist.
>>
>>> cmacd@linux:~> host ishares.com
>>> ishares.com has address 65.205.205.213
>>> ishares.com mail is handled by 10 mail-rc-04.barclaysglobal.com.
>>> ishares.com mail is handled by 10 mail-rc-05.barclaysglobal.com.
>>> ishares.com mail is handled by 10 mail-sf-04.barclaysglobal.com.
>>> cmacd@linux:~> host www.ishares.com
>>> Host www.ishares.com not found: 3(NXDOMAIN)
>>> cmacd@linux:~>
>
> Hi Charles. What version of 'host' are you using? The output above is
> not that I'd expect from a vanilla host command. Do you have aliases set?
>
> You may wish to consider using 'dig' too.
>
> The domain looks fine to me. The SOA TTL is arguably too short.
>
> Notice I query authoritative servers below.
>
> $host -t ns ishares.com
> ishares.com NS ns2.barclaysglobal.com
> ishares.com NS ns1.barclaysglobal.com
>
> $host www.ishares.com
> www.ishares.com A 65.205.205.213
>
> $host www.ishares.com ns2.barclaysglobal.com
> www.ishares.com A 65.205.205.213
>
> $host www.ishares.com ns1.barclaysglobal.com
> www.ishares.com A 65.205.205.213
>
> $host ishares.com ns1.barclaysglobal.com
> ishares.com A 65.205.205.213
>
> $host -t soa ishares.com ns1.barclaysglobal.com
> ishares.com SOA dns-sf-03.barclaysglobal.com
> hostmaster.ishares.com (
> 2006042718 ;serial (version)
> 7200 ;refresh period (2 hours)
> 3600 ;retry interval (1 hour)
> 2419200 ;expire time (4 weeks)
> 300 ;default ttl (5 minutes)
> )
>
HI, I am not sure of the version...It is the one that comes with SUSE 10.
I just tried twice in a row, using -v for verbose and got an answer once!
cmacd@linux:/> host -v www.ishares.com
Trying "www.ishares.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60552
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1
;; QUESTION SECTION:
;www.ishares.com. IN A
;; ANSWER SECTION:
www.ishares.com. 30 IN A 65.205.205.213
;; AUTHORITY SECTION:
ishares.com. 171696 IN NS ns2.barclaysglobal.com.
ishares.com. 171696 IN NS ns1.barclaysglobal.com.
;; ADDITIONAL SECTION:
ns1.barclaysglobal.com. 1661 IN A 65.205.204.167
Received 116 bytes from 72.1.192.22#53 in 292 ms
Trying "www.ishares.com"
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 72.1.192.22#53 in 278 ms
Trying "www.ishares.com"
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 72.1.192.22#53 in 199 ms
cmacd@linux:/> host -v www.ishares.com
Trying "www.ishares.com"
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 72.1.192.22#53 in 195 ms
cmacd@linux:/>
Trying to give it one of the specified nameservers gets me..
cmacd@linux:/> host -v www.ishares.com ns2.barclaysglobal.com
Trying "www.ishares.com"
Using domain server:
Name: ns2.barclaysglobal.com
Address: 65.205.205.167#53
Aliases:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61744
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.ishares.com. IN A
;; ANSWER SECTION:
www.ishares.com. 30 IN A 65.205.205.213
Received 49 bytes from 65.205.205.167#53 in 265 ms
Trying "www.ishares.com"
Using domain server:
Name: ns2.barclaysglobal.com
Address: 65.205.205.167#53
Aliases:
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 65.205.205.167#53 in 270 ms
Trying "www.ishares.com"
Using domain server:
Name: ns2.barclaysglobal.com
Address: 65.205.205.167#53
Aliases:
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 65.205.205.167#53 in 265 ms
cmacd@linux:/>
Trying the other one gives
cmacd@linux:/> host -v www.ishares.com ns1.barclaysglobal.com
Trying "www.ishares.com"
Using domain server:
Name: ns1.barclaysglobal.com
Address: 65.205.204.167#53
Aliases:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58565
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.ishares.com. IN A
;; ANSWER SECTION:
www.ishares.com. 30 IN A 65.205.205.213
Received 49 bytes from 65.205.204.167#53 in 283 ms
Trying "www.ishares.com"
Using domain server:
Name: ns1.barclaysglobal.com
Address: 65.205.204.167#53
Aliases:
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 65.205.204.167#53 in 298 ms
Trying "www.ishares.com"
Using domain server:
Name: ns1.barclaysglobal.com
Address: 65.205.204.167#53
Aliases:
Host www.ishares.com not found: 3(NXDOMAIN)
Received 105 bytes from 65.205.204.167#53 in 299 ms
cmacd@linux:/>
Note that Mozilla, which we both use as a browser tries to do a get host
by name every time it goes to load a page...
even trying the name server by IP (in case the problem is looking up the
name server! gives a half-and half result.
--
Charles MacDonald Stittsville Ontario
cmacd [ at ] TelecomOttawa [ dot ] net Just Beyond the Fringe
http://www.TelecomOttawa.net/~cmacd/
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