Error querying a.gtld.biz.

[Chris Buxton]

The reason for this is that the gtld.biz servers are authoritative  
for us, which contains a referral for state.la.us. Your zone is a  
subzone of that, i.e. a grandchild of the .us zone, and thus  
a.gtld.biz has no reason to know your zone's delegation records.

If you continue the query one more step, you'll see a referral from  
state.la.us to your zone, dss.state.la.us.

A quicker way to find this, instead of using nslookup, is 'dig +trace':
________________________________________

$ dig +trace dss.state.la.us ns

; <<>> DiG 9.4.1-P1 <<>> +trace dss.state.la.us ns
;; global options:  printcmd
.                       334614  IN      NS      H.ROOT-SERVERS.NET.
.                       334614  IN      NS      I.ROOT-SERVERS.NET.
.                       334614  IN      NS      J.ROOT-SERVERS.NET.
.                       334614  IN      NS      K.ROOT-SERVERS.NET.
.                       334614  IN      NS      L.ROOT-SERVERS.NET.
.                       334614  IN      NS      M.ROOT-SERVERS.NET.
.                       334614  IN      NS      A.ROOT-SERVERS.NET.
.                       334614  IN      NS      B.ROOT-SERVERS.NET.
.                       334614  IN      NS      C.ROOT-SERVERS.NET.
.                       334614  IN      NS      D.ROOT-SERVERS.NET.
.                       334614  IN      NS      E.ROOT-SERVERS.NET.
.                       334614  IN      NS      F.ROOT-SERVERS.NET.
.                       334614  IN      NS      G.ROOT-SERVERS.NET.
;; Received 436 bytes from 192.168.1.1#53(192.168.1.1) in 48 ms

us.                     172800  IN      NS      C.GTLD.BIZ.
us.                     172800  IN      NS      I.GTLD.BIZ.
us.                     172800  IN      NS      B.GTLD.BIZ.
us.                     172800  IN      NS      A.GTLD.BIZ.
us.                     172800  IN      NS      K.GTLD.BIZ.
us.                     172800  IN      NS      J.GTLD.BIZ.
;; Received 301 bytes from 192.203.230.10#53(E.ROOT-SERVERS.NET) in  
18 ms

state.la.us.            7200    IN      NS      OTC-DNS1.LSU.EDU.
state.la.us.            7200    IN      NS      SERVER.NOC.LA.NET.
;; Received 94 bytes from 209.173.53.162#53(A.GTLD.BIZ) in 96 ms

dss.state.la.us.        86400   IN      NS      dssns2.dss.state.la.us.
dss.state.la.us.        86400   IN      NS      dssns.dss.state.la.us.
;; Received 106 bytes from 130.39.3.5#53(OTC-DNS1.LSU.EDU) in 87 ms

dss.state.la.us.        3600    IN      NS      dssns.dss.state.la.us.
dss.state.la.us.        3600    IN      NS      dssns2.dss.state.la.us.
;; Received 106 bytes from 199.248.209.35#53(dssns2.dss.state.la.us)  
in 72 ms
________________________________________

Chris Buxton
Men & Mice

On Sep 12, 2007, at 11:34 AM, Ryan McCain wrote:

> Im going through the O'Reilly BIND book and on pp79-80 it discusses  
> querying your parents servers.  If you see my results below, the  
> TLD DNS (no sure if thats the right terminology) have no idea of  
> our domain. I am under the impression that the state.la.us  
> nameservers don't have our NS's registered.  Is that correct?  If  
> so, does this really matter?
>
> Sorry for the newbie questions.. I can assure you I'm reading and  
> googling trying to figure this out on my own before wasting you  
> guys time.
>
> ----
>
> dss-dr93la06:~ # nslookup -type=ns us.
> Server:         172.20.11.238
> Address:        172.20.11.238#53
>
> Non-authoritative answer:
> us      nameserver = a.gtld.biz.
> us      nameserver = b.gtld.biz.
> us      nameserver = c.gtld.biz.
> us      nameserver = i.gtld.biz.
> us      nameserver = j.gtld.biz.
> us      nameserver = k.gtld.biz.
>
> Authoritative answers can be found from:
> a.gtld.biz      internet address = 209.173.53.162
> b.gtld.biz      internet address = 209.173.57.162
> c.gtld.biz      internet address = 209.173.60.65
> i.gtld.biz      internet address = 156.154.96.126
> k.gtld.biz      internet address = 156.154.72.65
>
> dss-dr93la06:~ # nslookup -type=ns -norecurse dss.state.la.us.  
> a.gtld.biz.
> Server:         a.gtld.biz.
> Address:        209.173.53.162#53
>
> Non-authoritative answer:
> *** Can't find dss.state.la.us.: No answer     
> <***********************-----
>
> Authoritative answers can be found from:
> state.la.us     nameserver = SERVER.NOC.LA.NET.
> state.la.us     nameserver = OTC-DNS1.LSU.EDU.
>
> dss-dr93la06:~ #
>
>