how to check how many domains hosted by some ISP's DNS servers?

[Mathias Körber]

Peter,

unless I'm missing something, dlint cannot magically extract
the list of zones a given server hosts (which is what
Chris seems to want).
It is a zone checking tool, one has to know the zone first.

NSI allows
	whois -h whois.networksolutions.com "server !serverhandle"
but that
	a) only finds domains registered with NSI, not any other
		zone (reverse, subdomains, domains of other
		registrars
	b) stops at 50 lines :-(

I know of no (better) tool to do that short of asking the admins..

Back to dlint:
I also find dlint a bit too picky with multiple names for the
same A record:

Here an example from one of my zones (koerber.org):

ERROR: "lists.koerber.org. A 203.127.219.241", but the PTR record for =
241.219.127.203.in-addr.arpa. is "matjes.koerber.org."
 One of the above two records are wrong unless the host is a name server =
or mail server.
 To have 2 names for 1 address on any other hosts, replace the A record
 with a CNAME record:
 lists.koerber.org. IN CNAME matjes.koerber.org.

Hmm. but lists.koerber.org is used as a target for an MX,
so using a CNAME here would atually be wrong. There is nothing *wrong* =
with
having multiple names point to the same IP address. This should at best
be a warning...

regards

> -----Original Message-----
> From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
> Behalf Of Peter Rose
> Sent: Tuesday, January 23, 2001 16:02
> To: Chris
> Cc: comp-protocols-dns-bind at moderators.isc.org
> Subject: Re: how to check how many domains hosted by some ISP's DNS
> servers?
>=20
>=20
>=20
> Chris -=20
>=20
> have a look at
>=20
> http://www.domtools.com/dlint/
>=20
> You can check zones from the web interface or - probably better -
> download and install the dlint utility on your own machine for better
> performance.
>=20
> HTH
>=20
> Peter Rose
> London UK
>=20
>=20
>=20
>=20
> In message <94irqc$dnr$1 at news.hk.linkage.net>, Chris =
<chris at hkseek.com>
> writes
> >
> >Anyone know which command or tools can be used to check how many=20
> domain are
> >hosted by a ISP's DNS servers? and which domains?
> >
> >for example i want to compare the number of domains hosted by=20
> the following
> >web hosting companies:
> >
> >1. iCOM.COM
> >
> >   NS1.ICOM.COM                        192.41.1.25
> >   NS2.ICOM.COM                        161.58.9.25
> >
> >
> >2. Superb.Net
> >
> >   NS1.SUPERB.NET                                    207.228.225.5
> >   NS2.SUPERB.NET                                    66.38.135.5
> >
> >
> >--
> >
> >----
> >  Chris Chan
> >
> >
> >
> >
> >
>=20
> Cyberscreen Internet Services.
> 25, Oak Hill,
> Woodford Green,
> Essex IG8 9NS
> UK
>=20
> Tel/Fax: +44 (0)208 504 6316
> Mobile: +44 (0)7771 987452
> www.cyberscreen.com
>=20
>=20