North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: .mil domain root only hosted by one server??
On Wed, Aug 21, 2002 at 03:46:22PM -0400, Vinny Abello wrote: > I just stumbled across something I thought was interesting. All the .mil > domain names used by the U.S. Military are served by one single root > server. [[email protected]]% for n in a b c d e f g h i j k l m; do for> dig @${n}.root-servers.net ns mil. | egrep -qi '^mil.*NS' && \ for cmdand> echo "${n}.root-servers.net provides a delegation for MIL." for> done a.root-servers.net provides a delegation for MIL. b.root-servers.net provides a delegation for MIL. c.root-servers.net provides a delegation for MIL. d.root-servers.net provides a delegation for MIL. e.root-servers.net provides a delegation for MIL. f.root-servers.net provides a delegation for MIL. g.root-servers.net provides a delegation for MIL. h.root-servers.net provides a delegation for MIL. i.root-servers.net provides a delegation for MIL. j.root-servers.net provides a delegation for MIL. k.root-servers.net provides a delegation for MIL. l.root-servers.net provides a delegation for MIL. m.root-servers.net provides a delegation for MIL. [[email protected]]% dig ns mil. ; <<>> DiG 8.3 <<>> ns mil. ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2 ;; flags: qr rd ra; QUERY: 1, ANSWER: 11, AUTHORITY: 0, ADDITIONAL: 5 ;; QUERY SECTION: ;; mil, type = NS, class = IN ;; ANSWER SECTION: mil. 23h59m24s IN NS PAC2.NIPR.mil. mil. 23h59m24s IN NS A.ROOT-SERVERS.NET. mil. 23h59m24s IN NS B.ROOT-SERVERS.NET. mil. 23h59m24s IN NS E.ROOT-SERVERS.NET. mil. 23h59m24s IN NS G.ROOT-SERVERS.NET. mil. 23h59m24s IN NS H.ROOT-SERVERS.NET. mil. 23h59m24s IN NS CON1.NIPR.mil. mil. 23h59m24s IN NS CON2.NIPR.mil. mil. 23h59m24s IN NS EUR1.NIPR.mil. mil. 23h59m24s IN NS EUR2.NIPR.mil. mil. 23h59m24s IN NS PAC1.NIPR.mil. ;; ADDITIONAL SECTION: A.ROOT-SERVERS.NET. 6d23h59m20s IN A 198.41.0.4 B.ROOT-SERVERS.NET. 6d23h59m20s IN A 128.9.0.107 E.ROOT-SERVERS.NET. 6d23h59m21s IN A 192.203.230.10 G.ROOT-SERVERS.NET. 6d23h59m22s IN A 192.112.36.4 H.ROOT-SERVERS.NET. 6d23h59m22s IN A 128.63.2.53 ;; Total query time: 93 msec ;; FROM: peppermill.automagic.org to SERVER: default -- 204.152.184.68 ;; WHEN: Wed Aug 21 12:56:09 2002 ;; MSG SIZE sent: 21 rcvd: 316 [[email protected]]% > I thought that was a bit odd. I'm sure that one server is more than > enough to handle the queries for all the .mil domains with no problem, but > it doesn't seem very redundant or safe at all. All thirteen root servers contain delegations for MIL, and there are eleven servers which will provide an authoritative response to a query for SOA (of which five are also root servers). Joe
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