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North American Network Operators Group

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Routing to .US TLD servers

  • From: Sean Donelan
  • Date: Thu Nov 22 06:08:28 2001


If you (or your customers) have difficulties resolving domains
in the US zone, it was moved recently moved to a new set of
servers.  Nothing special, except they are all in 209 net
space, and are being announced as /24 network routes.  There
is no covering CIDR aggregate being announced, so providers
which still filter 209 CIDR blocks (i.e. an obsolete copy of
access-list 112) you may have difficulty reaching the new
servers.

 a.gtld.biz.         209.173.53.162
 b.gtld.biz.         209.173.57.162
 c.gtld.biz.         209.173.60.65

route-server>show ip bgp 209.173.48.0/20 longer
BGP table version is 502125, local router ID is 134.24.38.246
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 209.173.53.0     134.24.127.30           35             0 1740 7018 701 7786 i
*> 209.173.57.0     134.24.127.30           35             0 1740 7018 7786 i
*> 209.173.58.0     134.24.127.30           35             0 1740 7018 1 7473 9911 7786 ?
*> 209.173.60.0     134.24.127.30           35             0 1740 7018 209 7786 i

This is strictly a network routing issue, and has nothing to
do the merits of Neustar, ICANN or any other DNS issue.  If
you, and all your upstreams, accept /24's you shouldn't see
any problems.





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