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INEX operates an AS112 server. This system provides anycast reverse DNS lookup for several prefixes, namely:
Because these IP addresses are widely used for private networking, many end-user systems are configured to perform reverse DNS lookups for these address ranges. DNS lookups for these ranges should always be null-answered quickly, in order to make sure that DNS retransmits don't occur (thereby overloading local DNS resolvers), and to prevent end-user systems from hanging due to DNS lookups.
AS112 services are provided around the world by a group of volunteers.
Connectivity to this service is available to all INEX members at no charge. To avail of this service, please contact INEX operations, and we will set up a BGP peering session on the INEX AS112 server. INEX's details are:
Technical contact, NOC and emergency phone numbers are the same as for the INEX route collector, and are available on www.inex.ie/members/support.
INEX operates its AS112 instance on a Dell Poweredge SC1425, running BIND 9 on FreeBSD 7.0. Statistics are produced using DSC.