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February-March 2002
slideset 7 -19
RFC2317 explained (1)
n192.0.2.0/25   to organization A,
n192.0.2.128/26 to organization B and
n 192.0.2.192/26 to organization C
n
n
 $ORIGIN 2.0.192.in-addr.arpa.
   ;
   1      PTR     host1.organizationA.com.
   2      PTR     host2.organizationA.com.
   3      PTR     host3.organizationA.com.
   ;
   129    PTR     host1.organizationB.com.
   130    PTR     host2.organizationB.com.
   131    PTR     host3.organizationB.com.
   ;
   193     PTR     host1.organizationC.com.
   194     PTR     host2.organizationC.com.
   195     PTR     host3.organizationC.com.