NOC/ IP-addresses/ Reverse Zone Delegation

• RFC 2317 Classless IN-ADDR.ARPA delegation - classless delegation of reverse zone.
• RFC 1035 Domain names - implementation and specification. - section 3.5 - Domain IN-ADDR.ARPA; section 3.3.12 - format of IN PTR record.
• Reverse Delegation Guide - very useful document from RIPE (for those who also have their own IP-addresses).

Reverse zone delegation procedure for Lucky Net customers:

• send an email message to hostmaster@lucky.net specifying "IN PTR" records for Your network - we suggest you use this option only if you cannot configure your own names server or if you have small networks (not more than /28), or when the reverse resolving is changed frequently;
• delegate reverse zone to ns.ripe.net (for the /24 and higher networks);
• classlessly delegate reverse zone to ns.lucky.net (for networks /28-/25).

• Configure the appropriate reverse zone for your network on your names server. The configuration is same as for direct zones for domain names. Specify ns2.lucky.net as mandatory "secondary&qout; (here you can find the info on how to make the zone secondary on ns2.lucky.net).
• Send the request to hostmaster@lucky.net for this reverse zone. Use the RIPE-049 form to do this.

For /24 networks and higher hostmaster@lucky.net will send the request to RIPE, where the delegation of reverse zone to ns.ripe.net is done (it might take a few days).

See also Reverse Delegation Guide.