Delegating in reverse lookup zones

Barry Margolin barmar at
Tue Dec 15 19:42:37 UTC 2009

In article <mailman.1304.1260905564.14796.bind-users at>,
 Chris Buxton <cbuxton at> wrote:

> It's not a valid delegation unless you control the parent zone.
> ARIN is delegating the /24 reverse zone to you. You therefore have four 
> options that give control of the PTR records to the servers.

A fifth option is to use RFC 2317-style classless delegation for all 256 
entries in the reverse domain:

$GENERATE 0-255 $       IN      CNAME      $.0/24
0/24 IN NS
0/24 IN NS

Then have the customer change the name of their reverse zone to 

Barry Margolin, barmar at
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***

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