[dns-operations] /24 Reverse DNS delegation using the IP Address 4th octet?

Joe Abley jabley at hopcount.ca
Wed Mar 17 13:34:30 UTC 2010

On 2010-03-16, at 20:50, Mark Andrews wrote:

> The ISP needs to SWIP the address range and add the customers
> nameservers rather their own.  In this way the in-addr.arpa delegation
> goes straight from the RIR to the customer.  The ISP is still in
> control of the address block.

This is only the case if the netblock assigned to the LIR was smaller than a /16. If it was /16 or greater a delegation from the ISP is still required.


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