[address-policy-wg] 2023-01 New Policy Proposal (Reducing IXP IPv4 assignment default size to a /26)

Dear David,

On Wed, Jan 11, 2023 at 01:08:18PM -0600, David Farmer via address-policy-wg wrote:
> Does the NCC's reverse DNS delegation tooling allow for a DNS
> delegation of a prefix longer than a /24?

Yes.

See https://apps.db.ripe.net/docs/entire-documentation-(HTML)#description-of-the-domain-object

	"For IPv4 addresses, a dash is allowed in the fourth octet of
	the reverse address. This allows for reverse DNS delegations for
	address space that doesn't fall on octet boundaries as specified
	in RFC 2317. A dash is not allowed in any other octet."

Example:

To set up Reverse DNS for this IPv4 address range: 10.2.1.6 - 10.2.1.25
using the dash notation, the zone name becomes "6-25.1.2.10.in-addr.arpa"

Kind regards,

Job