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question: How can I test a "reverse" zone with Zonemaster?
category: Using Zonemaster
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To check a reverse zone with Zonemaster, one first needs to know what the reverse zone is, and enter it in the format it has in the DNS. A reserve zone is obtained by reversing an IP address and adding a suffix. IPv4 addresses use the suffix "in-addr.arpa" while IPv6 addresses use "ip6.arpa".

Examples:

* for IPv4 prefix "198.51.100.0/24": 100.51.198.in-addr.arpa
* for IPv6 prefix "2001:db8::/32": 8.b.d.0.1.0.0.2.ip6.arpa
