Reverse DNS for static DNS entries doesn't work

My hap ac2 is running on 6.49.7 and works as a router, DHCP server and DNS server in my network, has IP of 10.0.0.1

I’ve setup static DNS entries for pretty much all hosts in my network, with DHCP client reservations for them via:

/ip dns static add address=10.0.0.100   name="somehost.mydomain.com"
/ip dhcp-server lease add address=10.0.0.100  mac-address=<somemac> server=dhcp-main comment="somehost" client-id=someclientid

Unfortunately, the revDNS doesn’t work correctly:

$ nslookup 100.0.0.10.in-addr.arpa 10.0.0.1
Server:		10.0.0.1
Address:	10.0.0.1#53

** server can't find 100.0.0.10.in-addr.arpa: NXDOMAIN

What am I missing?

-type=PTR

Thank you!