cmdns.dev.dns-oarc.net zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (77.72.225.250, 2a01:3f0:0:57::250)
cmdns.dev.dns-oarc.net zone: There was an error resolving the following NS name(s) to address(es): ns.cmdns.dev.dns-oarc.net
cmdns.dev.dns-oarc.net/A: No response was received from the server over UDP (tried 12 times). See RFC 1035, Sec. 4.2. (77.72.225.250, 2a01:3f0:0:57::250, UDP_-_NOEDNS_)
cmdns.dev.dns-oarc.net/NS: No response was received from the server over UDP (tried 13 times). See RFC 1035, Sec. 4.2. (77.72.225.250, 2a01:3f0:0:57::250, UDP_-_EDNS0_4096_D)
dev.dns-oarc.net to cmdns.dev.dns-oarc.net: No valid RRSIGs made by a key corresponding to a DS RR were found covering the DNSKEY RRset, resulting in no secure entry point (SEP) into the zone. See RFC 4035, Sec. 2.2, RFC 6840, Sec. 5.11.