NSEC3 proving non-existence of tu-berlin.de/DS: An iterations count of 0 must be used in NSEC3 records to alleviate computational burdens. See RFC 9276, Sec. 3.1.
NSEC3 proving non-existence of tu-berlin.de/DS: An iterations count of 0 must be used in NSEC3 records to alleviate computational burdens. See RFC 9276, Sec. 3.1.
tu-berlin.de/DS has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (4)
NSEC3 proving non-existence of tu-berlin.de/DS: The salt value for an NSEC3 record should be empty. See RFC 9276, Sec. 3.1.
NSEC3 proving non-existence of tu-berlin.de/DS: The salt value for an NSEC3 record should be empty. See RFC 9276, Sec. 3.1.
de to tu-berlin.de: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (2001:678:2::53, UDP_-_EDNS0_4096_D_KN)
tu-berlin.de/DS has warnings; select the "Denial of existence" DNSSEC option to see them.