NSEC3 Lookup will list NSEC3 records for an domain, NSEC3 record gives verified forswearing of presence to DNS Resource Record Sets. The NSEC3 RR records RR types present at the first proprietor name of the NSEC3 RR. It incorporates the following hashed proprietor name in the hash request of the zone. The total arrangement of NSEC3 RRs in a zone shows which RRSets exist for the first proprietor name of the RR and structure a chain of hashed proprietor names in the zone. This data is utilized to give confirmed refusal of presence to DNS information.