---
name: "ldns-nsec3-hash"
section: "1"
platform: "linux"
package: "ldns"
version: "1.9.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/ldns-nsec3-hash"
---

# ldns-nsec3-hash(1)

print out the NSEC3 hash for a domain name

## NAME

ldns-nsec3-hash - print out the NSEC3 hash for a domain name

## SYNOPSIS

**ldns-nsec3-hash** *\<domain\_name\>*

## DESCRIPTION

**ldns-nsec3-hash** is used to print out the NSEC3 hash for the given domain name.

## OPTIONS

- **-a** *number*

  Use the given algorithm number for the hash calculation. Defaults to 1 (SHA-1).

- **-s** *salt*

  Use the given salt for the hash calculation. Salt value should be in hexadecimal format.

- **-t** *count*

  Use count iterations for the hash calculation.

## AUTHOR

Written by the ldns team as an example for ldns usage.

## REPORTING BUGS

Report bugs to \<dns-team@nlnetlabs.nl\>.

## COPYRIGHT

Copyright (C) 2008 NLnet Labs. This is free software. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.