Blocklist (Disallowlist, Denylist, or Blacklist)

A blocklist (previously referred to as a blacklist) is a list of IP addresses, domains, URLs, or email addresses that are considered as unsafe and therefore are denied access.

The opposite is a whitelist. Blocklists may be used in various areas within security architecture, like; firewalls, DNS servers, directory servers, web proxies, authentication, and API gateways.

Back to Glossary
Share
Linkedin Icon Twitter Icon Facebook Icon E-mal Icon
Get in Touch

Talk to us

Do you want to remove your IP/domain from one of our blocklists?
Please use our lookup-service and follow the instructions there in order to get that resolved.