---
id: "surbl"
kind: "glossary-term"
title: "SURBL"
language: "en"
category: "Security and abuse"
updated: "2026-10-04T14:17:43Z"
canonical: "https://tldlog.com/glossary/surbl/"
translations:
  es: "https://tldlog.com/es/glosario/surbl/"
  de: "https://tldlog.com/de/glossar/surbl/"
  fr: "https://tldlog.com/fr/glossaire/surbl/"
  it: "https://tldlog.com/it/glossario/surbl/"
  pt-BR: "https://tldlog.com/pt/glossario/surbl/"
  ru: "https://tldlog.com/ru/glossariy/surbl/"
  zh-Hans: "https://tldlog.com/zh/cihui/surbl/"
---

# SURBL

A service that publishes lists of domains and websites seen in unwanted messages, such as spam, phishing and malware links. Unlike lists of sending mail servers, it looks at the links inside the messages. Mail filters use it, and studies of domain abuse have drawn on its data.

## related terms

- [blocklist](https://tldlog.com/glossary/blocklist/)
- [Spamhaus](https://tldlog.com/glossary/spamhaus/)
- [domain reputation](https://tldlog.com/glossary/domain-reputation/)
- [spam](https://tldlog.com/glossary/spam/)
- [phishing](https://tldlog.com/glossary/phishing/)