URL Blacklist Check
Screen URLs against phishing, malware, and spam threat databases.
URL Blacklist Check — Scan URLs for Phishing & Malware
URL blacklist check queries SURBL, URIBL, and phishing/malware databases to determine if a URL is associated with spam, phishing campaigns, or malware distribution.
URL blacklists focus on specific URLs rather than entire domains. A URL might be blacklisted while the domain itself is clean — for example, a legitimate site compromised to host phishing content. Our tool checks all major URI reputation sources, returning results with risk score and specific listing details.
What is a URL Blacklist?
A URL blacklist is a database of URLs identified as malicious, used in spam, or associated with phishing and malware. Email gateways and web browsers query these lists to block dangerous links.
URL blacklists are more granular than domain blacklists. A single compromised page on a legitimate website can be blacklisted without affecting the rest of the domain. Email content filters extract URLs from message bodies and check them against URI-based blacklists. Google Safe Browsing, SURBL, URIBL, and PhishTank are major providers.
Phishing URLs: How They Get Blacklisted
Phishing URLs are blacklisted through automated spam trap analysis, user reporting, and threat intelligence feeds. Once blacklisted, emails containing that URL are blocked or flagged as spam by most email gateways.
Phishing campaigns typically use newly registered domains or compromised legitimate sites. Spam trap analysis automatically discovers URLs when they appear in messages sent to honeypot addresses. User reporting from Gmail, Outlook, and Yahoo feeds into blacklists within hours. Check your URLs before sending to ensure they're not pre-listed from previous abuse.
SURBL, URIBL, Google Safe Browsing: URI Blacklist Providers
SURBL and URIBL are DNS-based URI reputation lists used by email gateways. Google Safe Browsing protects browsers and email clients. All three query at the subdomain level for maximum precision.
SURBL aggregates data from multiple spam feeds and focuses on domains used in spam body URLs. URIBL maintains its own threat database. Google Safe Browsing covers phishing, malware, and unwanted software URLs used by Chrome, Firefox, Safari, and Gmail. Our checker queries all available URI reputation sources with consolidated results.
Check any URL against SURBL, URIBL, phishing and malware databases to verify link safety.
Check URL reputation nowUse Cases
Email marketers check URLs before campaigns to avoid triggering spam filters. Security analysts check suspicious URLs from reported phishing emails. IT teams verify third-party URLs before sharing in corporate communications. Web developers check their site URLs after security incidents to see if they were blacklisted during a compromise.