Analysts often look for reputation of an IP or URL to categorize and act upon them when they are part of a suspicious communication. The below online sites will give reputation of URLs and IPs, provide their historical information and some of these sites will assess URLs in real time to identify threats.
List Of Sites To Check URL Reputation
AbuseIPDB – Provides reputation of IP addresses and host names with historical information.
Virus Total – Checks the provided URL against multiple blacklist databases.
URL Void – Provides the reputation of URL given, by looking up several blacklist services
IP Void – Provides the reputation of IP given, by looking up several blacklist services