Whois Lookup, Domain Availability & IP Search - DomainTools

AbuseIPDB - IP address abuse reports - Making the Internet safer, one IP at a time

badips.com - Community based IP blacklist service.

boomerang - A tool designed for consistent and safe capture of off network web resources.

Cymon - Threat intelligence tracker, with IP/domain/hash search.

Servicio de seguridad web, desenmascarame

How to verify whether a website is fake or not

Ring of Saturn Internetworking

dnstwist - Domain name permutation engine for detecting typo squatting, phishing and corporate espionage.

IPinfo - Gather information about an IP or domain by searching online resources.

Machinae - OSINT tool for gathering information about URLs, IPs, or hashes. Similar to Automator.

mailchecker - Cross-language temporary email detection library.

MaltegoVT - Maltego transform for the VirusTotal API. Allows domain/IP research, and searching for file hashes and scan reports.

MultiRBL.valli.org - Blacklist, Whitelist and FCrDNS check tool

Free multiple dnsbl rbl lookup and f cr dns check tool test the ip i pv4 or i pv6 of your mailserver on more than 200 blacklists and whitelists

Community - Black Kite

Black kite offers free cyber threat intelligence services including domain phishing detection it blacklist search account breach locater and more

PhishStats

Fighting phishing and cybercrime since 2014 by gathering enhancing and sharing phishing information with the infosec community

Spyse — Internet Assets Search Engine

Spyse is a search engine built for a quick cyber intelligence of it infrastructures networks and even the smallest parts of the internet

SecurityTrails | SecurityTrails: Data Security, Threat Hunting, and Attack Surface Management Solutions for Security Teams

Security trails enables you to explore complete current and historical data for any internet assets ip dns history domain ssl and open port intelligence made easy

SpamCop.net - Blocking List ( bl.spamcop.net )

Beware of cheap imitations spam cop has been protecting the internet community since 1998 automatically file spam reports with the network administrators who can stop unsolicited email at the source subscribe and filter your email before it reaches your inbox

SpamHaus - Block list based on domains and IPs.

Sucuri Security

Check your website security for free with sucuri sitecheck sitecheck scans for malware viruses errors blacklist status and out of date software plugins

Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

Cisco talos intelligence group is one of the largest commercial threat intelligence teams in the world comprised of world class cyber security researchers analysts and engineers and supported by unrivaled telemetry talos defends cisco customers against known and emerging threats discovers new vu

TekDefense - Automater

URLhaus - Malware URL exchange

Share malware distribution sites with the community

URLQuery - Free URL Scanner.

URL and website scanner - urlscan.io

Urlscan io website scanner for suspicious and malicious ur ls

Free Online Tools for Looking up Potentially Malicious Websites

Several organizations offer free online tools for looking up a potentially malicious website some of these tools provide historical information others examine the url in real time to identify threat

Zscaler | Zulu - URL Risk Analyzer