Network tool
What Is My DNS
See which DNS resolver your connection is using.
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Frequently asked questions
Why does my DNS resolver matter for security?
Your DNS resolver translates domain names into IP addresses for every site you visit. Using a resolver that supports DNSSEC validation, DNS-over-HTTPS (DoH), or DNS-over-TLS (DoT) reduces exposure to DNS spoofing and man-in-the-middle attacks. Enterprise environments often use internal resolvers with filtering to block malicious domains.
Can I change my DNS resolver without changing my ISP?
Yes. You can configure a different DNS resolver directly in your operating system, router, or network adapter settings. Common alternatives include Cloudflare (1.1.1.1), Google (8.8.8.8), and Quad9 (9.9.9.9). Managed IT providers often deploy custom resolvers with threat-intelligence filtering as part of a layered security posture.
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