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What Is RDAP and How Do You Look Up a Domain, IP Address, or ASN?
RDAP (Registration Data Access Protocol) is the structured, HTTPS-based replacement for WHOIS. You use it to look up registration…
What Is WHOIS and What Can a WHOIS Lookup Tell You?
A WHOIS lookup returns the registration record for a domain name or IP address: who registered it, through which registrar, when …
What Is DNS and How Does It Work?
DNS (Domain Name System) is the internet's naming layer: it translates human-readable domain names like google.com into the IP ad…
What Is an IP Address and How Can I See My Public IP on Windows?
An IP address is a numeric label assigned to a device or network so data can be routed to and from it. On Windows you have two re…
Cybersecurity Basics: What It Protects and How to Apply It to Your Website
Cybersecurity is the practice of keeping your data, accounts, and services from being accessed, stolen, altered, or knocked offli…
What Is a Domain Name and How Does It Work?
A domain name is the human-readable address people type to reach a website or online service — like sedo.com. It works by mapping…
How to Use Ahrefs for Your First SEO Audit: A Step-by-Step Tutorial
If you're new to Ahrefs and want to run your first SEO audit, the fastest path is: open Site Explorer, enter your target URL, rev…
Understanding RDAP
A standard protocol for looking up a domain's registrar, registration date, expiry date and status.
Understanding DNS
Translates domains into server addresses and carries records for email, verification and security policies.