A Record Lookup
Find IPv4 addresses (A records) for any domain.
A Record Lookup by Domain
A records (Address records) map a domain name to one or more IPv4 addresses. Looking up A records tells you exactly which server or CDN a domain resolves to.
The A record is the most fundamental DNS record type. It maps a domain name (like example.com) to an IPv4 address (like 93.184.216.34). Multiple A records can exist for the same domain, enabling load balancing across multiple servers. Our tool queries authoritative nameservers directly for live, uncached results, showing each IP address alongside its TTL.
What is a DNS A Record?
A DNS A record maps a domain or subdomain to an IPv4 address. It is the primary record used by browsers and applications to find the server hosting a website.
When you visit a website, your browser performs an A record lookup to find the server's IP address. A records can also exist for subdomains: mail.example.com might resolve to a different IP than example.com. Root domains and subdomains each have their own A records. If a domain has no A record, browsers cannot connect to it — all web traffic depends on A records being correctly configured.
A Records and CDNs
Domains served via CDNs like Cloudflare or Fastly return anycast IP addresses — the same A record resolves to different servers globally based on the requester's location.
Content Delivery Networks use anycast routing to serve traffic from edge servers closest to each user. An A record lookup for a CDN-backed domain returns one of the CDN's edge IPs rather than the origin server IP. This improves performance but means the A record IP alone cannot identify the origin server. To find the origin, you need to bypass the CDN or check server response headers.
A Records vs CNAME Records
A records point directly to IP addresses. CNAME records create aliases pointing to other domain names, which then resolve to A records. Root domains cannot use CNAME records.
A CNAME (Canonical Name) record aliases one domain to another. For example, www.example.com CNAME example.com means www resolves by following the chain to example.com's A record. The root domain (example.com) cannot use a CNAME — it must have an A record directly. This is why CDN providers often offer ANAME or ALIAS records as workarounds for root domain CDN support.
Verify DNS propagation and find the IPv4 addresses behind any domain instantly.
Look up A records nowUse Cases
Developers use A record lookups to verify that DNS changes have propagated after deployments. SysAdmins use them to confirm that failover IPs are live after a server migration. Security researchers use them to map the infrastructure behind a domain and identify hosting providers.