Domain to IP Converter (DNS Forward Lookup)

About the Domain to IP Lookup Tool

The Domain to IP Lookup tool resolves a domain name to its IP address by querying the Domain Name System (DNS). Enter any hostname or domain to find the associated IPv4 or IPv6 addresses, identify the hosting provider or CDN in use, and verify that DNS changes have propagated correctly after a migration or configuration update.

How to Use

• Enter a domain name or hostname in the input field — for example example.com or api.example.com.
• Click Lookup. The tool performs a live DNS A record (IPv4) and AAAA record (IPv6) query and returns the resolved IP addresses.
• Use the result to verify DNS propagation, identify the server or CDN serving the domain, or confirm that a new record has gone live after a DNS change.

How DNS Resolution Works

When a browser or application looks up a domain name, the resolution follows a chain of steps:

• Local cache check — The operating system checks its DNS cache for a recent answer. If found and within the TTL, no network query is made.
• Recursive resolver — The OS queries the configured DNS resolver (typically your ISP or a public resolver like 8.8.8.8 or 1.1.1.1). The resolver may have the answer cached.
• Root nameservers — If not cached, the resolver queries a root nameserver to find the authoritative nameservers for the TLD (.com, .net, .org).
• TLD nameservers — The TLD nameserver directs the resolver to the domain's authoritative nameserver (the one set by the registrar).
• Authoritative nameserver — The resolver queries the domain's authoritative nameserver, which returns the actual DNS records (A, AAAA, MX, CNAME, etc.).
• Response returned — The resolved IP is returned to the application, which then establishes the TCP connection.

DNS Record Types

• A record — Maps a domain to an IPv4 address (e.g., 93.184.216.34). The most common record type.
• AAAA record — Maps a domain to an IPv6 address (e.g., 2606:2800:220:1:248:1893:25c8:1946).
• CNAME record — An alias pointing one domain to another domain name (not directly to an IP). CDNs and load balancers frequently use CNAMEs.
• MX record — Specifies the mail servers responsible for accepting email for the domain.
• TXT record — Stores arbitrary text data. Used for domain verification, SPF, DKIM, and DMARC email authentication records.
• NS record — Identifies the authoritative nameservers for the domain.

Common DNS Scenarios

• Verifying DNS propagation — After changing an A record, use this tool to confirm that the new IP is being returned. Propagation typically completes within minutes to a few hours, depending on the TTL of the old record.
• Identifying the CDN or hosting provider — The resolved IP often reveals the infrastructure provider (Cloudflare, Fastly, AWS CloudFront, etc.) via WHOIS or PTR record lookup on the IP.
• Debugging connection failures — If an application cannot reach a host, verifying that DNS resolves correctly is the first diagnostic step. A failed lookup points to DNS configuration or propagation issues rather than network connectivity.
• Confirming multiple A records — High-traffic domains often have multiple A records for load balancing. This tool returns all configured addresses for the queried domain.

Frequently Asked Questions

Why does a domain resolve to a different IP than I expect?

Several factors can cause this: DNS caching (your resolver has an older cached answer), geographic routing (CDNs return different IPs based on your location), or DNS propagation is still in progress after a recent record change. Try querying from multiple locations using a tool that supports specifying a DNS resolver, or wait for the TTL to expire and retry.

What is TTL and why does it matter?

TTL (Time To Live) is a value on each DNS record that tells resolvers how long to cache the answer (in seconds). A TTL of 3600 means resolvers will cache the result for up to one hour before re-querying. When planning a DNS migration, lower the TTL 24–48 hours in advance so changes propagate quickly after the cutover.

What is the difference between an A record and a CNAME?

An A record maps directly to an IP address. A CNAME maps to another domain name, which is then resolved to an IP. CNAMEs add a DNS lookup step but allow the underlying IP to change without updating every record that references it — useful for CDNs and load balancers. CNAME records cannot be used at the zone apex (bare domain like example.com) in standard DNS; only at subdomains. Some DNS providers offer ANAME or ALIAS records as a workaround.

Why do I see multiple IP addresses for one domain?

Multiple A records on one domain are used for round-robin DNS load balancing — each DNS query may return addresses in a different order, distributing clients across multiple servers. CDNs use Anycast routing, where multiple global servers share the same IP and BGP routes clients to the nearest one.

Can I look up the domain for an IP address?

Yes — this is called a reverse DNS lookup, which queries PTR records. The PTR record maps an IP address back to a hostname. Not all IPs have PTR records configured. Use the Reverse IP / PTR Lookup tool for this direction of resolution.