DNS

A Record Lookup

IPv4 Resolution

Resolve a domain's A records

We'll query authoritative nameservers directly and return every IPv4 address on record.

DNS Resolver

Most domains return the same records on every resolver — the choice matters during DNS propagation, or when a filtering resolver blocks a domain.

Tool features

Comprehensive A record analysis with IP validation and cloud provider detection
4 checks

Address Record Lookup

Find all IP addresses associated with a domain name

IP Analysis

Identify cloud providers, IP classes, and network types

Validation

Validate IP address format and detect potential issues

Fast Resolution

Quick DNS resolution with multiple resolver options

What is a DNS A record & how it works

How domains resolve to IPv4 addresses

An A record (Address record) maps a domain name to one or more IPv4 addresses. When someone visits your site, their resolver looks up the A record to find the server's IP and connects to it. A domain can publish several A records for redundancy and simple round-robin load balancing.

This lookup queries the domain's authoritative nameservers for both the apex (example.com) and the www host, follows any CNAME chain to its final target, and reports each IPv4 address with its TTL and hosting provider.

A Record
Maps a hostname to an IPv4 address, e.g. 93.184.216.34.
TTL
Time-to-live in seconds — how long resolvers cache the record before re-querying.
CNAME
An alias pointing one name at another; the final target’s A record supplies the IP.

How to use this tool

Look up a domain's A records in four steps
1
Enter a domain
Type a domain or full URL, e.g. example.com or https://example.com — we strip the scheme and path automatically.
2
Pick a resolver (optional)
Open Advanced Settings to query a specific public resolver such as Google (8.8.8.8) or Cloudflare (1.1.1.1).
3
Run the lookup
Click Check A Records to query the authoritative nameservers for both the apex and the www host.
4
Review the results
Inspect each IPv4 address, its TTL and provider, plus the diagnostics and recommendations for your DNS setup.

Related tools

Keep debugging with tools from the same suite
4 tools
All DNS Records
Check all DNS records for a domain in one comprehensive scan including all record types
MX Lookup
Find mail exchange (MX) records for email server configuration and priority
TXT Lookup
Retrieve TXT records including SPF, DKIM, DMARC, and verification records
CNAME Lookup
Find canonical name (CNAME) records for domain aliases and subdomain redirection

Frequently asked questions

Common questions about DNS A records
5 Q&A

An A record maps a domain name to an IPv4 address. It is what lets browsers turn example.com into the numeric address of the server that hosts it.

Multiple A records let traffic spread across several servers (round-robin DNS) and provide redundancy — if one IP is unreachable, clients can try another.

An A record holds an IPv4 address; an AAAA record holds an IPv6 address. Many domains publish both so clients can connect over either protocol.

TTL (time-to-live) is how many seconds resolvers cache the record. A lower TTL propagates changes faster; a higher TTL reduces DNS lookups but slows updates.

We also resolve the www subdomain and show it as a separate row, since it often points to the same host as the apex — or a different one, which is worth spotting.