A Record Lookup
Find IPv4 addresses for any domain
This page provides original, human-reviewed information about A record lookups and IPv4 DNS resolution. The explanations cover record structure, TTL behavior, and common configuration mistakes, written to be clear, accurate, and useful for both people and search systems.
A records (Address records) are the most fundamental type of DNS record. They map domain names to IPv4 addresses.
How A Records Work:
- User types a domain name in their browser
- DNS resolver queries for A records of that domain
- DNS server returns the IPv4 address(es)
- Browser connects to the returned IP address
A Record Components:
- Name:The domain or subdomain name
- Type:Always "A" for IPv4 addresses
- Value:The IPv4 address (e.g., 192.0.2.1)
- TTL:Time To Live - how long to cache the record
Basic A Record Configuration:
Common A Record Examples:
Root Domain
Points the root domain to an IP
WWW Subdomain
Points www subdomain to an IP
Multiple A Records
Load balancing with multiple IPs
No A Records Found
Domain has no A records configured
Solution: Add A records pointing to your server's IP address
Propagation Delays
DNS changes not visible globally yet
Solution: Wait 24-48 hours for full propagation
Wrong IP Address
A record points to incorrect IP
Solution: Update A record with correct server IP
What's the difference between A and AAAA records?
A records point to IPv4 addresses (like 192.0.2.1), while AAAA records point to IPv6 addresses(like 2001:db8::1).
Can I have multiple A records for one domain?
Yes, multiple A records provide load balancing and redundancy. DNS will return all IPs, andclients typically use the first one.
How long do A record changes take to propagate?
Propagation typically takes 24-48 hours globally, but many users will see changes within hoursbased on TTL values.
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