A Record Lookup
Look up A records (IPv4 addresses) for any domain. Enter a domain name to find all IPv4 addresses it resolves to.
Frequently Asked Questions
What is an A record?
An A (Address) record is a DNS record that maps a domain name to an IPv4 address. It is the most fundamental DNS record type — when a user types a domain name into a browser, the DNS resolver performs an A record lookup to find the IP address of the web server. A single domain can have multiple A records pointing to different IP addresses for load balancing or failover.
Can a domain have multiple A records?
Yes. Publishing multiple A records for the same domain name is common practice for load balancing and redundancy. DNS resolvers typically return all A records in a round-robin fashion, distributing traffic across multiple servers. If one server becomes unreachable, clients can fall back to another IP address from the record set.
What is the difference between an A record and a CNAME record?
An A record maps a domain name directly to an IPv4 address. A CNAME (Canonical Name) record maps a domain name to another domain name, which is then resolved to an IP address. A records are faster because they resolve in one step; CNAMEs require an additional lookup. You cannot use a CNAME at the zone apex (root domain) — use an A record or ALIAS/ANAME record there instead.
What TTL should I set for my A record?
A common TTL for A records is 3600 seconds (1 hour). For frequently changing records or before a planned migration, lower to 300 seconds (5 minutes) so changes propagate quickly. For stable records, a higher TTL like 86400 seconds (24 hours) reduces DNS query load and speeds up resolution for repeat visitors. Lower TTL means faster propagation but more DNS queries.