netlupaLook up a domain's A record
The A record says which IPv4 address a domain points to. Enter the domain to see it.
What is an A record?
The A (Address) record maps a name to an IPv4 address. It is the record your browser looks up to know which server to connect to when you type a website. A domain can have several A records: traffic is spread across those IPs, which is useful for load balancing or redundancy.
If you have just changed hosting, check here that the A record already shows the new IP.
Lookups by record type
Frequently asked questions
Why does my domain have several A records?
To spread visits across several servers or keep a backup one. It is also common with CDNs such as Cloudflare, which return several IPs from their network.
How long does a DNS change take to propagate?
As long as the old record's TTL: from a few minutes to 24 or 48 hours. Nameserver (NS) changes usually take longer, because the TTL of the delegation in the TLD is high.
What does NXDOMAIN mean?
That the name you looked up does not exist in DNS: the domain is not registered, has expired or was mistyped.
Which DNS servers does this tool ask?
No middleman: Netlupa runs its own resolver, which starts from the root servers and asks each domain's official DNS servers directly.
Can I do a reverse DNS lookup of an IP?
Yes: look the IP up with the API (/api/dns/ptr/8.8.8.8) or use the WHOIS tool to find out who it belongs to.
Why do I see a different value than in my DNS panel?
Because resolvers still have the previous value cached. Wait for the time shown in the TTL, or check that you edited the zone at the provider listed in the NS records: if the domain uses other DNS servers, changes in your panel have no effect.
What is a record's TTL?
The time, in seconds, other servers may keep the answer before asking again. 3600 is one hour. A low TTL makes changes show up sooner, at the cost of more queries.