Find the IP address behind any website.
Enter a domain, URL or IP address to see every address it uses, the reverse DNS name, the ASN and network that announce it, and who the address is registered to. No account needed.
- IPv4 and IPv6
- Reverse DNS
- IP to ASN
- Network owner from the registries
- Registered country
What you get
Every address, and the network behind it.
The lookup resolves the domain's IPv4 and IPv6 addresses, then reads each one's reverse DNS name, the autonomous system that announces it and the registry record of who owns it.
ip lookup · example.com
done
- ip address93.184.215.14
- versionIPv4
- reverse dnsnone
- asnAS15133
- networkEDGECAST - Edgecast Inc.
- prefix93.184.215.0/24
- registryRIPE NCC
- countryUnited States
Why it matters
An address tells you where a site really lives.
A domain is only a name. The IP address it points to, and the network that address belongs to, show which company actually carries the site's traffic.
Changes
Confirm a DNS change
After moving a site, check that the domain now points to the new server's address and network, not the old one.
Troubleshooting
Know who to ask
When a site is slow or down, the network that owns its address tells you which host, cloud or CDN is involved.
Research
See how a site is run
Whether a competitor's site sits on a CDN, a big cloud or a small hosting company says a lot about how it is built.
Who it's for
Built for the people who look after websites.
01
SEO specialists
Check where a site's server sits during an audit or a migration, and spot a domain still pointing at an old host.
02
Developers
Confirm which addresses a domain resolves to over IPv4 and IPv6, and which network announces each one.
03
System administrators
Turn an address from a log file into its reverse DNS name, ASN and the organisation it is registered to.
04
Site owners
Find out which company your website's address belongs to, without logging in anywhere.
How it works
From name to network in seconds.
01
Enter a domain or IP
Type a domain, paste a URL or enter an IPv4 or IPv6 address. A URL is reduced to its host name, such as www.example.com.
02
Resolve the addresses
Public DNS gives the domain's IPv4 (A) and IPv6 (AAAA) addresses. An address you typed is used as it is, and private addresses are refused.
03
Read the network
Each address gets its reverse DNS name and its ASN from Team Cymru's IP to ASN service, and the IP registries say who the first one is registered to.
FAQ
Questions, answered.
For a domain, it shows every public IPv4 and IPv6 address the domain points to. For each address you get the reverse DNS name, the ASN and network that announce it, the block of addresses it sits in, the regional registry and the country the network is registered in, plus the organisation the first address is registered to.
Enter the website's domain or any URL on it above. The lookup asks public DNS for the domain's A records (IPv4) and AAAA records (IPv6) and lists every public address it gets back.
An autonomous system number identifies a network on the internet, such as AS13335 for Cloudflare or AS15169 for Google. Every public IP address is announced by at least one autonomous system, so an IP to ASN lookup tells you which network carries the address's traffic.
Normal DNS turns a name into an address. Reverse DNS goes the other way, using a PTR record to turn an address back into a name. Many addresses have none, and the name often belongs to the host rather than the website, so an empty result is normal.
Large sites spread visitors across several servers, and most offer both IPv4 and IPv6. Sites behind a CDN usually resolve to a few of the CDN's shared addresses, which can also change from one lookup to the next.
No. City-level IP geolocation comes from commercial databases that guess a location, and we have no free licensed source for it, so we do not show one. The country shown is where the network is registered with its regional registry, which is not a street address and not always where the server stands.
Many sites sit behind a CDN, which answers for the site and fetches pages from the real server out of sight. The domain then points to the CDN's addresses, so the server's own address and host do not appear in any public record.
Addresses and reverse DNS come from public DNS. The ASN, prefix and registry come from Team Cymru's free IP to ASN service. The owner comes from RDAP, the registry lookup run by ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC, the five organisations that hand out IP addresses.
No. Addresses such as 192.168.1.1 or 10.0.0.1 are used inside home and office networks and mean nothing on the public internet, so there is no owner or network to look up. The lookup refuses them, and skips any a domain points to.
Yes. You can run 10 lookups a day without an account. It uses only public DNS, Team Cymru's free service and the public IP registries, and sends nothing to the address itself.
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