whohostsit.
IP ADDRESS & ASN LOOKUP

Who owns this
IP address?

Look up an IPv4 or IPv6 address, an ASN, or a domain. See the network owner,
location, reverse DNS, and where to report abuse.

A domain is resolved to its first IP address. Live routing data

Your browser sends what you search directly to RIPEstat and Google Public DNS. We don’t store your searches.

TRY

Owner, network, and location.

Network details for the IP address or ASN appear here.

PUBLIC DATA. ONE SIMPLE LOOKUP.
THE SHORT VERSION

What an IP lookup shows

Every public IP address belongs to a block registered with one of five regional internet registries, such as ARIN or RIPE NCC, and is announced on the internet by a network with an autonomous system number (ASN). The ASN holder is usually the ISP, hosting company, or cloud provider.

WhoHostsIt combines routing data and registry records from RIPEstat with reverse DNS. The location comes from the MaxMind GeoLite database and is approximate: usually right for the country and sometimes for the city.

Common questions

Can an IP lookup find a person’s address?

No. IP data shows the network that owns an address and a rough location, usually where the provider is based. Only the provider can link an IP to a customer, and only for a legal reason.

How do I report abuse from an IP address?

Use the abuse contact in the results. Network owners publish it for reports of spam, attacks, and other misuse from their addresses.

What is an ASN?

An autonomous system number identifies a network that routes its own IP ranges on the internet, such as AS15169 for Google or AS13335 for Cloudflare. Enter one above to see the prefixes it announces.

MORE FREE TOOLS

Free domain, DNS, email, and IP tools.

Domains

Domain availability checkerSearch a name across 20+ domain endings and see which are free to register.WHOIS lookupSee who a domain is registered with, its key dates, status, and public owner details.Punycode converterConvert international domain names to Punycode (xn--) and back.Domain expiry & age checkerCheck when a domain expires, when it was registered, and how old it is.

Hosting & IP

Website hosting checkerFind out who hosts any website, plus its registrar, DNS and email provider.What is my IP address?See your public IPv4 and IPv6 address, internet provider, and location.

DNS

Nameserver lookupFind out who hosts DNS for a domain and see its nameservers.DNS lookupLook up A, AAAA, MX, TXT, CNAME, NS, SOA, CAA and other DNS records.DNS propagation checkerCompare a record across six public DNS resolvers after you change it.

Email

Email host & MX lookupFind out who hosts an email address or domain, from its MX records.Email address lookupCheck an email address: its format, provider, and whether its domain takes mail.DMARC, SPF & DNSSEC checkerCheck a domain’s DMARC record, SPF record, and DNSSEC status.SPF record checkerValidate an SPF record, follow every include, and count DNS lookups.DKIM & BIMI checkerFind DKIM keys at common selectors, check key strength, and read BIMI.SPF record generatorBuild an SPF record for Google Workspace, Microsoft 365, and other senders.DMARC record generatorCreate a DMARC record with your policy and report addresses.