What is a reverse IP lookup?

A reverse IP lookup finds the hostname, ISP, location, and organization associated with an IP address. It is the opposite of a regular DNS lookup which maps hostnames to IPs.

Can I enter a domain name instead of an IP?

Yes. If you enter a domain name, the tool first resolves it to an IP address via DNS, then performs the reverse lookup on that IP.

Why is the location approximate?

IP geolocation databases map IP ranges to physical locations based on ISP registration data — not GPS. The location may point to a city or region, not an exact address.

What does the hostname field show?

The hostname (PTR record) is the reverse DNS name assigned by the IP owner. For example, Google's DNS 8.8.8.8 has the hostname dns.google.

Can I look up any IP address?

You can look up any public IP address. Private IP ranges (10.x.x.x, 192.168.x.x, 172.16—31.x.x) are local network addresses and will not return public records.

What is the difference between reverse DNS and geolocation?

Reverse DNS (rDNS) maps an IP to its configured hostname (set by the server owner). Geolocation maps an IP to an approximate physical location based on regional IP assignment records. They are independent — an IP can have a US geolocation but a .uk hostname.

How accurate is IP geolocation?

City-level accuracy is typically 50—80%. Country-level accuracy is 95%+. VPNs, proxies, and mobile carriers often show the ISP's registered location rather than the user's actual location.

Reverse IP Lookup — Find Hostname & Location for Any IP Free

Find the hostname, ISP, city, country, ASN, and timezone for any IP address or domain. Free instant reverse IP lookup.

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IP geolocation is approximate. Location is based on the ISP's registered address, not GPS. Private IP ranges (192.168.x.x, 10.x.x.x) will not return results.

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What is Reverse IP Lookup — Find Hostname and Location from IP?

A reverse IP lookup takes an IP address and finds its associated hostname (reverse DNS), geographic location, ISP/organization, Autonomous System Number (ASN), and timezone. This is the inverse of a standard DNS lookup — instead of going from domain to IP, it goes from IP to domain and location metadata. Useful for identifying server owners, analyzing traffic sources, and network diagnostics.

How to Use Reverse IP Lookup — Find Hostname and Location from IP

1Enter an IP address (IPv4 or IPv6) or domain name.
2Click Lookup to retrieve the reverse DNS and geolocation data.
3Review the hostname, ISP, city, country, and ASN.
4Check the timezone and coordinates for geolocation.

Key Features

Reverse DNS hostname resolution
IP geolocation (city, region, country)
ISP and organization name
ASN (Autonomous System Number)
Timezone and coordinates

Benefits

Identify the owner of an unknown IP address
Analyze server locations for CDN and hosting decisions
Trace traffic sources to geographic regions
Diagnose network routing issues

Why Use Irreva for Reverse IP Lookup — Find Hostname and Location from IP?

Identify the owner of an unknown IP address

Analyze server locations for CDN and hosting decisions

Trace traffic sources to geographic regions

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