Free tool · IPv4 & IPv6

IP address lookup

Enter an IP address to see where it is located and which provider and network it belongs to.

What you get

Country, region, city and postal code, ISP and organization, ASN and network range, time zone, the VPN, proxy and Tor flags with a threat score, and the number of domains hosted on the address.

How accurate is it?

Country-level data is very reliable. City-level accuracy depends on the network: good for fixed broadband, lower for mobile and VPN traffic.

Building this into an app? Use the IP lookup API and its IP info endpoint documentation.

IP geolocation by API

curl "https://api.ipbase.com/v2/info?ip=8.8.8.8" -H "apikey: YOUR-API-KEY"

Use the fields parameter to return only what you need, e.g. fields=ip,location.country.alpha2,security.

Frequently asked questions

How do I look up an IP address?

Enter the IPv4 or IPv6 address and click Look up. You get its location, provider and network.

Where does the data come from?

We combine commercial and public IP datasets with geofeeds from network operators and corrections sent to us.

Can I look up IP addresses from server logs?

Yes, paste up to 100 addresses at a time into the bulk IP lookup, or use the API's batch endpoint for larger files.

IP geolocation API

Get this data in your app

ipbase returns location, ISP, ASN and time zone for any IPv4 or IPv6 address, up to 1,000 addresses per POST request. Security flags (VPN, proxy, Tor, data center) are on the Small plan and above.

Read the documentation

150 free requests every month. No credit card required.

GET https://api.ipbase.com/v2/info?ip=1.1.1.1

{
  "data": {
    "ip": "1.1.1.1",
    "type": "v4",
    "connection": {
      "asn": 13335,
      "organization": "APNIC and Cloudflare DNS Resolver project",
      "isp": "Cloudflare, Inc",
      "range": "1.1.1.0/24"
    },
    "location": {
      "country": { "alpha2": "AU", "name": "Australia" },
      "zip": "4000"
    },
    "security": { "is_vpn": null, "is_tor": null, "threat_score": null }
  }
}

Free IP tools

ASN lookup Owner and prefixes of any AS number. Bulk IP lookup Up to 100 IPs at once, CSV export. IP address converter Decimal, hex, binary, IPv4↔IPv6. IP range to CIDR converter Ranges to CIDR blocks and back. Reverse IP lookup Domains hosted on any IPv4 address. Subnet calculator CIDR, netmask and host range. VPN and proxy checker VPN, proxy and Tor flags of any IP. What is my IP address? Your public IP, location and provider. What is my ISP? Which internet provider you use. Cloud & bot IP rangesOfficial lists of AWS, Googlebot, GPTBot and more.

Example lookups: 8.8.8.8 · 8.8.8.0/24 · AS15169 · example.com · all IPv4 ranges