Free IP tools
Look up the location and network of any IP address, see your own IP and provider, calculate subnets and convert IP ranges to CIDR. Free, no account needed, with VPN, proxy and Tor flags, ASN data and hosted domains.
Free tool · ASN data
ASN lookup
Owner and prefixes of any AS number.
Free tool · CSV export
Bulk IP lookup
Up to 100 IPs at once, CSV export.
Free tool · converter
IP address converter
Decimal, hex, binary, IPv4↔IPv6.
Free tool · IPv4 & IPv6
IP address lookup
Location and owner of any IP.
Free tool · IPv4 & IPv6
IP range to CIDR converter
Ranges to CIDR blocks and back.
Free tool · Hosted domains
Reverse IP lookup
Domains hosted on any IPv4 address.
Free tool · IPv4 & IPv6
Subnet calculator
CIDR, netmask and host range.
Free tool · VPN detection
VPN and proxy checker
VPN, proxy and Tor flags of any IP.
Free tool · instant
What is my IP address?
Your public IP, location and provider.
Free tool · instant
What is my ISP?
Which internet provider you use.
Reference
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 documentation150 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 }
}
}