Frequently Asked Questions
Everything you need to know about your IP address and online privacy.
What is my public IP address?
Your public IP address is the unique identifier that your Internet Service Provider (ISP) assigns to your connection. Websites and services see this address when you visit them. It is different from your private IP address used inside your home or office network.
Why do I see both IPv4 and IPv6?
Most modern networks support both protocols. IPv4 is the older 32-bit system (e.g. 192.0.2.1). IPv6 is the newer 128-bit system (e.g. 2001:db8::1). Many people have access to both simultaneously.
What is rDNS (reverse DNS)?
rDNS is the hostname associated with an IP address via a PTR record. It is useful for identifying the owner or purpose of an IP (mail servers, CDNs, ISPs, etc.).
What is an ASN?
An Autonomous System Number (ASN) identifies a large network on the internet (your ISP, Google, Cloudflare, etc.). It is a key piece of information for routing and reputation.
How accurate is IP geolocation?
City-level accuracy is usually very good for residential connections (within a few miles). Accuracy is lower for mobile networks, VPNs, and large corporate networks. We use multiple high-quality sources to give the best possible result.
Can websites detect VPNs and proxies?
Yes — to varying degrees. Many commercial VPNs and proxies are easy to detect. High-quality residential proxies and some premium VPNs are much harder. Our detector combines multiple signals.
Do you store or log my IP address?
No. We do not log or sell visitor IP addresses. Temporary caching is used only to deliver fast results and prevent abuse.
Why would my IP be on a blacklist?
Common reasons include previous spam activity, being part of a compromised range, or being used by a datacenter/VPN provider that has been abused. You can request delisting from most lists.