Frequently asked questions
Find clear answers to common questions about IP addresses, DNS, connectivity, privacy and network tools.
What is an IP address?
A unique number that identifies your device on the internet, like a mailing address for your connection.
Can someone find my exact location from my IP?
No. An IP address generally reveals an approximate city or region, not your exact street address.
IPv4 vs IPv6: what's the difference?
IPv4 uses shorter numeric addresses. IPv6 is newer and provides a much larger address space.
What can I do with WhatAnIP's network tools?
WhatAnIP provides free tools for checking IP addresses, DNS records, domain information, network security, privacy settings, and other internet diagnostics.
Are WhatAnIP tools free to use?
Yes. The core IP, DNS, WHOIS, ASN, privacy, and network diagnostic tools on WhatAnIP are free to use.
Do I need to create an account to use the tools?
No. Most WhatAnIP tools can be used directly without creating an account or signing in.
What is the IP Lookup tool used for?
IP Lookup provides information about an IP address, such as its approximate location, ISP, network provider, ASN, and other available network details.
What is the difference between IP Lookup and ASN Lookup?
IP Lookup focuses on a specific IP address, while ASN Lookup provides information about the Autonomous System that owns or announces a group of IP addresses.
What does the WHOIS Lookup tool show?
WHOIS Lookup can show domain registration information such as the registrar, registration date, expiration date, nameservers, domain status, and DNSSEC information when available.
What can I find with DNS Lookup?
DNS Lookup lets you inspect DNS records such as A, AAAA, MX, NS, TXT, CNAME, and SOA records for a domain.
What is Reverse DNS Lookup?
Reverse DNS Lookup checks whether an IP address has a PTR record that maps the address back to a hostname.
What is DNS Propagation?
DNS propagation is the process of DNS changes being updated across recursive DNS resolvers. The DNS Propagation tool compares responses from multiple resolvers to help identify differences.
What does the DNS Health Check tool test?
DNS Health Check reviews important DNS configuration details and can help identify missing, inconsistent, or potentially problematic DNS records.
What is the Domain to IP tool used for?
Domain to IP resolves a domain or hostname to its current IPv4 and IPv6 addresses when those records are available.
What does the Subdomain Finder do?
The Subdomain Finder searches publicly available certificate and DNS-related data to identify hostnames that may belong to a domain. Results can include historical or inactive subdomains.
What does the Blacklist Check tool test?
Blacklist Check tests an IP address against selected DNS-based blocklists to see whether the address is currently listed by those services.
How does VPN and Proxy Detection work?
VPN and Proxy Detection checks available network intelligence signals to determine whether an IP address may be associated with a VPN, proxy, hosting provider, or similar network service.
What does the Tor Exit Node Check do?
Tor Exit Node Check determines whether an IP address appears on the current list of known Tor exit nodes.
What information does the Browser Info tool show?
Browser Info displays technical information reported by your browser, such as the user agent, platform, language, screen details, and other browser-exposed properties.
What does the Privacy Test check?
Privacy Test reviews browser and connection information that websites may be able to observe and helps you understand what technical information your browser exposes.
What does the Headers Check tool do?
Headers Check retrieves HTTP response headers from a website and helps inspect information such as security headers, server responses, redirects, and caching behavior.
What does the SSL/TLS Check tool test?
SSL/TLS Check inspects a website's HTTPS certificate and connection details, including certificate validity, hostname coverage, protocol information, and cipher details when available.
Are the results from network and security tools always definitive?
No. Results depend on DNS data, third-party databases, public records, network conditions, and service availability. They should be treated as diagnostic information rather than a guarantee.