HTTP Header Checker
Free HTTP header checker showing all response headers including status code, content type, caching, security headers, and server information.
How to Use HTTP Header Checker
Enter URL
Type URL to check.
Check
Fetch HTTP headers.
Review
See all headers in table.
Who Uses HTTP Header Checker?
Web developers, SEO professionals, security auditors checking header configurations.
Why Use Our HTTP Header Checker?
All response headers shown
Status code display
Security header check
Free unlimited
Frequently Asked Questions
How accurate is the geographic location provided by an IP lookup tool?
IP geolocation is highly accurate at the country and state level (over 95% accuracy). At the city level, accuracy drops to around 50-75%, as it identifies the location of the ISP's routing hub rather than the user's exact physical device.
Can this tool determine the exact physical street address of an IP address?
No. For privacy and security reasons, public IP lookup databases can only trace an IP to a general metropolitan area or city. Pinpointing an exact street address requires a legal subpoena directed at the Internet Service Provider.
What is the fundamental difference between an IPv4 address and an IPv6 address?
IPv4 uses a 32-bit numeric format (e.g., 192.168.1.1) and is running out of available addresses. IPv6 uses a 128-bit alphanumeric format (e.g., 2001:0db8:85a3::8a2e:0370:7334) to provide a virtually limitless supply of IP addresses for the modern internet.
Does an IP lookup reveal the specific name of the Internet Service Provider (ISP)?
Yes, IP lookups query the ASN (Autonomous System Number) database to reveal the organization or ISP that owns the IP block, such as Comcast, AT&T, Amazon Web Services, or a specific mobile carrier network.
Why does the IP location sometimes show a different city than where I physically am?
This occurs because your connection is being routed through a regional hub owned by your ISP. If you live in a suburb, your IP might register as the major nearby city where the ISP's primary data center is physically located.