NetOpsKit

Global HTTP Test

Test a website or HTTP endpoint from multiple global locations.

Test an HTTP endpoint worldwide

Enter an HTTP or HTTPS URL. A hostname without a scheme is tested with HTTPS.

What does this HTTP test measure?

Each Agent performs a real HTTP GET request. The result reports the HTTP status, resolved address, DNS lookup, TCP connection, TLS negotiation, time to first byte, and total response time actually measured by that Agent.

HTTP test vs Ping

Ping measures ICMP reachability and round-trip latency. HTTP reaches the web or API application, so it includes DNS, TCP, TLS, server processing, CDN behavior, and the HTTP response.

What is TTFB?

Time to first byte measures the interval between sending the request and receiving the initial response headers. A slow TTFB can reflect network delay, TLS setup, application work, or origin performance.

Why can HTTP be slow while Ping is fast?

Ping does not perform a TCP handshake, negotiate TLS, contact the application, or wait for the origin to generate a response. Any of those stages can make HTTP slow even when basic network latency is low.

Why can Ping fail while HTTP works?

Many networks filter ICMP while continuing to allow HTTPS. A failed Ping alone does not prove that a website is unavailable.

Frequently asked questions

What does this HTTP test measure?

Each probe performs a real HTTP GET request and reports DNS lookup, TCP connection, TLS negotiation, time to first byte, total response time, HTTP status, and resolved IP.

How is an HTTP test different from Ping?

Ping measures ICMP reachability and round-trip latency. An HTTP test reaches the web application and includes DNS, TCP, TLS, and server processing time.

What is TTFB?

Time to first byte is the time from sending the HTTP request until the first response headers become available. It includes network delay and server processing.

Why can HTTP be slow while Ping is fast?

TCP connection setup, TLS negotiation, application processing, CDN behavior, and origin performance add work that an ICMP Ping does not measure.

Why can Ping fail while HTTP works?

A firewall may block ICMP echo traffic while still allowing TCP port 443 and HTTPS requests.

NETGlobal Network TestTest HTTP, TCP, Ping, Traceroute, and MTR from multiple locations worldwide.TCPTCP Port TestCheck one public TCP service port from multiple global locations.PINGGlobal Ping TestMeasure ICMP reachability, latency, and packet loss from global probe locations.DNSGlobal DNS LookupQuery DNS record types from multiple global Agent locations.TLSSSL / TLS CheckerInspect certificates, protocol support, TLS negotiation, and HTTPS security for every public endpoint.TRACEGlobal Traceroute TestTrace network paths and hop latency from multiple global locations.