COMPUTER CENTER / UTILITIES
TCP connection test on ports 80 and 443
Measure three TCP connection attempts to a public host on port 80 or 443. Check reachability and connection timing from the Computer Center server.
TCP ping
Measure three TCP connection attempts to a public host on port 80 or 443. Check reachability and connection timing from the Computer Center server.
How to use this tool
Enter a hostname or public IP and select HTTP port 80 or HTTPS port 443. Each attempt opens a TCP connection and reports whether it connected and how long it took. The average includes successful attempts only.
Reading the results
This is a TCP connection test, not ICMP ping or a page loading benchmark. A connection can succeed even when an application returns an error. Timing reflects the route from our server and can differ from your location, browser or mobile connection.
Tools index
23 utilitiesDNS changes
Compare a saved DNS snapshot with a fresh lookup.
DNS lookup
A, AAAA, MX, TXT and other DNS records.
DNS comparison
Compare answers from two public resolvers.
WHOIS / RDAP
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Reverse DNS / PTR
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Security headers
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HTTP & TLS
HTTP headers and TLS certificate details.
TCP ping
Connection times on port 80 or 443.
Subnet calculator
Address ranges and subnet masks for IPv4 and IPv6.
My IP & connection
Your IP, network and proxy indicators.
DNS answers come from public resolvers. Registration data comes from the relevant registry. Results reflect the time and location of each check.
Visits and checks are recorded for site administration and abuse prevention.