A LOOKUP AAAA LOOKUP BLACKLIST LOOKUP CERT LOOKUP CNAME LOOKUP COUNTRY LOOKUP DKIM LOOKUP DMARC LOOKUP DNS LOOKUP DNSKEY LOOKUP HINFO LOOKUP HTTP LOOKUP HTTPS LOOKUP IP LOOKUP IPSECKEY LOOKUP LOC LOOKUP MX LOOKUP NAPTR LOOKUP NS LOOKUP PING LOOKUP PTR LOOKUP REVERSE LOOKUP SMTP LOOKUP SOA LOOKUP SPF LOOKUP SRV LOOKUP TCP LOOKUP TLS LOOKUP TRACE LOOKUP TXT LOOKUP WHOIS LOOKUP

Access all of your MX record, DNS, blacklist and SMTP diagnostics etc using `All Tools`. Lorem ipsum, dolor sit amet consectetur adipisicing elit. Labore mollitia eaque amet quis dolorum, eveniet voluptatum molestias exercitationem quam alias laborum ex porro laudantium laboriosam harum cumque ipsam sapiente quo?

TCP LOOKUP

About TCP Lookup

A TCP (Transmission Control Protocol) Lookup checks the status of TCP ports for a given IP address or domain, helping to identify open or closed ports. This lookup is useful for network diagnostics, security assessments, and ensuring that the necessary services are reachable over the network, enhancing overall connectivity and troubleshooting capabilities.