Network Tools

Look up basic details about an IP address for quick network checks and troubleshooting.

Check DNS records for a domain to review name resolution and common record types.

Test whether a host responds and review basic reachability and latency information.

Check whether a specific port is open on a host and reachable over the network.

Check whether an IPv4 address is valid before using it in configs, scripts, or troubleshooting.

Check whether an IPv6 address is valid before using it in configs or troubleshooting.

Extract domain names from text, URLs, or mixed copied content.

Extract hostnames from full URLs while preserving subdomains.

Remove duplicate URLs from a list and keep only unique entries.

Clean and normalize pasted URL lists by trimming spaces and removing empty lines.

Convert integer values back into IPv4 addresses.

Inspect MAC addresses and check common vendor prefixes.

Generate random MAC addresses with optional format settings.

Look up the PTR hostname for an IPv4 address.

Check registration and ownership details for a domain or IP.

Find MX records for a domain.

Find nameservers for a domain.

Find TXT records for a domain.

Look up CNAME DNS records for any domain.

Look up SOA DNS records for any domain.

Look up SRV DNS records for any service domain.

Check whether DNS records resolve across public DNS resolvers.

Inspect SSL certificate details for a domain.

Check SSL certificate expiration for a domain.

Check supported TLS versions for a domain.

Check whether a domain sends the Strict-Transport-Security header.

Check basic website response time for a domain or URL.

Check whether a website is up and see its HTTP status code.

Resolve a hostname or domain into its IP addresses.

Calculate the usable IP range for an IPv4 subnet from CIDR input.

Convert an IPv4 CIDR prefix into its subnet mask.

Calculate the IPv4 broadcast address from an IP and CIDR.

Calculate the number of usable IPv4 hosts from a CIDR prefix.

Check whether a port number falls into a well-known, registered, or dynamic range.

Analyze raw email headers and extract key delivery and authentication fields.

Check domain registration age and key dates from public registration data.

Check the SPF TXT record for a domain.

Check a DKIM TXT record for a selector and domain.

Check the DMARC TXT record for a domain.