Network

DNS lookups, WHOIS, subnet calculator, and network diagnostics

27 tools available

IP Address Parser

Parse IPv4 or IPv6 addresses and show type, hex, binary, and decimal.

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URL Parser

Break a URL into its components: protocol, host, path, query params, and hash.

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Defang / Refang URLs & IPs

Make URLs and IPs safe to share in reports by defanging them.

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MAC Address Formatter

Convert MAC addresses between colon, hyphen, dot, and plain formats.

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Extract IP Addresses

Extract all IPv4 and IPv6 addresses from a block of text.

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Extract URLs

Extract all URLs from a block of text.

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Extract Email Addresses

Extract all email addresses from a block of text.

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DNS Lookup

Query any DNS record type for a domain using DNS-over-HTTPS.

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WHOIS Lookup

Look up domain registration and ownership details via RDAP.

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Subnet Calculator

Calculate network and host ranges from a CIDR or IP + mask.

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IP Blacklist Check

Check if an IP address appears on 15 common DNS blacklists.

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HTTP Headers Checker

Inspect HTTP response headers and audit security headers.

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What Is My IP

Detect your public IPv4 and IPv6 addresses.

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DNS Propagation Check

Check DNS propagation across Google, Cloudflare, and Quad9.

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IP in Subnet

Check whether an IP address falls inside a given subnet (CIDR).

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ASN Lookup

Look up ASN, organization, and geolocation for an IP address.

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Domain Dossier

Comprehensive domain report: WHOIS, DNS records, and IP geolocation in one view.

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Domain Check

Check if a domain name is available for registration.

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Email Dossier

Validate an email address: syntax, MX records, SPF, and DMARC.

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Browser Mirror

See what your browser reveals: IP, user agent, screen, timezone, and more.

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Ping

Check if a host is reachable and measure round-trip latency.

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Traceroute

Trace the network path from this server to any host.

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SPF Lookup

Look up and parse the SPF record for a domain.

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DKIM Lookup

Look up a DKIM public key record for a domain and selector.

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DMARC Lookup

Look up and parse the DMARC policy for a domain.

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Port Check

Check if a TCP port is open on a host.

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TCP Connect

Connect to any host and port and see the service banner — like telnet.

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