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dnsmasq Config Generator. Generate dnsmasq DNS/DHCP config. The result stays on this page.

Convert lists into Pi-hole/AdGuard format. The result stays on this page.

Convert TTL seconds to human time and back. The result stays on this page.

Check whether a DNS server is an open resolver. The result stays on this page.

Test whether a name server allows AXFR. The result stays on this page.

Show historical DNS records for a domain. The result stays on this page.

HTTPS/SVCB Record Lookup. Look up HTTPS and SVCB records. The result stays on this page.

Hosts File Generator. Build hosts file entries in bulk. The result stays on this page.

Check domain registration expiry dates. The result stays on this page.

Bulk DNS Lookup. Resolve hundreds of domains at once. The result stays on this page.

Geolocate a list of IPs and export CSV. The result stays on this page.

ASN owner, country and announced prefixes. The result stays on this page.

IP to ASN Bulk Lookup. Map a list of IPs to ASNs. The result stays on this page.

Origin AS, visibility and more-specifics for a prefix. The result stays on this page.

Query public looking glasses from many providers. The result stays on this page.

RIR allocation and abuse contact for an IP. The result stays on this page.

Tor Exit Node Checker. Check whether an IP is a Tor exit. The result stays on this page.

CDN Detector. Detect which CDN serves a website. The result stays on this page.

Hosting Provider Lookup. Find who hosts a website. The result stays on this page.

Find ISP and connection type for an IP. The result stays on this page.

IP ranges by country formatted for firewalls. The result stays on this page.

MAC Address Validator. Validate MAC address syntax. The result stays on this page.

Detect locally administered/randomized MACs. The result stays on this page.

Visual Traceroute. Traceroute plotted on a map. The result stays on this page.