Network

Subnets, your own IP, DNS records and user agents — the questions every network day asks.

• IP Subnet Calculator08·01CIDR to everything: network, broadcast, usable range, host count, mask and wildcard in dots and binary — plus the tightest prefix for a host count.
• What Is My IP08·02Your public IP address, network location and connection details — fetched once from Cloudflare's trace endpoint, shown plainly, logged nowhere.
• DNS Lookup08·03A, AAAA, MX, TXT, CNAME, NS and more for any domain — queried over encrypted DNS (DoH), with TTLs shown the way an operator reads them.
• User Agent Parser08·04Paste any user-agent string — or inspect your own — and get browser, version, engine, OS and device type, decoded by rules, not by a tracking database.