Compute subnet masks, usable host ranges, broadcast addresses, and 32-bit binary representations in real time.
Query A, AAAA, MX, TXT, CNAME, NS, SOA, and CAA records directly via encrypted DNS over HTTPS.
Optimal Variable-Length Subnet Mask allocation with zero wasted host addresses and visual block map.
Format single and bulk MAC addresses to Cisco, colon, hyphen, or bare hex notation and lookup hardware vendors.
Inspect WebRTC ICE candidates, NAT traversal types, public IPv4/IPv6, and STUN server latency in real time.
Search standard IANA ports (0-65535), TCP/UDP protocols, security vulnerabilities, and development mappings.
Measure real-time HTTP round-trip latency, jitter variance, and packet stability with live waveform graphs.
Calculate network bounds, wildcard masks, usable hosts, and 32-bit color-coded binary breakdowns.
Expand compressed IPv6 addresses, compute 128-bit prefix boundaries, and inspect RFC scopes.
Convert arbitrary starting and ending IP addresses into the minimal set of valid CIDR blocks.
Synchronize dotted decimal, 32-bit binary, hexadecimal, integer, and dotted octal notations.
Query Cloudflare & Google global DNS-over-HTTPS backbones directly from your browser.