Subnet, DNS, IP — all in one page
No ads, no signups, no five-different-tabs workflow. IPv4 subnetting + CIDR splitting + IPv6 + IP intel + DNS lookup. Built for the network engineers and CCNA students at Techclick.
Subnet calculator
Get network, broadcast, netmask, wildcard, host range, and binary view from any CIDR.
CIDR splitter
Break a /16 into /24s, a /24 into /27s. See every block at once.
IP intel
Geolocation, ASN, organization, reverse DNS — for any IPv4 or IPv6.
Network training path
Turn subnet results into interview-ready answers
Use the calculation above to explain VLAN sizing, route summarization, DNS checks, and troubleshooting evidence in Techclick practice workflows.