CIDR Subnet Calculator
Plan VPCs, firewalls and VPN routes with an IPv4 CIDR calculator: network, broadcast, mask, wildcard, host range and “is this IP inside?” — all local.
CIDR / subnet calculator for IT, cloud & VPC planning
Network engineers and cloud admins live in CIDR blocks: VPC design, firewall rules, VPN routes. This IPv4 subnet calculator runs locally—paste 10.0.0.0/16 and get network, broadcast, mask, usable hosts and range without shipping diagrams to a random site.
- Network, broadcast, netmask, wildcard
- First / last usable host and host counts
- Membership check — is this IP inside the CIDR?
Veelgestelde vragen
Do you support IPv6?
This calculator is IPv4/CIDR (e.g. 10.0.0.0/16). IPv6 can be added later; most corporate VPC worksheets still start with IPv4.
Is my network diagram uploaded?
No. All math is bitwise arithmetic in the browser.
Reacties (0)
Vragen, ideeën of een bug in “CIDR Subnet Calculator”? Laat een reactie achter, beoordeel de tool of reageer op anderen.
Nog geen reacties. Deel als eerste je feedback!