Run Cloudflare’s internet speed test from a terminal and view results in a text interface.
Open source
24 alternativesNetworking Toolbox
Networking Toolbox offers online tools for IP addressing and subnet calculations.
About Networking Toolbox
Networking Toolbox is a free, web-based set of online tools for IP addressing and subnetting. Its homepage describes it as a companion for networking work. The core tools include an IPv4 subnet calculator, CIDR to subnet mask conversion, and MAC address conversion.
The homepage also lists tools for DNS record checks, HTTP header and TLS certificate analysis, DHCP option generation, and TCP port checking. The homepage does not state pricing, and it does not describe how submitted data is handled.
Key features
- IPv4 subnet calculator for network addresses, broadcast addresses, and host ranges
- CIDR notation to subnet mask conversion, such as /24 to 255.255.255.0
- MAC address conversion between formats, with manufacturer lookup from the OUI database
- DHCP Option 43 generator for wireless controller discovery
- DNS lookup, propagation checking, and SPF, DMARC, and CAA policy checks
- TCP port checker and TLS certificate analyzer
Best for: Network administrators and engineers who need to plan IP addressing, subnets, or DHCP settings.
Good for
- Free, according to the homepage description
- Covers IP addressing, subnetting, DNS, DHCP, HTTP, and TLS in one site
Networking Toolbox at a glance
- Website
- networkingtoolbox.net
- Category
- Development › Network Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Networking Toolbox alternatives
Tools and sites you could use instead, ranked by how closely they match.
Find the IPv4 and IPv6 addresses for Cloudflare 1.1.1.1 and its family DNS resolvers in the service documentation.
Check-Host monitors websites and checks servers, IP addresses, and host availability.
LibreQoS Test measures connection quality and latency while a network is under load.
NetBlocks Internet Performance Monitor checks network connectivity and performance issues.
Pinging.net monitors internet connectivity and displays network status measurements.
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Networking Toolbox FAQ
Is Networking Toolbox free to use?
The homepage meta description describes it as a free set of online tools. Pricing is not otherwise stated on the homepage.
Does it include tools for DHCP configuration?
Yes. The homepage lists DHCP option generators, including Option 43 for wireless controller discovery, along with other DHCP option and lease time tools.
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