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CalcHive

Network & Web

Parse URLs, calculate subnets, look up HTTP status codes, and more.

3 free tools available

Networking and web infrastructure tools are indispensable for anyone who builds, deploys, or maintains internet-connected applications. Our free network tools help you calculate subnets, analyze IP addresses, look up DNS records, inspect HTTP headers, and perform other essential networking tasks. Whether you are planning a network architecture, debugging connectivity issues, or learning about TCP/IP, these tools provide the answers you need.

Network engineers, system administrators, DevOps professionals, and web developers all rely on these types of tools in their daily work. From subdividing an IP address range into properly sized subnets to checking whether a domain's DNS records are configured correctly, our collection covers the most common networking tasks. Many tools work entirely offline in your browser, while others connect to external services for real-time lookups. All are free to use, with no account required.

URL Parser & Analyzer
Popular
Parse URLs into their components
Subnet Calculator
Calculate subnet details from CIDR
HTTP Status Codes Reference
HTTP status code reference guide

Frequently Asked Questions

What is a subnet calculator used for?▾
A subnet calculator helps you divide a network into smaller sub-networks (subnets) by computing network addresses, broadcast addresses, host ranges, and subnet masks from a given IP address and CIDR notation or subnet mask. It is an essential tool for network engineers, system administrators, and DevOps professionals who design, configure, and troubleshoot IP networks.
Can these tools perform live network lookups?▾
Some tools require network access for operations like DNS lookups, WHOIS queries, or IP geolocation. These operations connect to external services to retrieve real-time data. Other tools, like the subnet calculator and IP address converter, perform all computations locally in your browser. Each tool clearly indicates whether it requires network connectivity.
What is the difference between IPv4 and IPv6?▾
IPv4 uses 32-bit addresses (e.g., 192.168.1.1) and supports approximately 4.3 billion unique addresses. IPv6 uses 128-bit addresses (e.g., 2001:0db8:85a3::8a2e:0370:7334) and supports a virtually unlimited number of addresses. IPv6 was developed to address the exhaustion of IPv4 addresses. Our network tools support both IPv4 and IPv6 where applicable.
Are these tools useful for web developers or only network engineers?▾
While network engineers are the primary audience, web developers also benefit from these tools. Understanding HTTP headers, CORS policies, SSL certificates, DNS resolution, and IP addressing is important for debugging web applications, configuring CDNs, setting up development environments, and troubleshooting deployment issues.
How accurate are the IP geolocation results?▾
IP geolocation accuracy varies depending on the data source and the type of IP address. Results are typically accurate to the city level for most broadband connections. Mobile and VPN IP addresses may show less accurate locations. Geolocation data is sourced from reputable providers and is updated regularly, but should be considered approximate rather than exact.