Categories
🌐 Network
Tools for networking and web communication, such as IP subnet calculation and HTTP status code reference.
Tools in this category
Parse browser, OS, and device information from a User-Agent string.
Look up HTTP status codes by code number, keyword, or category (1xx–5xx).
Look up the MIME type for a file extension, or search by MIME type or category.
Validate A, AAAA, CNAME, MX, NS, TXT, and SRV record values and generate them in zone file format.
Generate a User-Agent string from a combination of major browsers and operating systems.
Look up commonly used HTTP request and response headers.
What you can do here
IP and DNS
Calculate IP subnets and check the format of DNS records.
HTTP references
Look up HTTP status codes, HTTP headers, and MIME types.
User-Agent
Parse and generate User-Agent strings.
Common use cases
Check address ranges and host counts in CIDR notation while designing a network
Look up what an HTTP status code means while investigating an API error
Check DNS record values for format errors before registering them