Build, test, and debug regular expressions
This regex matches URLs or domain strings with specific prefixes (sierra-cp, sierracp, sierra-cpengineering, etc.) followed by a common top-level domain (.net, .com, .org, .us, .cn) and an optional path of alphanumeric segments, dots, underscores, or hyphens. It is useful for extracting or validating links related to Sierra CP or Sierra Emissions products, for example in web scraping, log analysis, or text processing. The global flag allows finding all occurrences in a larger text.