wtf is ph-mobile-network?

If you're building an app that needs to know which Philippine mobile carrier a phone number belongs to, say, to route SMS messages, detect fraud, or just label a contact, ph-mobile-network does that lookup for you. You hand it a phone number, and it tells you whether it's Globe, Smart, Sun, TNT, or Dito, while also catching common input mistakes like wrong lengths or non-numeric characters. Under the hood, it works by matching the prefix of a phone number (the first few digits) against known ranges assigned to each carrier in the Philippines. Carriers periodically get new prefixes, so the library lets you append custom prefixes at compile time if the built-in list is out of date. You can also reset a carrier's prefix list entirely if you want to start from scratch. Validation checks that the number is the right length and only contains digits, then reports the carrier or returns a specific error explaining what went wrong. This would be useful for anyone building a Rust application that handles Philippine phone numbers, for example, a startup sending SMS notifications that needs to know whether a number is on Globe or Smart to pick the right gateway, or a fintech app validating user phone numbers during sign-up. Since telecom regulators assign new prefixes over time, the library's extensibility matters: you're not stuck waiting for a maintainer to update the package when a new prefix appears. One notable design choice is the use of Rust's compile-time features and mutex locking, which means prefix updates are handled safely even in concurrent programs. The tradeoff is that it's written specifically for Rust developers, you'd need to be comfortable adding it as a Cargo dependency and working with Rust's error-handling patterns to use it.