Check domain liveness via DNS lookups
A tool to check the geolocation of a domain based on its DNS records.
Domain checker
Rapid checker for the prefix and suffix matching of domain names
Fast domain availability checker. Asks authoritative TLD nameservers directly instead of WHOIS.
TLD registration rule checker
DNS update client (RFC 2136)
Pure-Rust core for vacant: rules, DNS, RDAP.
Network pre-flight check for Claude Code and Codex CLI — verifies DNS, exit IP region, and TCP connectivity
Cross-platform network utilities for Rust
Deterministic failure memory and recovery engine for CI workflows
Publisher policy compliance checker - verifies robots.txt, RSL licenses, Content Signals, and TDM policies
# DnsChecker Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/dns_checker`. To experiment with that code, run `bin/console` for an interactive prompt. ## Installation Add this line to your application's Gemfile: ```ruby gem 'dns_checker' ``` And then execute: $ bundle Or install it yourself as: $ gem install dns_checker ## Usage Just use it! ## Development After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment. To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org). ## Contributing Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/dns_checker. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](contributor-covenant.org) code of conduct. ## License The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
Check if a domain is available or not. Nearly as accurate as whois, and you won't get an error if you make too many calls.
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