Contents

# Reversed

:earth_americas: Reverse DNS / IP Lookup for Ruby

```ruby
Reversed.lookup("8.8.4.4")
# "dns.google"
```

Works with IPv4 and IPv6

```ruby
Reversed.lookup("2a03:2880:2110:df07:face:b00c::1")
# "a.ns.facebook.com"
```

[![Build Status](https://github.com/ankane/reversed/actions/workflows/build.yml/badge.svg)](https://github.com/ankane/reversed/actions)

## Installation

Add this line to your application’s Gemfile:

```ruby
gem "reversed"
```

## Reference

Set timeout

```ruby
Reversed.lookup(ip, timeout: 3)
```

Set nameservers

```ruby
Reversed.lookup(ip, nameservers: ["1.1.1.1"])
```

Disable SOA fallback (only check PTR record)

```ruby
Reversed.lookup(ip, fallback: false)
```

## History

View the [changelog](https://github.com/ankane/reversed/blob/master/CHANGELOG.md)

## Contributing

Everyone is encouraged to help improve this project. Here are a few ways you can help:

- [Report bugs](https://github.com/ankane/reversed/issues)
- Fix bugs and [submit pull requests](https://github.com/ankane/reversed/pulls)
- Write, clarify, or fix documentation
- Suggest or add new features

To get started with development:

```sh
git clone https://github.com/ankane/reversed.git
cd reversed
bundle install
bundle exec rake test
```

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
reversed-0.5.0	README.md