Add the following to your mix.exs

defp deps do
  [{:domainatrex, "~> 2.2.0"}]

Domainatrex should be able to handle all valid hostnames, it uses the Public Suffix List and is heavily inspired by the fantastic Domainatrix library for Ruby

iex> Domainatrex.parse("someone.com")
{:ok, %{domain: "someone", subdomain: "", tld: "com"}}

iex> Domainatrex.parse("blog.someone.id.au")
{:ok, %{domain: "someone", subdomain: "blog", tld: "id.au"}}

• Use Logger for logging

• Pin a version of nimble_parsec to fix a compilation error on makeup (makeup has fixed this downstream, so when ex_doc updates makeup, this will no longer be required)

• Merge a couple of minor PRs

• Improve tests and docs slightly

• Privatise Domainatrex.match/n and Domainatrex.format_response/2 as they are only ever intended for internal use

• Better handle private domains. Private domains like *.s3.amazonaws.com are technically classed as TLDs (to my understanding?), it doesn't make a lot of sense to parse them this way.
• Fetch a new copy of the public suffix list from The Internet on compile, falling back to a (now updated!) local copy.

• Change the API from returning explicit results to {:ok, result} or {:error, result}. This is to be more uniform with other libraries I use and for better with usage. Sorry if this fucks up your day.

• Fully update the tests to reflect changes in 2.0.0 (thanks for the PR @pbonney!)