elephantcs.nl robots.txt parsing

Elephantcs.nl has robots.txt file. Http response code is 200.
Robots size is very small. It is about 14 kb and 4 rows.

elephantcs.nl has sitemap file https://elephantcs.nl/sitemap_index.xml. Host directive is not presented for domain elephantcs.nl in robots.txt file.

Array
(
    [*] => Array
        (
            [sitemap] => Array
                (
                    [0] => https://elephantcs.nl/sitemap_index.xml
                )

            [disallow] => Array
                (
                    [0] => /wp-admin/
                )

            [allow] => Array
                (
                    [0] => /wp-admin/admin-ajax.php
                )

        )

)

Sitemap: https://elephantcs.nl/sitemap_index.xml
User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php

код 301 http://elephantcs.nl/robots.txt
код 200 https://elephantcs.nl/robots.txt