<a href="https:&#x2F;&#x2F;posthere.io&#x2F;" rel="nofollow">https:&#x2F;&#x2F;posthere.io&#x2F;</a> implements 451, 420 and 100-103. It also doesn&#x27;t return an Allow: header for 405.<p>I opened an issue for that: <a href="https:&#x2F;&#x2F;github.com&#x2F;SnootyMonkey&#x2F;posthere.io&#x2F;issues&#x2F;4" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;SnootyMonkey&#x2F;posthere.io&#x2F;issues&#x2F;4</a>