We have found that, although MidPhase does not forbid adult content websites, they also do not have an “open door policy” on adult sites.

We recommend contacting MidPhase before publishing any adult content on their servers. Here is MidPhase’s Acceptable Use Policy regarding adult website hosting.

Acceptable Use/Illegal Activity
midPhase strives to maintain a high-level of service, and a lot of customers depend on our high standards of quality. As such, we will not provide services to those that are using our services for:

• Hacking, which includes, for example penetrating or attempting to access, without authorization, another computer or network. Port scans, stealth scans, and fraudulent credit card “phishing” techniques are also prohibited.
• Hosting of files or other data that infringes on another’s copyright or other intellectual property rights.
• Spamming, or sending of bulk unsolicited email. We maintain a strict policy on spamming, which includes the sending of unauthorized commercial messages by use of our services, or by maintaining an open SMTP connection. We reserve the right to refuse or terminate service based on reasonable indications that you are engaged in spamming of any sort.
• Uploading or linking to any content that violates another’s right of publicity or privacy.
• Distributing hate speech, or any other content that is obscene, abusing, which could be considered libelous and defamatory.
• Hosting, storing, or distributing child pornography. If any such content is found and brought to our attention, the proper law enforcement agencies will be notified.

As you can see in the last bullet above, they mention pornography or porn once and specifically targeted child pornography. Therefore, if your adult content would be considered illegal in any way in the US, it cannot be hosted at MidPhase which is common for all US web hosts (criminal liability anyone?).