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As is well known is the most popular phrase on the web.

aswell known 131,300 results on the web	As is well known 146,400,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	As is well known, services have as a rule been taxed at the place where the supplier is established. As is well known As is well known, the candidate countries regard direct income transfers as a central component of the CAP. Helsinki also failed to achieve progress in one area. As is well known, the most important issue for the EU is enlargement. As is well known, fires can also occur in buildings. and the President of the Commission referred to this in his speech As is well known, the Commission has made the railways sector into one of its priority areas for taking action.

aswell known

131,300 results on the web

As is well known

146,400,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

As is well known, services have as a rule been taxed at the place where the supplier is established.
As is well known
As is well known, the candidate countries regard direct income transfers as a central component of the CAP.
Helsinki also failed to achieve progress in one area.
As is well known, the most important issue for the EU is enlargement.
As is well known, fires can also occur in buildings.
and the President of the Commission referred to this in his speech
As is well known, the Commission has made the railways sector into one of its priority areas for taking action.