You can use your corona passport/covid certificate in all EU and Schengen countries as well as in the non-EU and Schengen countries that have become part of the EU Digital COVID Certificate cooperation. However, you need to check the specific entry requirements that each country sets. This applies to various rules for, for example, the validity of vaccination, negative tests and previous infection. Some countries also require a negative test in addition to a valid corona passport.
EU / Schengen countries: Andorra, Austria, Belgium, Bulgaria, Croatia, Cyprus, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands (Netherlands), Norway, Poland, Portugal, Romania, San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, the Czech Republic and the Vatican City.
Other countries affiliated to the European Coronapas
There may be countries in addition to these that recognize coronapas.