1 Marvin beyer what is an rfc and a curp what is an rfc and a curp 11 BrookAve Hi Marvin What is the context / scope of this? RFC [ɑːrɛfˈsiː] ABBREVIATION RFC (noun) · RFCs (plural noun) (in computing) request for comment, a document circulated on the internet which forms the basis of a technical standard. 1 Marvin beyer It is regarding the tax laws,booking.com is requiring these numbers,either rfc number or curp number 11 BrookAve I think you mean CORP., corporation or company number as its called in Ireland. In other words the company registration number for your business. Check with a local accountant to advise you or a local online website for tax.