I'd highly recommend anyone going to Spain use these sites, for Madrid , second for Barcelona. Any phone number you see for either city on any other sites such as this one advertised in this post
always cross reference the phone number using the search bars in these sites, no reviews=red flag! Too many great options in this country to gamble; do your homework, the search bar is your friend... ( might need register to avoid the pop ups) . I also advise if a girl does not have WhatsApp to pass; no guarantee using WhatsApp you are talking to her but the majority of ladies known to give good service to tourists will usually always have the WHatsApp option. The following site can also be used for all of Spain and filters allow you to chop off agencies and check Indies only if you prefer and check the WhatsApp box etc.... You can also see ' available now' to book on the spot!
All of Spain:
https://www.slumi.com/
Madrid:
https://esaschicas.com/
https://spalumi.com/
Barcelona:
https://www.sexomercadobcn.com/ ( This is perhaps my favorite escort site in the world, navigation takes time to learn but top notch! )
And the below link is to a porn star who hosts gang bangs and parties in Spain ( usually the south) and other parts of Europe but she usually hosts them in Germany; using all her links including the PornHub videos etc. can lead you to her friends and other links to find porn stars in Spain.
http://www.salmadenora.com/