hmm... can't find wings mobile in mobile operator in spain (the list if non exhaustive is pretty long   )
https://www.economie.gouv.qc.ca/objectifs/informer/par-pays/europe/espagne0/page/etudes-et-analyses-19730/?tx_igaffichagepages_pi1%5Bmode%5D=single&tx_igaffichagepages_pi1%5BbackPid%5D=14820&tx_igaffichagepages_pi1%5BcurrentCat%5D=&cHash=f5ee8f37263edbca1a78f674c1852506