Yes, 5-5.paris can receive emails.
Yes, 5-5.paris seems to be a legitimate domain.
A record
46.105.57.169
MX records
mx0.mail.ovh.net
178.33.252.245
mx1.mail.ovh.net
188.165.36.237
mx2.mail.ovh.net
87.98.160.167
mx3.mail.ovh.net
91.121.53.175