Can't find your scuba diver certification card?
Here is a list of websites from different scuba diver training agencies where you can look up your diver certification. Just take a screenshot and bring it with you to your next dive trip:
PADI - only pro certification are able to be checked through the PADI link. for recreational certifications, you must go and see a PADI Divemaster, Instructor or dive centre.
NADD - Global Diving Agency
NASE Worldwide – National Academy of Scuba Educators
SDI – Scuba Diving International
PSS – Professional Scuba School
SNSI – Scuba and Nitrox Safety International