{"code":"HEGCTN","name":"Ondřej Caletka","biography":"Ondřej Caletka graduated from Czech Technical University in Prague and work as a systems engineer at the RIPE NCC. He is also active in Czech IT communities around open source/free software, and acts as an IPv6 and DNSSEC ambassador, delivering talks and trainings at various events.","submissions":["8MWKCY"],"avatar_url":"","answers":[]}