What the hell is this? Well, by all means check out the heartbleed.
Looking for TLS extensions on https://elliquiy.com
ext 00043 (supported versions, length=2)
ext 00051 (key share, length=2)
ext 00043 (supported versions, length=2)
ext 00051 (key share, length=101)
ext 00000 (server name, length=0)
TLS extension 15 (heartbeat) seems disabled, so your server is probably unaffected.