Cloudflareさんも外向きはLEさん (X1とX2と何が違うんだっけ)

$ :| openssl s_client -connect nanimona.in:443 > /dev/null
depth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X2
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = E1
verify return:1
depth=0 CN = nanimona.in
verify return:1
DONE