optp.kr
optp.kred
optp.krd
optp.닷컴
optp.co
optp.io
optp.us
optp.de
optp.at
optp.nz
optp.be
optp.cl
optp.se
optp.si
optp.ею
optp.ad
optp.ua
optp.gw
optp.한국
optp.рф
optp.co.us

.io🇮🇴

.io is the country-code TLD for British Indian Ocean Territory.

Learn more about .io at IANA or Wikipedia, or view all top-level domains.