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

ref.ad

Extension: .ad

.ad is the country-code TLD for Andorra.

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