1# Upper-case greek -> lower-case greek. 2Δημοσθένους.example.com 3# Upper-case ASCII -> lower-case ASCII. 4Hello.example.com 5# Invalid LDH label('-' at begin or end). 6bad-.example.com 7-bad.example.com 8# Invalid LDH (label > 63 bytes). 9abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789.example.com 10# Valid LDH label (label <= 63 bytes). 11abcdef0123456789abcdef0123456789abcdef0123456789abcdef012345678.example.com 12# Invalid name (length > 255 bytes). 13abcdef0123456789abcdef0123456789abcdef0123456789abcdef01234567.abcdef0123456789abcdef0123456789abcdef0123456789abcdef01234567.abcdef0123456789abcdef0123456789abcdef0123456789abcdef01234567.abcdef0123456789abcdef0123456789abcdef0123456789abcdef01234567.example.com 14# Aliases for '.' -> '.'. 15x。example.com 16x．example.com 17x｡example.com 18# Good a-label. 19xn--mumble.example.com 20# Bad a-label. 21xn--123456.example.com 22