Changes

With the Introduction of [[Internationalized Domain Name]]s in Application (IDNA) as the standard for IDNs, the LDH restriction no longer applies to domain names. IDNA makes this possible by using separate labels for display to end user and DNS processes.  

With the Introduction of [[Internationalized Domain Name]]s in Application (IDNA) as the standard for IDNs, the LDH restriction no longer applies to domain names. IDNA makes this possible by using separate labels for display to end user and DNS processes.  

===U-Labels===

===[[U-Label]]s===

IDNs are displayed to the end user using a Unicode encoding scheme. This is known as the '''U-Label.'''

IDNs are displayed to the end user using a Unicode encoding scheme. This is known as the '''U-Label.'''

The U-Label representation for [[.бг]], the [[ccTLD|country code top-level domain]] for Bulgaria, the Unicode codepoints are U+0431 (б) and U+0433 (г).

The U-Label representation for [[.бг]], the [[ccTLD|country code top-level domain]] for Bulgaria, the Unicode codepoints are U+0431 (б) and U+0433 (г).

===A-Labels===

===[[A-Label]]s===

Wt the DNS level, IDNs are processed using an ASCII-compatible encoding scheme. This is known as the '''A-Label.'''

Wt the DNS level, IDNs are processed using an ASCII-compatible encoding scheme. This is known as the '''A-Label.'''