Cisco Cisco Prime Network Registrar 8.1 User Guide
Cisco Prime Network Registrar IPAM 8.1.1 User Guide
14 Internationalized Domain Names (IDN) Support
2.6
Internationalized Domain Names (IDN) Support
Internationalized Domain Names use characters drawn from a large repertoire (Unicode).
IDNA (Internationalized Domain Names for Applications) as described in RFC 3490 allows
the non-ASCII characters to be represented using only the ASCII characters already allowed in
so-called host names today. This backward-compatible representation is required in existing
protocols like DNS, so that IDNs can be introduced with no changes to the existing
infrastructure.
IDNA is only meant for processing domain names, not other text.
Cisco Prime Network Registrar IPAM supports IDNA as defined in RFC 3490. It allows for
IDNA is only meant for processing domain names, not other text.
Cisco Prime Network Registrar IPAM supports IDNA as defined in RFC 3490. It allows for
data to be entered using Unicode characters and ASCII characters both when entering domain
names. Cisco Prime Network Registrar IPAM also gives the users the ability to switch between
IDN and ASCII when viewing the data. The underlying data is always stored as ASCII or
ASCII Compatible encoding (ACE).
For example, for Internationalized Domain name ‘bücher.com’, the ACE equivalent is ‘xn--
For example, for Internationalized Domain name ‘bücher.com’, the ACE equivalent is ‘xn--
bcher-kva’.
2.6.1 UI Treatment
Screens involving domain names, FQDNs and hostnames in case of domains/zones and
Screens involving domain names, FQDNs and hostnames in case of domains/zones and
owner and RDATA fields in case of resource records get special treatment for IDN support.
If an internationalized domain name is entered, an
If an internationalized domain name is entered, an
icon appears on the upper right hand
corners of the screen. You may click on the icon to switch between IDN (Unicode character
set) and ACE (ASCII compatible encoding) views.
The fields that are affected are marked with a shaded triangle in the upper right-hand
The fields that are affected are marked with a shaded triangle in the upper right-hand
corner. You may hover over the fields with the triangle to see the value in the alternate format
as shown below.
2.6.2 Search and IDN
Domain and resource record searches in Cisco Prime Network Registrar IPAM are done using
Domain and resource record searches in Cisco Prime Network Registrar IPAM are done using
the ASCII representations. If you have Internationalized Domain Names, put full IDN
domain name or full/partial ASCII domain name in the search box to get back the desired
result. Partial IDN search will not work.
For example, to search domain “bücher.com”, you may enter “bücher.com” or “xn--bcher-
For example, to search domain “bücher.com”, you may enter “bücher.com” or “xn--bcher-
kva” (ASCII Compatible representation) or any part of the ASCII compatible name (for
example, "bch") and get back the desired result.
However, putti ng “büc” does not return the domain “bücher.com” since the searches are
However, putti ng “büc” does not return the domain “bücher.com” since the searches are
performed using the ASCII equivalent.