RFC 1348 (rfc1348) - Page 2 of 4
DNS NSAP RRs
Alternative Format: Original Text Document
RFC 1348 DNS NSAP RRs July 1992
The backward translation (from NSAP address to DNS name) is
facilitated by definition of an associated resource record. This
resource record is known as "NSAP-PTR", and is used in a manner
analogous to the existing "in-addr.arpa".
These RRs are intended for use in a proposal [6] by one of the
members of the NOOP WG to address the next-generation internet.
The NSAP RR
The NSAP RR is defined with mnemonic NSAP and type code 22 (decimal).
An NSAP (Network Service Access Protocol) number is a unique string
to OSI transport service.
The numbering plan follows RFC 1237 and associated OSI definitions
for NSAP format.
NSAP has the following format:
NSAP
All fields are required.
identifies the number of octets in the as
defined by the various national and international authorities.
enumerates the actual octet values assigned by the
assigning authority. Its format in master files is a syntactically identical to that used in TXT and HINFO.
The format of NSAP is class insensitive. NSAP RR causes no
additional section processing.
For example:
foo.bar.com. IN NSAP 21 47000580ffff000000321099991111222233334444
host.school.de IN NSAP 17 39276f3100111100002222333344449876
The RR data is the ASCII representation of the digits. It is encoded
as two , i.e., count followed by characters.
The NSAP-PTR RR
The NSAP-PTR RR is defined with mnemonic NSAP-PTR and a type code 23
(decimal).
Its function is analogous to the PTR record used for IP addresses
Manning