TCP/IP Configuration and Management Manual

Configuration Reference
TCP/IP Configuration and Management Manual—427132-004
A-18
Domain Name Server Files
WKS—Well-Known Services
The format of this record is:
[name] [ttl] addr-class WKS address protocol services
For example:
pubs IN WKS 128.33.0.11 UDP who route timed
IN WKS 128.33.0.11 TCP (echo telnet
discard sunrpc
sftp uucp-path
systat
daytime)
The Well-Known Service record (WKS) describes the well-known services supported
by a particular protocol at a specified address. The list of services and port numbers
comes from the list of services specified in the $SYSTEM.ZTCPIP.SERVICES file. Use
only one WKS record for each protocol per address.
CNAME—Canonical Name
The format of this record is:
aliases [ttl] addr-class CNAME canonical-name
For example:
bcumonet IN CNAME monet
The Canonical Name resource record (CNAME) specifies an alias for a canonical
name. An alias should be the only record associated with the alias name; all other
resource records should be associated with the canonical name, and not with the alias.
Any resource records that include a domain name as their value (such as NS or MX)
should list the canonical name, not the alias.
PTR—Domain Name Pointer
The format of this record is:
name [ttl] addr-class PTR ireal-name
For example:
7.0 IN PTR monet.BigCityU.Edu.
A Domain Name Pointer record (PTR) allows special names to point to some other
location in the domain. In the example, a PTR record sets up reverse pointers for the
special IN-ADDR.ARPA domain. PTR names should be unique to the zone.
MB—Mailbox
The format of this record is:
name [ttl] addr-class MB machine