Zone files organize the zone records for domain names and subdomains in a DNS server. Every domain name and subdomain has a zone file, and each zone file contains zone records. These files, editable in any plain text editor, hold the cheap jordans for sale DNS information linking domain names and subdomains to IP addresses. Zone files usually contain several different zone records.http://polvam.ru
NOTE: Although domain names might have subdomains, the NFL Jerseys Cheap zone files for subdomains are not considered sub-zone. All zone files are separate entities and do not have a hierarchal structure.
The most common records contained in a zone file are start of authority (SOA), nameserver, mail exchanger, host, and CNAME. These are described below.
Start of Authority (SOA) — Required for every zone file, the SOA record contains caching Cheap nfl Jerseys information, the zone сервере administrator’s cheap jerseys email address, and the Cheap Ray Bans master name server for Cheap nba Jerseys the zone. The SOA also contains a number incremented with each update. As this number updates, it triggers the DNS to reload the zone data.
Mail Exchanger (MX) — The MX record provides the mail server information for that zone to deliver email to the correct location.
Host (A) — Uses the A record to map an IP address to a host name. This is the most common type of record on the Internet.
Canonical Name (CNAME) — A CNAME is an alias for a cheap MLB Jerseys host. Using CNAMEs, you can have more than one DNS name cheap jordans online for a host. CNAME records point back to the A oakley outlet record. When Wholesale nfl Jerseys you change the IP address in your A record, all Ideas CNAME records for that domain name automatically follow the new IP address.
Text (TXT) — This is an informational record. Use it for additional information about a host or for technical oakley sunglasses outlet information to servers.
Service Records (SRV) — SRV records are resource Заточка records used to identify computers hosting specific services.
AAAA — AAAA records store a 128-bit Internet Protocol version 6 (IPv6) address that does not fit the standard Cheap Jerseys A record format. Cheap Jordans Sale For example, 2007:0db6:85a3:0000:0000:6a2e:0371:7234 is a valid 128-bit/IPv6 address.