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Aレコードってなに

Last updated at Posted at 2021-02-25
DNSレコード 意味
A ドメイン名をIPV4とマップ webserver.local => 192.168.1.10
AAAA ドメイン名をIPV6とマップ webserver.local => 2001:0db8:85a3:0000:0000:8a2e:0370:7334
CNAME ドメイン名を別のドメイン名とマップ webserver.local => web.server

FQDNってなに

FQDN = Fully Qualified Domain Name

  • コンピュータの名前(フルネーム)
  • 「ホスト名」と「ドメイン名」で構成されている

例えばmail.dakc.comの場合は、
dakc.com = ドメイン名
mail = ホスト名

※「.com」は、top-level domain(TLD)と言います。

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