Sisimai::RFC1123 - Internet hostname related class

       azumakuniyuki

"is_internethost(String)"
       is_internethost() method returns true when the argument is a valid hostname

           print Sisimai::RFC1123->is_internethost("mx2.example.jp"); # 1
           print Sisimai::RFC1123->is_internethost("localhost");      # 0

       Copyright (C) 2024 azumakuniyuki, All rights reserved.

       "Sisimai::RFC1123" is a class related to the Internet hosts

       This software is distributed under The BSD 2-Clause License.

perl v5.40.1                                       2025-04-12                              Sisimai::RFC1123(3pm)

       Sisimai::RFC1123 - Internet hostname related class

           use Sisimai::RFC1123;

           print Sisimai::RFC1123->is_internethost("mx2.example.jp"); # 1
           print Sisimai::RFC1123->is_internethost("localhost");      # 0