第一级称为“顶级域（TLD, Top-level domains）”，包括 com、org、net 这样的 gTLD 以及 cn、uk ...
Domain Name System Security Extensions (DNSSEC): DNSSEC is a suite of specifications for securing certain kinds of information provided by DNS. It gives origin authentication of DNS data, data integrity, and authenticated denial of existence. DNSSEC does not provide confidentiality of data; all DNSSE...
would refuse mail from spammer@aol.com, any user from cyberspammer.com (or any host within the cyberspammer.com domain), any host in the entire top level domain TLD, 192.168.212.* network, and the IPv6 address 2002:c0a8:51d2::23f4. It would allow relay for the IPv6 network 2002:...
The name post is a proposed top-level domain name (TLD) for the Domain Name System of the Internet. It was submitted to ICANN for approval as a sponsored top-level domain and is intended to be restricted to the use of national and regional postal services and private businesses that provid...
The basic form of this structure is the name of a machine, followed by a top level domain (TLD), separated by dots (periods). For example, britannica.com has the domain name “britannica” and the TLD “com.” The most common type of TLD is a generic one such as “com,”“gov,...
The domain name tel is a top-level domain (TLD) in the Domain Name System (DNS) of the Internet. It was approved by ICANN as a sponsored top-level domain, and is operated by Telnic. ... telephone A single-entry ACH debit initiated by an Originator pursuant to an oral authorization ...
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A domain name is one of the most important components of a domain. It’s how users will find your website. That’s why companies spend a lot of time and money registering a name that can generate more page traffic. Explore our top seven tips and three tools to help you find the… ...