什么是NTT线路？中国访问速度快吗？

国外服务器租用线路选择很重要，对于大多数用户来说，可能比较熟悉CN2线路。但是，如果你租用日本服务器的话，可能接触最多的还是NTT线路。

It is very important to choose the leased line of foreign servers. For most users, they may be familiar with cn2 line. However, if you rent a Japanese server, the NTT line may be the most accessible.

什么是NTT线路？NTT是日本电信电话公社（日语：／にっぽんでんしんでんわ；英文：Nippon Telegraph and Telephone Public Corporation）的简称NTT，为日本一家大型电信公司，目前已经被并列为全球首屈一指的通信公司之一。其中心组成成员为NTT集团，为日本当前最大的电信事业集团。

What is the NTT line? NTT is the abbreviation of Nippon Telegraph and telephone public corporation (NTT), a large Japanese telecommunications company, which has been ranked as one of the world's leading telecommunications companies. Its central member is NTT group, the largest Telecom Group in Japan.

目前NTT主要分为NTT东日本和NTT西日本线路，以日本中部地区为划分界限，就像中国分为南北网络线路一样。

At present, NTT is mainly divided into NTT East Japan and NTT West Japan lines, with the central region of Japan as the boundary, just like China is divided into north-south network lines.

从上面介绍可以看出，NTT在日本乃至全球都是一条比较有名的网络线路，目前大多主机商提供的日本服务器接入的都是NTT线路。或者是很多海外服务器，如果线路节点经过日本的话基本也是对接NTT线路。

It can be seen from the above introduction that NTT is a well-known network line in Japan and even in the world. At present, most of the Japanese servers provided by the host companies are connected with NTT lines. Or many overseas servers, if the line nodes pass through Japan, they are basically connected to NTT lines.

安徽联通去程日本机房路由，走的为NTT线路节点，如下图所示：

The route from Anhui Unicom to Japan machine room is NTT line node, as shown in the following figure:

日本机房回程路由，走的为NTT线路节点，如下图所示：

The return route of Japanese machine room is NTT line node, as shown in the following figure:

那么，NTT线路在国内的访问速度究竟怎么样，表现的又是否理想呢？下面简单分析下。

So, what is the visiting speed of NTT line in China, and is it ideal? Here is a brief analysis.

据了解，日本NTT数据机房网络遍布全球，拥有中国、美国、韩国等全球120多个国家的网络资源和节点，承诺99.9%持续供电保证，支持N+1 冗余备份。更重要的是，日本还拥有全新光纤网路骨干网络，能够提供高品质专线线路，中国访问Ping值基本维持在60ms以下。

It is understood that the NTT data room network of Japan is all over the world, with network resources and nodes in more than 120 countries around the world, such as China, the United States, South Korea, etc., with a commitment of 99.9% continuous power supply guarantee, supporting n + 1 redundant backup. What's more, Japan also has a new optical fiber network backbone, which can provide high-quality dedicated lines. The Ping value of China's visit is basically maintained below 60ms.

根据小编对主机参考日本机房服务器的测试结果，其ping值可以达到40ms左右（混合线路包含NTT）

According to the test results of Xiaobian on the host referring to the server in the computer room of Japan, the Ping value can reach about 40ms (the mixed line includes NTT)

在下载速度方面，NTT线路的下载速度可以达到1M/S以上，虽然不说有很多快，但基本上是不拖后腿的。

In terms of download speed, the download speed of NTT line can reach more than 1m / s, although there are not many fast, but it is basically no drag.

总体来说，NTT线路表现还是比较不错的，国内访问速度还算是可圈可点。但需要注意的是，现在有很多国外IDC商家的线路都有经过日本NTT线路节点，其中就不乏一些绕路的主机商，加上现在使用NTT线路的人又多，这样难免有时候会造成NTT线路访问拥堵及速度慢的情况发生，所以大家在选用时务必要注意。

On the whole, NTT line performance is relatively good, and domestic visiting speed is remarkable. However, it should be noted that there are many lines of foreign IDC merchants passing through NTT line nodes in Japan, among which there are some host companies that make detours. In addition, there are many people who use NTT lines now, which will inevitably cause traffic jams and slow speed of NTT lines sometimes, so we must pay attention when selecting.

以上就是NTT线路的简单介绍，在租用日本服务器时可能经常需要跟它“打交道”。其实NTT也是一条优质的网络线路，大家也可以放心的选用。当然，鉴于NTT线路日益被滥用的情况也不再少数，所以在选用时也要多加留意。

The above is a brief introduction of NTT line. When renting a Japanese server, you may often need to "deal with it". In fact, NTT is also a high-quality network line, you can also rest assured of the choice. Of course, in view of the fact that NTT lines are increasingly abused, more attention should be paid to their selection.

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