If you are not sure if the website you want to visit is safe, you can check it out here. Enter the address (url) of the website and see the invisible elements, such as a header or meta data.
site address:err.tmall.com/error1.html?c=404&u=https://pages.tmall.co...
favicon.ico:
site title:您查看的页面找不到了!-理想生活上天猫
Url ContentHyperText Markup Language (HTML)
MIME Type / Internet Media Typetext/html
MIME Type text
File Extension.html
More Details (link to:)Wikipedia: HTML
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Server Tengine
Content-Type text/html; charset=utf-8
Transfer-Encoding chunked
Connection keep-alive
Vary Accept-Encoding
Date Wed, 25 Apr 2018 01:59:53 GMT
x-server-id wormholesource011175089104.center.eu13
Vary Origin, Ali-Detector-Type, Ip-Country-Id
Cache-Control max-age=0, s-maxage=3600
X-Response-Time 47
x-readtime 47
X-ETag-Caculator Tengine
ETag W/ 8noReIW41xIK7wM95yyi3A==
Via cache3.l2cm9-2[0,200-0,H], cache20.l2cm9-2[0,0], cache4.cn279[12,200-0,M], cache6.cn279[13,0]
Age 1807
X-Cache MISS TCP_REFRESH_MISS dirn:8:467898776 mlen:-1
X-Swift-SaveTime Wed, 25 Apr 2018 02:30:00 GMT
X-Swift-CacheTime 1793
Timing-Allow-Origin *
EagleId 2aec23ce15246234008855259e
Content-Encoding gzip

Meta Tags

title="您查看的页面找不到了!-理想生活上天猫"
charset="utf-8"
name="renderer" content="webkit"
http-equiv="X-UA-Compatible" content="IE=Edge"
name="spm-id" content="a2233.7711963"

Load Info

page size14660
load time (s)1.237082
redirect count0
speed download4114
server IP42.236.35.254


* all occurrences of the string "http://" have been changed to "htt???/"