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cnnic.net.cn

首页----中国互联网络信息中心

Last scanned Jul 26, 2026, 5:47 AM · 3 views

73

Overall score

Fair

Summary

This website uses Nginx hosted on CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN. SEO is fair (55/100) and accessibility is good (75/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

China
Hosted on CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN

Top issues to fix

12 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

+6 more issues — details in the sections below.

55

SEO

6 issue(s) found

100

Performance

736 ms

65

Security

HTTPS & header checks

75

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Meta tags

Title
首页----中国互联网络信息中心
Description
Canonical
Language
zh-CN
Charset
UTF-8
Viewport
width=1300, maximum-scale=2, user-scalable=no
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQueryNginx

Hosting & CDN

CDN provider
—
IP address
159.226.6.133
ASN
AS7497 (CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN)

DNS records

TypeValue
A
  • 159.226.6.133
  • 182.131.26.231
AAAA
  • 2001:dc7:dd01:0:218:241:97:42
  • 2001:dc7:cd1a:0:182:131:26:231
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.2
Issuer
DigiCert, Inc.
Subject
www.cnnic.cn
Valid from
May 13, 2026
Valid to
Nov 27, 2026
Days until expiry
122
SAN domains
www.cnnic.cn, cnnic.cn, www.cnnic.com.cn, cnnic.com.cn, www.cnnic.org.cn, cnnic.org.cn, www.cnnic.net.cn, cnnic.net.cn, www.cnnic.ac.cn, cnnic.ac.cn, xn--fiQ7Iq58Bfy3A8bB.cn, www.xn--fiQ7Iq58Bfy3A8bB.cn, xn--fiQ7Iq58Bfy3A8bB.xn--55Qx5D, www.xn--fiQ7Iq58Bfy3A8bB.xn--55Qx5D, xn--fiQ7Iq58Bfy3A8bB.xn--fiQs8S, www.xn--fiQ7Iq58Bfy3A8bB.xn--fiQs8S, xn--fiQ7Iq58Bfy3A8bB.xn--io0A7I, www.xn--fiQ7Iq58Bfy3A8bB.xn--io0A7I, xn--fiQ7Iq58Bzh2Ae4C.cn, www.xn--fiQ7Iq58Bzh2Ae4C.cn, xn--fiQ7Iq58Bzh2Ae4C.xn--55Qx5D, www.xn--fiQ7Iq58Bzh2Ae4C.xn--55Qx5D, xn--fiQA61Au8B7zSevNm8Ak20Mc4A87E.cn, www.xn--fiQA61Au8B7zSevNm8Ak20Mc4A87E.cn, xn--fiQA61Au8B7zSevNm8Ak20Mc4A87E.xn--fiQs8S, www.xn--fiQA61Au8B7zSevNm8Ak20Mc4A87E.xn--fiQs8S

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

57 internal · 7 external · 4 broken

Images

29 total · 11 missing alt

Scripts / Styles

15 scripts · 3 stylesheets

JS / CSS size

228 KB · 101 KB

Page size

28.0 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
21
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

  • More than 20% of images are missing alt text
  • No H1 heading found

Scan details

Requested URL
https://cnnic.net.cn
Final URL
https://www.cnnic.cn/
HTTP status
200
HTTP version
HTTP/1.1
Response time
736 ms
HTML size
28.0 KB
Redirect chain
https://cnnic.net.cn → http://www.cnnic.cn/ → https://www.cnnic.cn/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does cnnic.net.cn use?
cnnic.net.cn is built with jQuery, Nginx.
Is cnnic.net.cn secure (HTTPS)?
Yes. cnnic.net.cn uses TLS 1.2 with a certificate issued by DigiCert, Inc., valid until Nov 27, 2026.
Who hosts cnnic.net.cn?
cnnic.net.cn is hosted on CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN.
What is cnnic.net.cn's SEO score?
cnnic.net.cn scored 55/100 for SEO in the latest analysis (fair).
What is cnnic.net.cn's overall website score?
cnnic.net.cn has an overall SiteGraph score of 73/100, combining SEO, performance, security, and accessibility.