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SGSiteGraph

edudns-c2.edu.tw

403 Forbidden

Last scanned Jul 26, 2026, 5:18 AM

73

Overall score

Fair

Summary

This website uses Apache hosted on ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center, TW. SEO is fair (60/100) and accessibility is good (85/100). Security scores fair (60/100) and performance excellent (90/100). Top issue: Missing meta description.

Taiwan
Hosted on ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center, TW

Top issues to fix

8 issues found · 2 high priority

  • Missing meta description

    SEO

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

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

60

SEO

6 issue(s) found

90

Performance

1.43 s

60

Security

HTTPS & header checks

85

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
403 Forbidden
Description
Canonical
Language
Charset
Viewport
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.

Apache

Hosting & CDN

CDN provider
—
IP address
140.111.233.4
ASN
AS1659 (ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center, TW)

DNS records

TypeValue
A
  • 140.111.233.4
AAAA
  • 2001:288:0:233::4
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Infoblox
Subject
edudns-c2.edu.tw
Valid from
Jul 8, 2026
Valid to
Jul 8, 2027
Days until expiry
346
SAN domains
edudns-c2.edu.tw

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

0 scripts · 0 stylesheets

JS / CSS size

0 B · 0 B

Page size

199 B

Robots.txt & Sitemap

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

SEO issues

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

Accessibility issues

  • Missing <html lang> attribute
  • Missing viewport meta tag

Scan details

Requested URL
https://edudns-c2.edu.tw
Final URL
https://edudns-c2.edu.tw
HTTP status
403
HTTP version
HTTP/1.1
Response time
1.43 s
HTML size
199 B
Redirect chain
https://edudns-c2.edu.tw

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does edudns-c2.edu.tw use?
edudns-c2.edu.tw is built with Apache.
Is edudns-c2.edu.tw secure (HTTPS)?
Yes. edudns-c2.edu.tw uses TLS 1.3 with a certificate issued by Infoblox, valid until Jul 8, 2027.
Who hosts edudns-c2.edu.tw?
edudns-c2.edu.tw is hosted on ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center, TW.
What is edudns-c2.edu.tw's SEO score?
edudns-c2.edu.tw scored 60/100 for SEO in the latest analysis (fair).
What is edudns-c2.edu.tw's overall website score?
edudns-c2.edu.tw has an overall SiteGraph score of 73/100, combining SEO, performance, security, and accessibility.