What technology does nll.red use?

nll.red is built with Meta Pixel, Apache.

Is nll.red secure (HTTPS)?

Yes. nll.red uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 22, 2026.

Hosting provider information for nll.red is not available yet.

What is nll.red's SEO score?

nll.red scored 65/100 for SEO in the latest analysis (fair).

What is nll.red's overall website score?

nll.red has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.

nll.red

新・ネットレの学習教室【無料】

Last scanned Jul 26, 2026, 12:49 PM

Overall score

Fair

Summary

中学生や小学生がネット(オンライン)で自学自習できる勉強･学習webページ。. This website uses Apache. SEO is fair (65/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.

中学生や小学生がネット(オンライン)で自学自習できる勉強･学習webページ。

Top issues to fix

13 issues found · 3 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.
Over half of images are missing alt text
Accessibility
Add alt attributes to images — screen readers depend on them, and they help image SEO.
TLS certificate expires in 24 days
Security
Renew soon or enable auto-renewal to avoid a browser-warning outage.
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.

+7 more issues — details in the sections below.

SEO

6 issue(s) found

100

Performance

133 ms

Security

HTTPS & header checks

Accessibility

1 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.

Organization

Company details published in this site's own structured data.

中学生や小学生がネット(オンライン)で自学自習できる勉強･学習webページ。

Meta tags

Title: 新・ネットレの学習教室【無料】
Description: 中学生や小学生がネット(オンライン)で自学自習できる勉強･学習webページ。
Canonical
Language: ja
Charset: UTF-8
Viewport: width=device-width, user-scalable=yes, initial-scale=1, maximum-scale=2
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Meta Pixel Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: nll.red
Valid from: May 24, 2026
Valid to: Aug 22, 2026
Days until expiry: 24
SAN domains: nll.red, www.nll.red

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 4 · H2 0 · H3 0

Links

50 internal · 1 external · 20 broken

Images

20 total · 17 missing alt

Scripts / Styles

1 scripts · 0 stylesheets

JS / CSS size

4.4 KB · 7.0 KB

Page size

30.6 KB

Robots.txt & Sitemap

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

SEO issues

Missing canonical link
Multiple H1 headings found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://nll.red
Final URL: https://nll.red
HTTP status: 200
HTTP version: HTTP/2
Response time: 133 ms
HTML size: 30.6 KB
Redirect chain: https://nll.red

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does nll.red use?: nll.red is built with Meta Pixel, Apache.
Is nll.red secure (HTTPS)?: Yes. nll.red uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 22, 2026.
Who hosts nll.red?: Hosting provider information for nll.red is not available yet.
What is nll.red's SEO score?: nll.red scored 65/100 for SEO in the latest analysis (fair).
What is nll.red's overall website score?: nll.red has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.

Top issues to fix

Organization

Meta tags

OpenGraph & Twitter Card

Technologies

Hosting & CDN

DNS records

TLS / SSL certificate

Security headers

Content & assets

Robots.txt & Sitemap

SEO issues

Accessibility issues

Scan details

Related websites

Frequently asked questions