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SGSiteGraph

sdo.support

502 Bad Gateway

Last scanned Aug 24, 2026, 1:22 PM

66

Overall score

Fair

Summary

This website uses Nginx hosted on SEVEREN-TELECOM_TRANSIT - JSC _Severen-Telecom_, RU. SEO is fair (60/100) and accessibility is good (85/100). Security scores poor (25/100) and performance excellent (100/100). Top issue: Missing meta description.

Russia
Hosted on SEVEREN-TELECOM_TRANSIT - JSC _Severen-Telecom_, RU

Top issues to fix

13 issues found · 5 high priority

  • TLS certificate expires in -1698 days

    Security

    Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.

  • 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.

  • 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 X-Content-Type-Options header

    Security

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

+7 more issues — details in the sections below.

60

SEO

6 issue(s) found

100

Performance

870 ms

25

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
502 Bad Gateway
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.

Nginx

Hosting & CDN

CDN provider
—
IP address
212.116.122.75
ASN
AS35000 (SEVEREN-TELECOM_TRANSIT - JSC _Severen-Telecom_, RU)

DNS records

TypeValue
A
  • 212.116.122.75
AAAA—
MX
  • mx.sdo.support
TXT
  • _globalsign-domain-verification=-d9BJ0-rII957O0k64pxlX_A3PfvbmdX1Y4cjTK7Am
  • _globalsign-domain-verification=XGon5nCKfLE1COoMt9aQvV313GphFChJSSJivoql7d
  • _globalsign-domain-verification=cgrpew3eDGl64lTWhlPaQbWK6P7hjkJoZRaI08Ax0G
  • _globalsign-domain-verification=BqtccS87kCnMLfmEUfEPKXPcm-9q8Wx9MZpc3TurEN
  • v=spf1 ip4:212.116.122.75 ip4:192.168.77.0/24 ip4:10.10.122.0/24 a mx include:_spf.mail.ru +a +mx ~all
NS
  • ns2.yandexcloud.net
  • ns1.yandexcloud.net
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
git.sdo.support
Valid from
Oct 1, 2021
Valid to
Dec 30, 2021
Days until expiry
-1698
SAN domains
git.sdo.support

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 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

157 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://sdo.support
Final URL
https://sdo.support
HTTP status
502
HTTP version
HTTP/2
Response time
870 ms
HTML size
157 B
Redirect chain
https://sdo.support

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sdo.support use?
sdo.support is built with Nginx.
Is sdo.support secure (HTTPS)?
Yes. sdo.support uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Dec 30, 2021.
Who hosts sdo.support?
sdo.support is hosted on SEVEREN-TELECOM_TRANSIT - JSC _Severen-Telecom_, RU.
What is sdo.support's SEO score?
sdo.support scored 60/100 for SEO in the latest analysis (fair).
What is sdo.support's overall website score?
sdo.support has an overall SiteGraph score of 66/100, combining SEO, performance, security, and accessibility.