indexo.dev

rk.edu.pl

.pl crawl

First seen 2026-06-03 · Last seen 2026-06-04 · ok HTTP/1.1 200 501 ms crawled 2026-06-03

PL · 213.189.56.206 · AS57367 Atman Sp. z o.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
RkBlog :: Hardware, programming and astronomy
Description
Hardware, programming and astronomy tutorials and reviews.
Language
en
Feeds

Technology

Server
nginx
CMS
Gatsby
Analytics
  • Google Tag Manager

Third-party hosts loaded (1)

  • www.googletagmanager.com×1

DNS records live

NS
  • dns1.mydevil.net
  • dns2.mydevil.net
MX
  • 10 mail26.mydevil.net

Email authentication weak

SPF
v=spf1 mx a include:mail26.mydevil.net -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

YR2
from 2026-05-30 to 2026-08-28
Expires in 84 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://rk.edu.pl/

present
  • x-content-type-options
  • referrer-policy
  • cross-origin-opener-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Permissions Policy
Header values
referrer-policy
same-origin
x-content-type-options
nosniff
cross-origin-opener-policy
same-origin

Links to (1)

Linked from (2)

Use this data via API

Everything on this page for rk.edu.pl is available as JSON from the indexo.dev REST & MCP API.

curl "https://indexo.dev/api/v1/domains/rk.edu.pl" \
  -H "X-API-Key: idx_..."

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