indexo.dev

mastercourses.dev

.dev crawl

First seen 2026-05-28 · Last seen 2026-05-31 · ok HTTP/1.1 200 1133 ms crawled 2026-05-31

PL · 5.252.230.199 · AS203417 LH.pl Sp. z o.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
MasterCourses.dev
Language
en

Technology

Server
Apache

Contact

Phone

DNS records live

NS
  • ns.lh.pl
  • ns2.lighthosting.net
MX
  • 5 mail11.lh.pl

Email authentication strong

SPF
v=spf1 include:_spf.mlsend.com include:_spf.lh.pl -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarc-report@lh.pl;
policy: quarantine
DKIM
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxtChfLR5zfPlY/iYiW3feaU+CVhUPTT3epAcGiVAhpDFAx0EIztJXP+sSr/clNdpwHS/tqEdFwRRyb…
selectors probed

Certificate (current)

R12
from 2026-04-11 to 2026-07-10
Expires in 39 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://mastercourses.dev/live/

present
  • x-frame-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
sameorigin

Linked from (3)