indexo.dev

gjfr.dev

.dev crawl

First seen 2026-06-04 · Last seen 2026-06-04 · ok HTTP/1.1 200 206 ms crawled 2026-06-04

FR · 194.163.139.46 · AS51167 Contabo GmbH

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
Gertjan Franken
Language
en

Technology

Server
nginx

Social

DNS records live

NS
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com
MX
  • 10 mx01.mail.icloud.com
  • 10 mx02.mail.icloud.com
TXT
  • apple-domain=xPkDW5g0PdZ1pQhA

Email authentication weak

SPF
v=spf1 include:icloud.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-05-10 to 2026-08-08
Expires in 59 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://gjfr.dev/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • referrer-policy
  • permissions-policy
findings
  • CSP uses wildcard sources
  • missing content type protection
Header values
referrer-policy
no-referrer
x-frame-options
sameorigin
permissions-policy
interest-cohort=()
content-security-policy
default-src 'self' *.gjfr.dev *.gertjan.fr
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (5)

Linked from (2)

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