indexo.dev

jonasholfeld.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-13 · ok HTTP/1.1 200 2500 ms crawled 2026-05-10

DE · 185.26.156.50 · AS58010 uvensys GmbH

Reputation 100/100

Classifying

HTML metadata

Title
Jonas Holfeld
Description
Jonas Holfeld Web Development

Technology

Server
nginx

Third-party hosts loaded (1)

  • ajax.googleapis.com×1

Social

Contact

Email

Registration

Registrar
Cronon GmbH
Created
2023-01-04
Expires
2027-01-04 230 days left
Updated
2026-01-05
Name servers
  • docks12.rzone.de
  • shades01.rzone.de

DNS records live

NS
  • docks12.rzone.de
  • shades01.rzone.de
MX
  • 5 smtpin.rzone.de

Email authentication strong

SPF
not published
DMARC
v=DMARC1;p=reject;
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-01 to 2026-06-30
Expires in 42 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://jonasholfeld.com/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing Content Security Policy
  • weak frame protection
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
ALLOW
x-content-type-options
nosniff
strict-transport-security
max-age=31536000

Links to (32)

Linked from (6)