zestor.nl

.nl crawl

First seen 2026-05-28 · Last seen 2026-05-28 · ok HTTP/1.1 200 327 ms crawled 2026-05-31

NL · 178.22.57.110 · AS12859 BIT BV

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Zestor – Zestor
Description: Zestor ondersteunt hogescholen (werkgevers en werknemers) op het gebied van arbeidsmarktbeleid, leren & ontwikkelen en gezond, veilig en vitaal werken.
Canonical: https://zestor.nl/

Open Graph

url: https://zestor.nl/
locale: nl_NL

Technology

Server: nginx

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

Contact

Email

info@zestor.nl

Phone

/+31620652018

DNS records live

NS

ns1.as41887.nl
ns2.as41887.eu
ns3.as41887.io
ns4.as41887.it

MX

10 zestor-nl.mail.protection.outlook.com

Verified for

Adobe
Zoom

Email authentication strong

SPF

v=spf1 a ip4:95.128.93.170 ip4:95.128.93.185 ip4:5.100.228.43 ip4:217.195.122.206 ip4:78.31.117.32 ip4:217.195.122.194 ip4:212.204.207.3 ip4:5.100.228.43 ip4:217.100.3.50 ip4:94.228.133.0/24 include:spf.protection.outlook.com include:_spf.exonet.nl  include:spf.geenspam.mx ~all

softfail (~all)

DMARC

v=DMARC1; p=quarantine; rua=mailto:dmarc@verhog.uriports.com; ruf=mailto:dmarc@verhog.uriports.com; fo=1:d:s

policy: quarantine

DKIM

selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCw3K4ObaRksLywT7+orGl6EaF8J5EQFZFBHfrx0HUBNkKPHCzbnMey77itca4PzougMTahKTlmQo9QVyUWEn…
k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…

selectors probed

Certificate (current)

R12

from 2026-03-30 to 2026-06-28

Expires in 28 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://zestor.nl/

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

Links to (10)

Linked from (1)

maaikemiedema.nl×1