isp21.cz
HTML metadata
Technology
- Server
- openresty
- CMS
- Joomla
- Analytics
-
- Google Tag Manager
- Fonts
-
- Google Fonts
Third-party hosts loaded (5)
- cdn.onesignal.com×1
- fonts.googleapis.com×1
- s7.addthis.com×1
- static.mailerlite.com×1
- www.googletagmanager.com×1
Social
Registration
- Registrar
- REG-ACTIVE24
- Created
- 2017-08-02
- Expires
- 2027-08-01 424 days left
- Updated
- 2026-03-19
- Name servers
-
- ns1.websupport.cz
- ns2.websupport.cz
- ns3.websupport.eu
DNS records live
- NS
-
- ns1.websupport.cz
- ns2.websupport.cz
- ns3.websupport.eu
- MX
-
- 10 mailin1.isp21.cz
- 100 mailin2.isp21.cz
- Verified for
-
- Meta
Email authentication weak
- SPF
-
v=spf1 a mx include:_spf.mlsend.com include:_spf.m1.websupport.sk ?allneutral (?all) - DMARC
- not published
- DKIM
-
- mail:
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtcEL8+ne0gbGwALUuNmO8U+rWqdWaUibHPhEsZOmF/n28eebbDjhCjSCvtEam48IGsMp1rUUNBPZW/…
selectors probed - mail:
Certificate (current)
R12
Expires in 72 days
HTTP security headers
- present
-
- content-security-policy
- findings
-
- missing HSTS
- missing frame protection
- missing content type protection
- missing Referrer Policy
- missing Permissions Policy
Header values
- content-security-policy
upgrade-insecure-requests
Links to (4)
- twitter.com×1
- facebook.com×1
- esfcr.cz×1
- ergotep.cz×1