sferia.cz

.cz crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 557 ms crawled 2026-06-01

DE · 3.120.81.58 · AS16509 Amazon.com, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Spolehlivý internet a digitální služby - sferia.cz
Language: cs
Canonical: https://www.sferia.cz/

Open Graph

url: https://www.sferia.cz/
title: Spolehlivý internet a digitální služby - sferia.cz
locale: cs_CZ
updated time: 2026-02-17T16:09:23+01:00

Technology

Server: nginx
CMS: WordPress
PHP: 8.4.21

Contact

Email

podpora@sferia.cz

Phone

+420480000000

DNS records live

NS

ns1.sferia.cz
ns2.sferia.cz

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Verified for

Google

Email authentication strong

SPF

v=spf1 include:_spf.google.com -all

strict (-all)

DMARC

v=DMARC1; p=reject

policy: reject (enforced)

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjnFN9lGqqIUBRAuU2GTuSlevkv6/Kl1HnsDpGwWidDEQiRY6bZmFm7JGw0H2fC3C9Ie0D7YfY116eE…

selectors probed

Certificate (current)

R13

from 2026-04-16 to 2026-07-15

Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.sferia.cz/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Links to (5)

Linked from (1)

itcom.cz×1