estrel.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 4549 ms crawled 2026-05-18

DE · 91.250.67.43 · AS20773 Host Europe GmbH

Reputation 100/100

Classifying

HTML metadata

Title

Welcome – Estrel Berlin

Language

Generator

Contao Open Source CMS

Translations

Technology

Server: Apache

Analytics

Google Tag Manager

Third-party hosts loaded (1)

www.googletagmanager.com×1

Social

Registration

Registrar

united-domains GmbH

Created

1996-11-08

Expires

2026-11-07 172 days left

Updated

2026-04-01

Name servers

ns.udag.de
ns.udag.net
ns.udag.org

DNS records live

NS

ns.udag.de
ns.udag.net
ns.udag.org

MX

0 estrel-com.mail.protection.outlook.com

TXT

4wsILMzZb2WagHx6xT/psVH8z5XrqwzkWALzaqMjNjU=
domainsecurity-verification=ac3c5e83cc18d32cbc2b8ed1b808d04086969e86
sophos-domain-verification=5e917c28b5b2ff9e07c53204d9b2b86f463d6a6faf65ad6a31c1d55457d9d4af

Email authentication strong

SPF

v=spf1 include:spf.protection.outlook.com include:spfa.estrel.com include:_spf.travelclick.com include:reservision.com include:spf-de.emailsignatures365.com include:_spf.zimpel.de -all

strict (-all)

DMARC

v=DMARC1; p=reject; rua=mailto:it@estrel.com,mailto:dmarc@reports.nicmanager.net; ruf=mailto:it@estrel.com; fo=0;

policy: reject (enforced)

DKIM

selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDIxtukqrqtKdQ+9yb6izfaO/vNgZWUoWMd7BZgXIIOrURqOv4uKHprH2IvTroqAw9wG6IyzrGucGT5BoMQqo…

selectors probed

Certificate (current)

Starfield Secure Certificate Authority - G2

from 2025-08-05 to 2026-09-04

Expires in 108 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.estrel.com/en/

present

strict-transport-security
x-frame-options
x-content-type-options
referrer-policy
permissions-policy

findings

missing Content Security Policy
weak frame protection

Header values

referrer-policy: no-referrer-when-downgrade, strict-origin-when-cross-origin
x-frame-options: allow-from https://app.straiv.io, SAMEORIGIN
permissions-policy: interest-cohort=()
x-content-type-options: nosniff
strict-transport-security: max-age=31536000