sofatutor.com

.com crawl

First seen 2026-04-30 · Last seen 2026-05-15 · ok HTTP/1.1 200 4081 ms crawled 2026-05-08

US · 3.174.113.18 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title

sofatutor: Mit Spaß lernen von der 1.-13. Klasse

Description

Deine Online-Lernhilfe mit kurzen & witzigen Erklärvideos, Übungen & Arbeitsblättern ► Jetzt kostenlos ausprobieren! Für alle Fächer & Klassen

Language

de-DE

Canonical

https://www.sofatutor.com

Translations

de
de-at
de-ch
en
en-gb

Open Graph

url: https://www.sofatutor.com/
title: Mit Spaß lernen und Noten verbessern | sofatutor.com
site name: sofatutor.com
description: Die Online-Lernplattform sofatutor.com veranschaulicht in 8.330 Lernvideos den gesamten Schulstoff. Interaktive Übungsaufgaben zu jedem Video, ausdruckbare Arbeitsblätter und ein täglicher Hausaufgaben-Chat mit Expert*innen garantieren einen Rundum-Service.

Technology

Server: nginx

Analytics

Google Tag Manager

Third-party hosts loaded (5)

assets.production.cdn.sofatutor.net×94
www.googletagmanager.com×2
www.sofatutor.at×1
www.sofatutor.ch×1
www.sofatutor.co.uk×1

Social

Contact

Email

Registration

Registrar

Key-Systems GmbH

Created

2007-07-02

Expires

2026-07-02 44 days left

Updated

2025-11-25

Name servers

ns-10.awsdns-01.com
ns-1471.awsdns-55.org
ns-1808.awsdns-34.co.uk
ns-651.awsdns-17.net

DNS records live

NS

ns-10.awsdns-01.com
ns-1471.awsdns-55.org
ns-1808.awsdns-34.co.uk
ns-651.awsdns-17.net

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

TXT

Show 5 TXT records

G8PziX2vCaBn2UXEv5+Eb2GL6H14s4EPiR5dyWck6Ro=
apple-domain-verification=XxOpPzFnfa9m5Nn4
google-site-verification=AM061eb6o4A9Y-LB6ta1E4i3w79Nq2jv7-yvN2f3z10
stripe-verification=7a0e7d2fa17bd562f39aa666713a91e143eca8519650930e4d1972b371e21af7
stripe-verification=9f4e7188e5c8ee9be59d0af66c0f92eb9209bc269b7569a667e95a7faf4a9209

Email authentication partial

SPF

v=spf1 include:_spf.google.com include:sendgrid.net include:spf.easybill-mail.de include:amazonses.com ~all

softfail (~all)

DMARC

v=DMARC1; p=none; rua=mailto:dmarc@sofatutor.uriports.com; ruf=mailto:dmarc@sofatutor.uriports.com; fo=1:d:s

policy: none (monitoring only)

DKIM

google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7g23L2LF2ZtwXDprFF6by/yNhrmR12xjaJ3O6kZsuE1DzhNZNsvtwPQ/7EOlxa4XxO+AZmvKzt8Vv2ylF8C…
smtpapi: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76…

selectors probed

Certificate (current)

Amazon RSA 2048 M04

from 2025-06-17 to 2026-07-17

Expires in 59 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present

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

findings

short HSTS max-age
missing Content Security Policy
missing Permissions Policy

Header values

referrer-policy: strict-origin-when-cross-origin
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
strict-transport-security: max-age=0; includeSubDomains