bollinger-grohmann.com

.com crawl

First seen 2026-04-23 · Last seen 2026-05-20 · ok HTTP/1.1 200 8460 ms crawled 2026-05-17

FR · 92.205.166.160 · AS21499 Host Europe GmbH

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: Bollinger+Grohmann
Description: Engineers driven by passion for high-quality architecture and innovative solutions.
Language: en
Canonical: https://www.bollinger-grohmann.com/

Open Graph

url: https://www.bollinger-grohmann.com/
title: Bollinger+Grohmann
description: Engineers driven by passion for high-quality architecture and innovative solutions.

Technology

Server: nginx

Registration

Registrar

IONOS SE

Created

2007-05-03

Expires

2027-05-03 347 days left

Updated

2026-05-04

Name servers

ns1057.ui-dns.biz
ns1057.ui-dns.com
ns1057.ui-dns.de
ns1057.ui-dns.org

DNS records live

NS

ns1057.ui-dns.biz
ns1057.ui-dns.com
ns1057.ui-dns.de
ns1057.ui-dns.org

MX

10 nospam-fra-001.germanywestcentral.cloudapp.azure.com

TXT

Show 4 TXT records

v=verifydomain MS=3596430
OzhoWsKr+EE5PqJGJuSMppkEi3WBM3p0pDZ0Xg7fQUTF32kacVmv1ZSW6dEIx5Io6sF8y/vDmyQndlZX5Kv6ng==
sophos-domain-verification=8c9547f944af0ac86661273265ba4ae3424880e7
bghcmgd7adc164ehaqjoreamsd

Verified for

Apple
Google
Miro

Email authentication partial

SPF: v=spf1 a mx include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.proxy.nospamproxy.com ip4:87.106.190.138 ~all
softfail (~all)
DMARC: v=DMARC1; p=none;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-05-07 to 2026-08-05

Expires in 77 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.bollinger-grohmann.com/

present

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

findings

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=15768000; includeSubDomains