concretecms.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 4243 ms crawled 2026-05-18

US · 52.203.230.143 · AS14618 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: Concrete CMS is a Free and Open Source Content Management System for Teams
Description: Concrete CMS is an open source content management system for teams. A website builder with built in tools make editing content easy.
Language: en
Generator: Concrete CMS
Canonical: https://www.concretecms.com/

Open Graph

url: https://www.concretecms.com/
title: Home

Technology

CDN: Amazon CloudFront
Server: nginx

Analytics

Google Analytics
Google Tag Manager

Third-party hosts loaded (2)

www.google-analytics.com×1
www.googletagmanager.com×1

Social

Registration

Registrar

Amazon Registrar, Inc.

Created

2004-02-26

Expires

2027-02-26 282 days left

Updated

2026-05-15

Name servers

ns-1132.awsdns-13.org
ns-179.awsdns-22.com
ns-1903.awsdns-45.co.uk
ns-637.awsdns-15.net

DNS records live

NS

ns-1132.awsdns-13.org
ns-179.awsdns-22.com
ns-1903.awsdns-45.co.uk
ns-637.awsdns-15.net

MX

Show 7 MX records

10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com
30 aspmx4.googlemail.com
30 aspmx5.googlemail.com

TXT

google-site-verification=JMOYqUCoqEzIcpFzfoM1-MuHB3SvkFcZn1e3NGPI6U8
atlassian-domain-verification=5OfTpmQZE7oXK6zl4VZ6MuaxGpIFTf/HpnU/A54Am77TgxahbI5ZRdM4/KW03Xib

Email authentication strong

SPF

v=spf1 include:_spf.google.com include:amazonses.com include:sendgrid.net include:9394323.spf04.hubspotemail.net include:_spf.createsend.com ip4:50.28.51.62 ip4:209.85.220.73 -all

strict (-all)

DMARC

v=DMARC1;p=reject;rua=mailto:itops@portlandlabs.com;ruf=mailto:itops@portlandlabs.com

policy: reject (enforced)

DKIM

google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDA09DE1Rso55CdfYl6FS/mh+fLtJdkLvQFiegnqB9SqkbJjg2zf5nNPZsd1BeWOJTX1gitM/OIZ0cl26adJL…

selectors probed

Certificate (current)

R12

from 2026-04-17 to 2026-07-16

Expires in 58 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present

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

findings

missing Content Security Policy
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: sameorigin
x-content-type-options: nosniff
strict-transport-security: max-age=31536000