indexo.dev

c1sinc.com

.com crawl

First seen 2026-04-20 · Last seen 2026-05-11 · ok HTTP/1.1 200 900 ms crawled 2026-05-14

US · 104.21.74.27 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
C1S Group | Industrial and Commercial Renovation Solutions
Description
Engineering, construction, commissioning, and consulting. C1S works with everyone from Fortune 1000 companies to local businesses.
Language
en

Open Graph

title
C1S Group | Industrial and Commercial Renovation Solutions
description
Engineering, construction, commissioning, and consulting. C1S works with everyone from Fortune 1000 companies to local businesses.

Technology

CDN
Cloudflare
CMS
Next.js

Social

Contact

Phone
Address
4231 Sigma Road, Suite 110, 75244, Dallas, TX, US

Registration

Registrar
GoDaddy.com, LLC
Created
2002-10-28
Expires
2030-10-28 1621 days left
Updated
2025-10-29
Name servers
  • karina.ns.cloudflare.com
  • kevin.ns.cloudflare.com

DNS records live

NS
  • karina.ns.cloudflare.com
  • kevin.ns.cloudflare.com
MX
  • 0 d257056a.ess.barracudanetworks.com
  • 0 d257056b.ess.barracudanetworks.com
TXT
  • intacct-esk=C709C7F23F86DF10E0539A220D0A46DC
  • lu698pv7chsp8etp3lpvpa1ll8
  • pkqjsv06v7ao4a51693euorn8c
Verified for
  • Apple
  • Google
  • Microsoft 365

Email authentication strong

SPF
v=spf1 ip4:12.68.152.10 ip4:184.168.200.138 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:_spf.intacct.com -all
strict (-all)
DMARC
v=DMARC1; p=reject; fo=1; rua=mailto:rua+c1sinc.com@dmarc.barracudanetworks.com; ruf=mailto:ruf+c1sinc.com@dmarc.barracudanetworks.com
policy: reject (enforced)
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDAeh5tgjcHD9+ujtf6EjZvE50R5xq+fVgxckJx86Bzom5p3fzipxoF0LH863sI43rLc/V7usQ3AVI/zr5V5S…
  • smtpapi: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76…
selectors probed

Certificate (current)

WE1
from 2026-04-27 to 2026-07-26
Expires in 67 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://c1sinc.com/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=63072000

Links to (4)

Linked from (1)