is4s.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 13331 ms crawled 2026-05-19

US · 198.185.159.144 · AS53831 Squarespace, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: IS4S
Description: Integrated Solutions for Systems (IS4S) is a dynamic engineering and management company supporting hundreds of government and commercial customers across the United States.
Language: en-US
Canonical: https://www.is4s.com

Open Graph

url: https://www.is4s.com
title: IS4S
site name: IS4S
description: Integrated Solutions for Systems (IS4S) is a dynamic engineering and management company supporting hundreds of government and commercial customers across the United States.

Technology

Server: Squarespace
CMS: Squarespace

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (9)

definitions.sqspcdn.com×17
assets.squarespace.com×10
images.squarespace-cdn.com×7
static1.squarespace.com×5
www.googletagmanager.com×2
ajax.googleapis.com×1
fonts.googleapis.com×1
fonts.gstatic.com×1
secure5.entertimeonline.com×1

Social

Contact

Phone

Registration

Registrar

GoDaddy.com, LLC

Created

2008-01-04

Expires

2034-01-04 2786 days left

Updated

2025-01-04

Name servers

ns55.domaincontrol.com
ns56.domaincontrol.com

DNS records live

NS

ns55.domaincontrol.com
ns56.domaincontrol.com

MX

0 is4sinc.mail.protection.office365.us

TXT

Show 9 TXT records

x65fws2h9dwxqwvry3kf9d1jb6fpn4bj
MS=ms38084797
google-site-verification=WR1X1P3CEkZ_73Q6qu1L2FqJWnNPr9kJS3PipPoBQAI
have-i-been-pwned-verification=38f1ec1f8fe76f7962907455399e80f3
hibp-verify=dweb_9o4uj0vtxh3lmfouutvd5f2v
apple-domain-verification=aKRORN7pkvjgAHY6
adobe-idp-site-verification=9e6f680bb7ba6cea0fcad31bfa95b939d5118d0451c499b6ca465cc60de31f4f
_8x68zmi8vd2skz0okkony56oeqh4gh0
google-site-verification=GZbEBWdXIMAqhWGGQpG7vgd7uRhBYkoliF9To-0r8Ac

Email authentication partial

SPF

v=spf1 include:spf.protection.office365.us -all

strict (-all)

DMARC

v=DMARC1; p=none; pct=100; rua=mailto:dmarcreports@is4s.com; ruf=mailto:dmarcreports@is4s.com; fo=1

policy: none (monitoring only)

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAurS0X/HyMg3s4TOzC0lFECHleKJ+iPA90wpIheAMq1g173ZE9383qJZCI1UKKKrN3OvkT43pgMyArG…
selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxHxATr+3ULe9zoY6URofu1FxMz28I/GhEWZTjG+hOOgQzvlKLKOWhBKJlapijsahqCvXzDCHcHlA2c…

selectors probed

Certificate (current)

R12

from 2026-03-22 to 2026-06-20

Expires in 32 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 65/100 Checked live page: https://www.is4s.com/

present

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

findings

missing Content Security Policy
weak frame protection
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: SAMEORIGIN, SAMEORIGIN
x-content-type-options: nosniff
strict-transport-security: max-age=15552000