systemsrearchitected.com

.com crawl

First seen 2026-04-22 · Last seen 2026-05-16 · ok HTTP/1.1 200 8482 ms crawled 2026-05-16

US · 75.2.60.5 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: Systems ReArchitected: Intelligent Systems Design
Language: en

Technology

CDN: Netlify

Analytics

Google Tag Manager

Third-party hosts loaded (2)

res.cloudinary.com×8
www.googletagmanager.com×1

Registration

Registrar

Cloudflare, Inc.

Created

2025-02-10

Expires

2027-02-10 265 days left

Updated

2025-02-10

Name servers

harlee.ns.cloudflare.com
kaiser.ns.cloudflare.com

DNS records live

NS

harlee.ns.cloudflare.com
kaiser.ns.cloudflare.com

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

canva-domain-verify=d9959158-3b03-4dcd-accc-f3d7c026f21c

Verified for

Google

Email authentication partial

SPF: v=spf1 include:_spf.google.com include:ckespa.systemsrearchitected.com -all
strict (-all)
DMARC: v=DMARC1; p=none; rua=mailto:dmarc@systemsrearchitected.com; adkim=s; aspf=s; pct=100
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

from 2026-04-19 to 2026-07-18

Expires in 58 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://systemsrearchitected.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=31536000