jeffgeerling.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 4310 ms crawled 2026-05-19

US · 172.67.198.119 · AS13335 Cloudflare, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title

Jeff Geerling | Home

Feeds

Jeff Geerling RSS

Open Graph

url: https://www.jeffgeerling.com/
title: Jeff Geerling
locale: en_us
site name: Jeff Geerling

Technology

CDN: Cloudflare

Social

Registration

Registrar

Name.com, Inc.

Created

2009-01-19

Expires

2027-01-19 243 days left

Updated

2026-01-15

Name servers

ishaan.ns.cloudflare.com
magali.ns.cloudflare.com

DNS records live

NS

ishaan.ns.cloudflare.com
magali.ns.cloudflare.com

MX

10 in1-smtp.messagingengine.com
20 in2-smtp.messagingengine.com

TXT

keybase-site-verification=hojRTnMAaDGPVErsHOwcOtbcTI13wyguW0jOW2Oaers

Verified for

Brave
Google

Email authentication partial

SPF: v=spf1 include:spf.messagingengine.com ?all
neutral (?all)
DMARC: v=DMARC1; p=none;
policy: none (monitoring only)
DKIM: no key found at common selectors

Certificate (current)

WE1

from 2026-04-04 to 2026-07-03

Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.jeffgeerling.com/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy