markmeldrum.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-14 · ok HTTP/1.1 200 1619 ms crawled 2026-05-10

US · 13.33.235.62 · AS16509 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: Mark Meldrum, Ph.D
Language: en-US
Generator: Redux 4.4.11
Canonical: https://www.markmeldrum.com/

Technology

CDN: Amazon CloudFront
Server: nginx
CMS: WordPress

Analytics

Google Tag Manager

Third-party hosts loaded (5)

cdn.jsdelivr.net×2
cdnjs.cloudflare.com×2
stackpath.bootstrapcdn.com×2
gmpg.org×1
www.googletagmanager.com×1

Social

Registration

Registrar

Amazon Registrar, Inc.

Created

2017-05-12

Expires

2027-05-12 357 days left

Updated

2026-04-07

Name servers

ns-1326.awsdns-37.org
ns-1880.awsdns-43.co.uk
ns-481.awsdns-60.com
ns-626.awsdns-14.net

DNS records live

NS

ns-1326.awsdns-37.org
ns-1880.awsdns-43.co.uk
ns-481.awsdns-60.com
ns-626.awsdns-14.net

MX

10 d273883a.ess.barracudanetworks.com
20 d273883b.ess.barracudanetworks.com

TXT

Show 6 TXT records

knowbe4-site-verification=031f1fd7020f1729afba7e8c8e3c8ab5
pardot837113=536b0721d03b041362550952a33ad95b5aa5399a39af2595b3dbe9772439d5d9
00D60000000J4Mx=1TBVX00000000OD
MS=ms72687245
atlassian-domain-verification=aOykxsga7EtZd4bCuNMOrl804gysaCbK1WHNtUnQcZeH5B70gbP7Ye9inSfaI2Y/
google-site-verification=z96l8eKPSshncRPCbnM4e1J_amtFZuAwHrI6gFFmpSI

Email authentication partial

SPF

v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:sendgrid.net include:aspmx.pardot.com -all

strict (-all)

DMARC

v=DMARC1; p=none; fo=1; rua=mailto:dmarc-noreply@markmeldrum.com,mailto:rua+markmeldrum.com@dmarc.barracudanetworks.com, mailto:dmarc_agg@vali.email; ruf=mailto:ruf+markmeldrum.com@dmarc.barracudanetworks.com

policy: none (monitoring only)

DKIM

Show 4 DKIM selectors

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmA3QksVTgxhpATrzI91Ni5Mt5QPKA65KnIw1HmGCm6n6yY7mpUC4j2rgpYzeQnTHszdJqi62VQV8jJ…
selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvBe1fQ6MOZkz7JwIXyLjo9S9viWYkm41nL1mI4WvZdkU1J0Nh3WIFhPJAQvcgghxEfTLRZxdK3dzue…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxvmkcuUAJibHdT8LJEPYUhRt1Jz8NvR/GNVu/BuGmV7JoPoxPzDSVVMqPqqatlxZGTPLCKTHyU8n9mrC6Z…
s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCyBqz5ozuQRykxAGp2N19W+l2qTVMgxz5Vs9tAQjzEwXLS0VZ1xsSgbtr7U4Xqcu7zrnTQNuAfmIwSxGBHqUykjj…

selectors probed

Certificate (current)

Sectigo Public Server Authentication CA DV R36

from 2025-08-13 to 2026-09-13

Expires in 116 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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