twentythirdpublications.com

.com crawl

First seen 2026-05-30 · Last seen 2026-06-01 · ok HTTP/1.1 200 550 ms crawled 2026-05-31

CA · 23.227.38.65 · AS13335 Cloudflare, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: Twenty-Third Publications
Language: en
Canonical: https://twentythirdpublications.com/

Open Graph

url: https://twentythirdpublications.com/
title: Twenty-Third Publications
site name: Twenty-Third Publications
description: Twenty-Third Publications

Technology

CDN: Cloudflare
CMS: Shopify

Third-party hosts loaded (7)

cdn.shopify.com×4
cdn.jsdelivr.net×3
shop.app×2
fonts.shopifycdn.com×1
monorail-edge.shopifysvc.com×1
static.boldcommerce.com×1
www.facebook.com×1

Social

Contact

Phone

800-321-0411

DNS records live

NS

ns27.domaincontrol.com
ns28.domaincontrol.com

MX

0 twentythirdpublications-com.mail.protection.outlook.com

TXT

duo_sso_verification=kYDBtVMaCTz6q05xVw2zAPJaINAZ7TG9K0TLB6OdoMG2b6qg3WhIf8gku8R93wP6

Verified for

Meta
Microsoft 365

Email authentication partial

SPF

v=spf1 mx ip4:63.246.2.84 ip4:63.246.2.94 ip4:68.187.5.146 ip4:64.129.115.102 ip4:216.58.234.100 include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=none

policy: none (monitoring only)

DKIM

k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…

selectors probed

Certificate (current)

from 2026-04-13 to 2026-07-12

Expires in 38 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://twentythirdpublications.com/

present

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

findings

short HSTS max-age
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: DENY
x-content-type-options: nosniff
content-security-policy: block-all-mixed-content; frame-ancestors 'none'; upgrade-insecure-requests;
strict-transport-security: max-age=7889238