indexo.dev

thesheldon.org

.org crawl

First seen 2026-04-21 · Last seen 2026-05-15 · ok HTTP/1.1 200 4845 ms crawled 2026-05-15

US · 151.101.2.132 · AS54113 Fastly, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
The Sheldon
Language
en

Open Graph

url
https://www.thesheldon.org/
title
The Sheldon

Technology

Analytics
  • Google Tag Manager

Third-party hosts loaded (3)

  • if-cdn.com×2
  • cdnjs.cloudflare.com×1
  • www.googletagmanager.com×1

Social

Contact

Email
Phone
Address
St. Louis, Missouri, 63108

Registration

Registrar
Network Solutions, LLC
Created
2006-02-21
Expires
2029-02-21 1007 days left
Updated
2025-12-28
Name servers
  • ns85.worldnic.com
  • ns86.worldnic.com

DNS records live

NS
  • ns85.worldnic.com
  • ns86.worldnic.com
MX
  • 10 us-smtp-inbound-1.mimecast.com
  • 20 us-smtp-inbound-2.mimecast.com
TXT
  • 2MOJVBF5KARAN5SRGTR705PRCO
  • 1at27p9arq9tl25thruiqeo9ch

Email authentication partial

SPF
v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:outboundmail.blackbaud.net ~all
softfail (~all)
DMARC
v=DMARC1; p=none
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

Certainly Intermediate R1
from 2026-05-07 to 2026-06-06
Expires in 17 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 90/100 Checked live page: https://www.thesheldon.org/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
findings
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (5)

Linked from (1)