indexo.dev

thirteen.org

.org crawl dns

First seen 2026-04-23 · Last seen 2026-05-19 · ok HTTP/1.1 202 19399 ms crawled 2026-05-17

US · 15.197.251.102 · AS16509 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Language
en

Technology

CDN
Amazon CloudFront
Server
CloudFront

Third-party hosts loaded (1)

  • 06f17e524755.a62927d9.eu-west-1.token.awswaf.com×1

Registration

Registrar
Network Solutions, LLC
Created
1997-11-01
Expires
2026-10-08 140 days left
Updated
2024-10-28
Name servers
  • ns1.thirteen.org
  • ns3.thirteen.org
  • ns2.thirteen.org
  • ns4.thirteen.org

DNS records live

NS
  • ns1.thirteen.org
  • ns2.thirteen.org
  • ns3.thirteen.org
  • ns4.thirteen.org
MX
  • 10 thirteen-org.mail.protection.outlook.com
TXT
Show 4 TXT records
  • amazonses:F7cNLqPhG8/NzCuk/PRp0E0UGIY8S38f9Sw5Coz4RhQ=
  • amazonses:+rJ1nQLSaFNH12v0+b1+0MmewmGcgYlDGpxSlyOjjg8=
  • PdiDfZx7V9toa6Y8eehLBBLex29PUdqnJKhqnvUEnQ2ESSVMI56x7YiFsJgdwzljFyKfR5GF+zNNlNUGhqXWWQ==
  • IFHKQM8J2LIC3BAWBNLFE0WULU5P7SGVVK77K80H1
Verified for
  • Airtable
  • Apple
  • Atlassian
  • DocuSign
  • Google
  • Microsoft 365
  • Zoom

Email authentication partial

SPF
v=spf1 a mx ip4:209.160.160.0/24 ip4:209.178.246.0/24 ip4:38.94.171.0/24 ip4:216.235.195.0/24 ip4:52.71.125.57 include:outboundmail.convio.net include:spf.protection.outlook.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@thirteen.org; ruf=mailto:unixadmin@thirteen.org; sp=none; fo=1;
policy: none (monitoring only) · sp=none
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDVRD4j6iF29UQo8YQVdclQReHLiGRMRBReVuqBNGlM81sBiV3LZCWGAZzsPLntvOREAX7Y3Y++Hu+hVgyRaN…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx8uXmCvZ/3ELERWH26Bsx6v1I5F9q6QBUvr8C/mJ2uXUbys9iQWhw7sJgTiHLw1h0U0+OqcS7bawk3…
selectors probed

Certificate (current)

Amazon RSA 2048 M04
from 2026-04-11 to 2026-10-26
Expires in 158 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.thirteen.org/

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

Linked from (2)