duckdns.org

Duck DNS

Overview

• Status: alive
• First seen: 2026-09-21
• Last crawled: 2026-09-22
• Security grade: F (40/100)
• TLS certificate expires: 2027-01-13
• Inbound links seen: 3

Security & email signals

• ✓ HTTPS
• ✗ HSTS
• ✗ Content-Security-Policy
• ✗ X-Content-Type-Options
• ✓ X-Frame-Options
• ✗ Referrer-Policy
• ✗ Permissions-Policy
• ✗ SPF record
• ✗ DMARC record
• ✗ DKIM record
• ✗ Cookies set securely
• ✓ Has real content (not an empty shell)
• ✓ Valid TLS certificate

Detected technology

Backend language: Java

Infrastructure: Nginx

Recent changes

• 2026-09-22 — TLS expiry changed from "2027-01-13" to "2027-01-13"
• 2026-09-22 — TLS expiry changed from "2027-01-13" to "2027-01-13"
• 2026-09-22 — TLS expiry changed from "2027-01-13" to "2027-01-13"
• 2026-09-22 — detected tech changed from "9" to "39,9"
• 2026-09-22 — TLS expiry changed from "2027-01-13" to "2027-01-13"
• 2026-09-21 — TLS expiry changed from "2027-01-13" to "2027-01-13"
• 2026-09-21 — TLS expiry changed from "2027-01-13" to "2027-01-13"

This profile is generated automatically from passive, publicly observable data. Think something here is wrong or want this profile removed? See /bot.