indexo.dev

mountainduck.io

.io crawl

First seen 2026-04-13 · Last seen 2026-05-06 · ok HTTP/1.1 200 710 ms crawled 2026-05-06

IE · 52.31.8.231 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Mountain Duck
Description
Cyberduck for mounting volumes in the file explorer. Available for Mac and Windows.
Language
en

Technology

Server
Apache
Analytics
  • Google Tag Manager

Third-party hosts loaded (4)

  • cdn.cyberduck.io×18
  • cdnjs.cloudflare.com×3
  • instant.page×1
  • www.googletagmanager.com×1

DNS records live

NS
  • ns-1529.awsdns-63.org
  • ns-1539.awsdns-00.co.uk
  • ns-262.awsdns-32.com
  • ns-714.awsdns-25.net
MX
  • 5 mail.mountainduck.io
TXT
  • MS=ms55668207

Email authentication strong

SPF
v=spf1 mx include:amazonses.com -all
strict (-all)
DMARC
v=DMARC1; p=reject
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-09 to 2026-07-08
Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://mountainduck.io/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY
x-content-type-options
nosniff
strict-transport-security
max-age=63072000

Links to (2)

Linked from (1)