indexo.dev

ottolearn.dev

.dev crawl

First seen 2026-04-28 · Last seen 2026-05-18 · ok HTTP/1.1 200 3978 ms crawled 2026-05-05

US · 3.174.113.8 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
OttoLearn
Language
en
Canonical
https://www.ottolearn.dev/

Open Graph

title
OttoLearn
site name
OttoLearn

Technology

CDN
Cloudflare

Third-party hosts loaded (2)

  • cdn.readme.io×59
  • files.readme.io×3

DNS records live

NS
  • ns-1403.awsdns-47.org
  • ns-1848.awsdns-39.co.uk
  • ns-260.awsdns-32.com
  • ns-738.awsdns-28.net

Certificate (current)

Amazon RSA 2048 M04
from 2025-09-03 to 2026-10-02
Expires in 135 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.ottolearn.dev/

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=31536000

Links to (1)

Linked from (1)