indexo.dev

feistyduck.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 1954 ms crawled 2026-05-18

US · 142.93.0.44 · AS14061 DigitalOcean, LLC

Reputation 100/100

Classifying

HTML metadata

Title
Feisty Duck | SSL/TLS and PKI training and books
Language
en

Technology

Server
Apache

Third-party hosts loaded (2)

  • js-de.sentry-cdn.com×1
  • reporting.qlued.com×1

Social

Registration

Registrar
Gandi SAS
Created
2006-01-29
Expires
2026-08-23 95 days left
Updated
2025-07-19
Name servers
  • ns-1362.awsdns-42.org
  • ns-1719.awsdns-22.co.uk
  • ns-471.awsdns-58.com
  • ns-526.awsdns-01.net

DNS records live

NS
  • ns-1362.awsdns-42.org
  • ns-1719.awsdns-22.co.uk
  • ns-471.awsdns-58.com
  • ns-526.awsdns-01.net
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • google-site-verification=nnuIuSf0HlBWc0sEwG4iv5V9EydNTw6W1v06IZ5MLTk

Email authentication strong

SPF
v=spf1 include:_spf.google.com include:sendgrid.net ~all
softfail (~all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:re+yxn6fmvfegb@dmarc.postmarkapp.com!10m; aspf=r;
policy: quarantine
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCR4kA1geVoFCtzfqjHcR3FZkm5IZ033kI61horqCVbTGeiePyyjZWn7sfM5oiH8kCu/88ECkTiV4J5ZkZ1Fg…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyytTUw5nPutBwcCgreVT8mOpReUEASPxy/GMG55WxYLRcEmnxY2TqevFFsjAFzYSZBQXc94hT0NiZ2nkpI…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQgwF88KFResjnRtDGwZXPki6CnUw7V/HizvNlXP7w8ulyGSjE9mxyjufrFw1bJgWKijoVK1Ikz312kLYqZpI9nq…
selectors probed

Certificate (current)

R12
from 2026-05-03 to 2026-08-01
Expires in 74 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://www.feistyduck.com/

present
  • strict-transport-security
  • content-security-policy-report-only
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff
strict-transport-security
max-age=31536001; includeSubDomains; preload
content-security-policy-report-only
default-src 'self'; base-uri 'self'; object-src 'none'; img-src 'self'; connect-src 'self' https://reporting.qlued.com https://*.ingest.de.sentry.io; font-src 'self' data: https://assets.gumroad.com; script-src 'nonce-e1fc17c0efb306d30a29290e6f8f1c76' 'strict-dynamic' 'report-sha256' 'report-sample' 'unsafe-inline' https: http:; style-src 'report-sample' 'self' 'unsafe-inline' https://assets.gumroad.com; upgrade-insecure-requests; frame-src https://www.tickettailor.com; frame-ancestors 'none'; report-to default; report-uri https://reporting.qlued.com/inbox?publicSessionId=64f26ea14b4987d3b03d73a3c7061113&requestId=e1fc17c0efb306d30a29290e6f8f1c76&userId=

Links to (2)

Linked from (2)