indexo.dev

dujun.io

.io crawl

First seen 2026-04-21 · Last seen 2026-05-15 · ok HTTP/1.1 200 9517 ms crawled 2026-05-15

SG · 43.174.247.33 · AS139341 ACE

Reputation 100/100

Classifying

Technology

Server
nginx

DNS records live

NS
  • ns1.teodns.com
  • ns2.teodns.com
MX
  • 5 mxn.mxhichina.com
  • 5 mxw.mxhichina.com

Email authentication strong

SPF
v=spf1 include:spf.mxhichina.com -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:i@dujun.io; ruf=mailto:i@dujun.io
policy: quarantine
DKIM
  • default: v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCY9C5blDtjODuAErK9z6rk2qwbVVbAiO+VJ2xhlCufDoQMtmBeAJwkxI8I1XCRFIOxBvLsUSnHGzRE4…
selectors probed

Certificate (current)

TrustAsia DV TLS RSA CA 2025
from 2026-04-15 to 2026-07-14
Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 80/100 Checked live page: https://dujun.io/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
findings
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
deny
x-content-type-options
nosniff
content-security-policy
default-src 'self'; font-src data: 'self'; style-src https: 'self' 'unsafe-inline'; img-src https: 'self' data:; media-src https: 'self'; script-src https: 'self' 'unsafe-inline' 'unsafe-eval'; connect-src https: *; frame-src https: *
strict-transport-security
max-age=16070400;includeSubDomains;preload

Linked from (2)