indexo.dev

jie-tan.net

.net crawl

First seen 2026-05-01 · Last seen 2026-05-19 · ok HTTP/1.1 200 745 ms crawled 2026-05-08

US · 192.232.219.97 · AS31898 Oracle Corporation

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Jie Tan's Homepage

Technology

Server
Apache

Social

Registration

Registrar
Launchpad.com Inc.
Created
2016-10-31
Expires
2026-10-31 163 days left
Updated
2025-10-16
Name servers
  • ns6171.hostgator.com
  • ns6172.hostgator.com

DNS records live

NS
  • ns6171.hostgator.com
  • ns6172.hostgator.com
MX
  • 0 mail.jie-tan.net

Email authentication weak

SPF
v=spf1 a mx include:websitewelcome.com ~all
softfail (~all)
DMARC
not published
DKIM
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwUHv6V/R1wVledbGGdsYYuby/b5gvDEzPwmOvipwoMo87mMkLlYi62kGidet9AjNlNX9FbYhYK98jM…
selectors probed

Certificate (current)

R13
from 2026-03-27 to 2026-06-25
Expires in 36 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://jie-tan.net/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (3)

Linked from (2)