indexo.dev

derekyu.com

.com crawl

First seen 2026-04-21 · Last seen 2026-05-15 · ok HTTP/1.1 200 7610 ms crawled 2026-05-15

US · 35.215.126.18 · AS15169 Google LLC

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Derek Yu's Home on the Web
Description
Derek Yu's Home on the Web
Language
en

Technology

Server
nginx

Social

Registration

Registrar
eNom, LLC
Created
2005-03-29
Expires
2027-03-29 313 days left
Updated
2026-03-14
Name servers
  • ns1.siteground.net
  • ns2.siteground.net

DNS records live

NS
  • ns1.siteground.net
  • ns2.siteground.net
MX
  • 10 mx10.antispam.mailspamprotection.com
  • 20 mx20.antispam.mailspamprotection.com
  • 30 mx30.antispam.mailspamprotection.com

Email authentication partial

SPF
v=spf1 +a +mx include:derekyu.com.spf.auto.dnssmarthost.net ~all
softfail (~all)
DMARC
v=DMARC1; p=none; aspf=r; adkim=r;
policy: none (monitoring only)
DKIM
  • default: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDkgc5Yj0eU8v/f2JVcQiuhnHtUKdq+emmZWeFmNiNPxgLX4yYvpu387Y7aU1CQ823xlyRsZ5VG6GzEYwqLNn…
selectors probed

Certificate (current)

R12
from 2026-03-22 to 2026-06-20
Expires in 32 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://derekyu.com/

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

Links to (9)

Linked from (1)