quanquancliu.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-09 · ok HTTP/1.1 200 1720 ms crawled 2026-05-07

US · 3.164.206.8 · AS16509 Amazon.com, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Quanquan C. Liu
Language: en

Technology

CDN: Amazon CloudFront
Server: AmazonS3

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (3)

fonts.googleapis.com×2
fonts.gstatic.com×1
www.googletagmanager.com×1

Social

Registration

Registrar

Amazon Registrar, Inc.

Created

2020-12-26

Expires

2026-12-26 221 days left

Updated

2025-11-21

Name servers

ns-1475.awsdns-56.org
ns-1701.awsdns-20.co.uk
ns-409.awsdns-51.com
ns-880.awsdns-46.net

DNS records live

NS

ns-1475.awsdns-56.org
ns-1701.awsdns-20.co.uk
ns-409.awsdns-51.com
ns-880.awsdns-46.net

Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

Amazon RSA 2048 M03

from 2025-07-25 to 2026-08-23

Expires in 96 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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