2π.com

.com crawl

First seen 2026-05-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 6352 ms crawled 2026-05-28

US · 185.199.109.153 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Math & Engineering
Description: Random collections of my notes and articles over the years, mostly about maths and/or engineering.
Language: en

Technology

CDN: Fastly
Server: GitHub.com

Analytics

Plausible

Third-party hosts loaded (3)

cdn.jsdelivr.net×2
creativecommons.org×1
plausible.io×1

Registration

Registrar

Squarespace Domains II LLC

Created

2012-05-07

Expires

2027-05-07 338 days left

Updated

2026-04-22

Name servers

ns-cloud-e1.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e3.googledomains.com
ns-cloud-e4.googledomains.com

DNS records live

NS

ns-cloud-e1.googledomains.com
ns-cloud-e2.googledomains.com
ns-cloud-e3.googledomains.com
ns-cloud-e4.googledomains.com

Email authentication no MX

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

Certificate (current)

R13

from 2026-04-25 to 2026-07-24

Expires in 51 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://xn--2-umb.com/

findings

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

Links to (1)

creativecommons.org×2