indexo.dev

sumofsquares.org

.org crawl

First seen 2026-04-22 · Last seen 2026-05-19 · ok HTTP/1.1 200 1675 ms crawled 2026-05-15

DE · 35.157.26.135 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Proofs, beliefs and algorithms through the lens of Sum of Squares
Generator
pandoc

Technology

CDN
Netlify

Social

Registration

Registrar
Squarespace Domains II LLC
Created
2013-03-25
Expires
2027-03-25 309 days left
Updated
2026-03-15
Name servers
  • dns1.p01.nsone.net
  • dns2.p01.nsone.net
  • dns3.p01.nsone.net
  • dns4.p01.nsone.net

DNS records live

NS
  • dns1.p01.nsone.net
  • dns2.p01.nsone.net
  • dns3.p01.nsone.net
  • dns4.p01.nsone.net

Email authentication no MX

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

Certificate (current)

E7
from 2026-04-17 to 2026-07-16
Expires in 58 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.sumofsquares.org/public/index.html

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000

Links to (3)

Linked from (2)