diamondproblemsolver.org

.org crawl

First seen 2026-05-02 · Last seen 2026-05-07 · ok HTTP/1.1 200 984 ms crawled 2026-05-08

US · 188.114.97.3 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: Diamond Problem Solver — Free Online Tool | DiamondProblemSolver.org
Description: Free diamond problem solver for algebra. Enter any two values — get the missing numbers instantly with step-by-step explanation. Supports negatives and all problem types.
Language: en
Canonical: https://diamondproblemsolver.org/

Open Graph

url: https://diamondproblemsolver.org/
title: Diamond Problem Solver — Free Online Tool
locale: en_US
site name: DiamondProblemSolver.org
description: Free diamond problem solver for algebra. Enter any two values — get the missing numbers instantly with step-by-step explanation. Supports negatives and all problem types.

Technology

CDN: Cloudflare

Fonts

Google Fonts

Third-party hosts loaded (2)

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

Registration

Registrar

Spaceship, Inc.

Created

2026-02-09

Expires

2027-02-09 265 days left

Updated

2026-03-17

Name servers

cora.ns.cloudflare.com
kobe.ns.cloudflare.com

DNS records live

NS

cora.ns.cloudflare.com
kobe.ns.cloudflare.com

TXT

replit-verify=e2de8f2f-e75c-4c93-b406-9003fb4f598d

Email authentication no MX

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

Certificate (current)

from 2026-03-17 to 2026-06-15

Expires in 27 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://diamondproblemsolver.org/

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=63072000; includeSubDomains