periodic-table.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-14 · ok HTTP/1.1 200 5480 ms crawled 2026-05-11

US · 172.67.203.135 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

sector education type homepage

HTML metadata

Title: Periodic Table Of Elements | Definition, Mass & Names Of Chemical Elements
Description: Interactive periodic table of elements - your complete guide to the elements including definition, mass & names of each chemical in the periodic table.
Language: en-US
Generator: WordPress 6.9
Canonical: https://periodic-table.com

Open Graph

url: https://periodic-table.com/
title: Periodic Table
locale: en_US
site name: Periodic Table
description: Interactive periodic table of elements - your complete guide to the elements including definition, mass & names of each chemical in the periodic table.

Technology

CDN: Cloudflare
CMS: WordPress

Analytics

Google Tag Manager

Fonts

Font Awesome
Google Fonts

Third-party hosts loaded (6)

fonts.googleapis.com×2
use.fontawesome.com×2
c0.wp.com×1
i0.wp.com×1
stats.wp.com×1
www.googletagmanager.com×1

Registration

Registrar

NameCheap, Inc.

Created

2002-01-13

Expires

2027-01-13 238 days left

Updated

2026-02-21

Name servers

damien.ns.cloudflare.com
ingrid.ns.cloudflare.com

DNS records live

NS

damien.ns.cloudflare.com
ingrid.ns.cloudflare.com

Email authentication no MX

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

Certificate (current)

from 2026-04-21 to 2026-07-20

Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://periodic-table.com/

findings

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