nctm.org

https://nctm.org· First analyzed 24 Apr 2026· Updated 24 Apr 2026

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nctm.org

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.40.185

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

kay.ns.cloudflare.com.sam.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

327 ms10%

Speed Index

425 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

80 KB

124 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

Magento

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

19 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

CSS Frameworks

Bootstrap

Tailwind CSS

Chakra UI

Advertising

Google Ads Twitter Ads LinkedIn Ads

Frameworks

Libraries

UI Components

Icon Libraries

Fonts

Tag Managers

Popups & Forms

CDN

Customer Support

SEO Analysis

D55/100

Meta Tags15/15

Content3/12

Headings3/8

Technical15/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

nctm.orgnctm.org

Index - National Council of Teachers of Mathematics

Founded in 1920, the National Council of Teachers of Mathematics (NCTM) is the largest organization in the world dedicated to improving mathematics education.,

Title Length51 chars

Recommended: 50-60 chars (~308px / 580px)

Description Length160 chars

Recommended: 120-160 chars

Issues (3)

• Very thin content (8 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (20/24) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: standard

736 URLs

robots.txt

49 rules

Local SEO

Local Search Readiness

13/100

Poor

4 11 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F29/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

2/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:1%

Words:856

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

56/100

Passed

Critical

Warnings

Images & Alt Text

10/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

6/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

63/100

A+

8 mg

CO₂e / view

79.8 KB

Page Weight

95%

Cleaner Than

New Visitor

9 mg

Returning (cached)

5 mg

Annual (10K/mo)

972 g

Emission Segments

Data Center

<0.001 g

Network

2 mg

Device

5 mg

Resource Breakdown

HTML

31.9 KB

Other

47.9 KB

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

15%Critical

Critical / Transactional

HTTPS

WAF

88d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

22.04.2026

Valid Until

21.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

nctm.org*.nctm.org

SHA-256 Fingerprint

CA:82:07:17:9A:51:01:DD:DC:8D:F1:C9:B7:C3:71:E3:3F:D7:AE:A6...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟣 Private(private)

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9f11f9667d2e39d4-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

nctm-org.mail.protection.outlook.com

Domain Information

nctm.org

Domain Age

30y 12m

Created

03.05.1995

Expires

04.05.2031

Last Updated

21.07.2022

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

76/100

Mobile Friendly5 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue

WCAG Partial

66/100

Readability

/30

22/30

14px · LH 1.43

Hierarchy

/20

8/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

1:1

22 issues

Reading Comfort

~45 CPL

Optimal (45–75)

18px

24px

18px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

GGoogle FontsFlesch 18

Color Palette

8 unique colors

Light

#ffffff

Background· 68.9%

#023767

Primary· 5.3%

#672c76

Secondary· 3.8%

#abd3de

Secondary· 3.4%

#b9a4b7

Secondary· 3%

#5c99b8

Secondary· 2.9%

#dbe4e7

Secondary· 2.9%

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

28 Resources

Scripts

Styles

Async

Defer

Top Script Sources

connect.facebook.net(4)d3k8n8jihns708.cloudfront.net(2)googletagmanager.com(2)local(2)securepubads.g.doubleclick.net(2)

Website Identity

nctm.org

nctm@nctm.org

30 years old

Location detected: 🇨🇦 Canadavia ip

NameCheap, Inc.📧 Microsoft 365en

Social Profiles

Facebook X (Twitter)Instagram LinkedIn TikTok Pinterest

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Last analyzed: 24 Apr 2026 at 03:22

Historical Analysis & Change Tracking