mammothmountain.com
California's Best Skiing & Snowboarding | Mammoth Mountain
Last scanned Aug 24, 2026, 1:22 PM · 1 view
Overall score
Great
Summary
Official site of Mammoth Mountain Ski Area. This website uses Next.js behind Vercel CDN. SEO is good (75/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance good (80/100). Top issue: Missing canonical link.
Official site of Mammoth Mountain Ski Area. California's best resort for skiing and snowboarding in the winter, and mountain biking in the summer.
Top issues to fix
8 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
51 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
- Phone
- 800.MAMMOTH
Meta tags
- Title
- California's Best Skiing & Snowboarding | Mammoth Mountain
- Description
- Official site of Mammoth Mountain Ski Area. California's best resort for skiing and snowboarding in the winter, and mountain biking in the summer.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- all
- Manifest
- https://www.mammothmountain.com/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Vercel
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- mammothmountain.com
- Valid from
- Sep 12, 2025
- Valid to
- Oct 6, 2026
- Days until expiry
- 42
- SAN domains
- mammothmountain.com, www.mammothmountain.com, mammothresorts.com, www.mammothresorts.com, mammoth-mtn.com, www.mammoth-mtn.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 1 · H3 8
Links
40 internal · 31 external · 5 broken
Images
59 total · 0 missing alt
Scripts / Styles
51 scripts · 8 stylesheets
JS / CSS size
157 KB · 904 KB
Page size
427 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://mammothmountain.com
- Final URL
- https://www.mammothmountain.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 43 ms
- HTML size
- 427 KB
- Redirect chain
- https://mammothmountain.com → https://www.mammothmountain.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does mammothmountain.com use?
- mammothmountain.com is built with React, Next.js, Google Analytics, Google Ads, Meta Pixel, TikTok Pixel.
- Is mammothmountain.com secure (HTTPS)?
- Yes. mammothmountain.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Oct 6, 2026.
- Who hosts mammothmountain.com?
- Hosting provider information for mammothmountain.com is not available yet.
- What is mammothmountain.com's SEO score?
- mammothmountain.com scored 75/100 for SEO in the latest analysis (fair).
- What is mammothmountain.com's overall website score?
- mammothmountain.com has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card