concertgebouw.nl
Het Concertgebouw: een van de mooiste concertzalen - Concertgebouw - Nederlands
Last scanned Jul 26, 2026, 4:17 PM · 6 views
Overall score
Great
Summary
De akoestiek van Het Concertgebouw is wereldberoemd. This website uses Nuxt hosted on NL-BIT - BIT BV, NL. SEO is good (85/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance good (75/100). Top issue: Title longer than 60 characters.
De akoestiek van Het Concertgebouw is wereldberoemd. Naast het aanbod van meer dan 700 concerten vindt u ook een keuzehulp en inspiratie. Ontdek het allemaal!
- Netherlands
- Hosted on NL-BIT - BIT BV, NL
Top issues to fix
6 issues found · 1 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
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.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
SEO
2 issue(s) found
Performance
259 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
De akoestiek van Het Concertgebouw is wereldberoemd. Naast het aanbod van meer dan 700 concerten vindt u ook een keuzehulp en inspiratie. Ontdek het allemaal!
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Het Concertgebouw: een van de mooiste concertzalen - Concertgebouw - Nederlands
- Description
- De akoestiek van Het Concertgebouw is wereldberoemd. Naast het aanbod van meer dan 700 concerten vindt u ook een keuzehulp en inspiratie. Ontdek het allemaal!
- Canonical
- https://www.concertgebouw.nl/
- Language
- nl
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://www.concertgebouw.nl/favicons/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- NL-BIT - BIT BV, NL
- CDN provider
- —
- IP address
- 178.22.63.31
- ASN
- AS12859 (NL-BIT - BIT BV, NL)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT |
|
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- *.concertgebouw.nl
- Valid from
- Jun 4, 2026
- Valid to
- Sep 2, 2026
- Days until expiry
- 35
- SAN domains
- *.concertgebouw.nl, concertgebouw.nl
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 60
Links
66 internal · 11 external · 0 broken
Images
67 total · 0 missing alt
Scripts / Styles
18 scripts · 0 stylesheets
JS / CSS size
1.8 MB · 201 KB
Page size
486 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 11
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://concertgebouw.nl
- Final URL
- https://www.concertgebouw.nl/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 250 ms
- HTML size
- 486 KB
- Redirect chain
- https://concertgebouw.nl → https://www.concertgebouw.nl/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does concertgebouw.nl use?
- concertgebouw.nl is built with Vue.js, Nuxt, Nginx.
- Is concertgebouw.nl secure (HTTPS)?
- Yes. concertgebouw.nl uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 2, 2026.
- Who hosts concertgebouw.nl?
- concertgebouw.nl is hosted on NL-BIT - BIT BV, NL.
- What is concertgebouw.nl's SEO score?
- concertgebouw.nl scored 85/100 for SEO in the latest analysis (great).
- What is concertgebouw.nl's overall website score?
- concertgebouw.nl has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card