🌐
iss.nl
✨ About this site
This is the official website of the International Institute of Social Studies, an international graduate school offering policy-oriented critical social science programs and research.
📊 What the data says
The site uses jQuery and maintains active security headers like HSTS, CSP, and X-Frame-Options with an SSL certificate valid until February 2027. It returns a 200 HTTP status and achieves performance scores of 62 on mobile and 64 on desktop.
HTTP Status A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
N/A
SSL Expires When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
N/A
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
N/A
Hosting The company and location where this website's server is physically located.Read more →
Unknown
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
0/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
145.5.1.13
Performance Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
62
mob
Uptime
100%
Performance Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability. 62
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Mobile
Score
Accessibility
Best Practices
SEO
LCP
15.67s
CLS
0.000
FCP
2.94s
TTFB
0.01s
TBT
243ms
SI
5.22s
Desktop
Score
Accessibility
Best Practices
SEO
LCP
2.43s
CLS
0.000
FCP
0.78s
TTFB
0.00s
TBT
535ms
SI
1.06s
Checked: 2026-09-04 19:53:05.57288 · View on PageSpeed
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools.
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No technologies detected
Screenshot
Processing...
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⏳
Screenshot is being captured...
DNS Records DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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| A (IPv4) | 145.5.1.13 |
| NS | ns3.surfnet.nlns1.zurich.surf.netns1.surfnet.nlns2.surfnet.nl |
| MX | 0 iss-nl.s-v1.mx.microsoft |
| TXT (12) |
Services configured via TXT:
Adobe
Atlassian
Dropbox
Google
Knowbe4
Microsoft 365
Miro
+4 other TXT record(s)
Show all TXT recordsv=spf1 ip4:145.5.189.2 include:spf.protection.outlook.com -all miro-verification=3398bd3172ee4fdacc0f52cbb57f29046f36b258 HARICA-WZP5pyucoh77BHZNljY A7m4uQmFjZPG3svMQaWdqTvNjTmgCQF2H7DetmgbIyxWjhbSWjT7+RLqPKIk3eKhLsJ/zQ1kCtYBVRq2E9tEAQ== adobe-idp-site-verification=5d3a6228d29e80cf1fe4d4a5780ebd08c45fc8e741b748a0d7e664137ce90cc3 d365mktkey=P6IbD1oYzhvffozgxItd1tAILJRbqCCCmyTeCuUxIWox knowbe4-site-verification=8651a70f5f58b2b32967001e2104de85 ZOOM_verify_cUV8KGQKQs2Q9aGOqHy-cw google-site-verification=hvJhtULS1Jisxpuj4wvlYdPBBU-k0Nm49oKEwMmN1FI MS=ms70253650 dropbox-domain-verification=tp7tj2ha6x39 atlassian-domain-verification=kURX4B7iRnGEndh49X3Y8rq2tTKFeUqiqh2n6sCvxAgB7mN5kIgFkEKhN1/Bq6h4 |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | SURF B.V. |
| Registered | 1994-12-20 |
| Expires | N/A |
| Last Updated | 2025-11-04 |
| Status | active |
SSL Certificate Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Invalid / Missing
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| Subject (CN) | N/A |
| Issuer | N/A |
| Valid From | N/A |
| Valid Until | N/A |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | N/A |
| Server | N/A |
| Content-Type | N/A |
Security headers HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
Hosting Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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| IP Address | 145.5.1.13 |
| Provider | Unknown |
| Organization | N/A |
| ASN | N/A |
| Location | N/A |
Security Score
F (0/7)
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Sitemap & Robots
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No robots.txt
This site has no robots.txt file, so crawlers may access everything by default.
| Sitemap | Not found |
Social & Meta Tags
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No meta tags detected.
Mail Security Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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| SPF | ✓ Present v=spf1 ip4:145.5.189.2 include:spf.protection.outlook.com -all |
| DMARC | ✓ Present v=DMARC1;p=quarantine;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1:d:s |
| MX Records | 0 → iss-nl.s-v1.mx.microsoft |
Other TLDs Other top-level domain variants of this domain name and their availability. 18 active 3 for sale 2 available
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Uptime Monitor
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| Current Status | 🟢 Online |
| HTTP Status | 200 |
| Response Time | 4750ms |
| Last Checked | 2026-10-20 08:46:12.389185 |
| Uptime (30d) | 100% |
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