🌐 npmjs.dev 200 🔒 SSL Valid
Checked: (cached 2026-10-27 20:05:52) ↻ Refresh 🔗 Visit site
✨ About this site
This site provides an interactive browser-based environment for experimenting with npm software packages. It is a newer, independent web utility rather than the official npm registry. The name combines 'npm', referring to the Node Package Manager, with the development-related '.dev' top-level domain.
📊 What the data says
This website is hosted on Vercel and currently returns an HTTP 200 status. Registered in 2023, it features HSTS security headers and an SSL certificate valid until January 2027. The performance score is 82 on mobile and 100 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 →
200
SSL Expires ?When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 66d
Domain Expires ?When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 263d
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 →
1/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
76.76.21.21
Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
82 mob
Uptime
100%
⚡ Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability. 82
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Mobile
82
Score
90
Accessibility
100
Best Practices
82
SEO
LCP 4.27s
CLS 0.000
FCP 2.38s
TTFB 0.00s
TBT 0ms
SI 2.96s
Desktop
100
Score
90
Accessibility
100
Best Practices
82
SEO
LCP 0.55s
CLS 0.000
FCP 0.52s
TTFB 0.00s
TBT 12ms
SI 0.72s
Checked: 2026-10-27 20:20:13.59567 · View on PageSpeed
🛠️ Tech Stack ?Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 1
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☁️ Hosting
Vercel
📸 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)76.76.21.21
NSns-cloud-a1.googledomains.comns-cloud-a4.googledomains.comns-cloud-a3.googledomains.comns-cloud-a2.googledomains.com
📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarSquarespace Domains II LLC.
Registered2023-07-19
Expires2027-07-19 (in 263 days)
Last Updated2026-07-09
Statusclient delete prohibitedclient transfer prohibited
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)npmjs.dev
IssuerLet's Encrypt
Valid From2026-10-05
Valid Until2027-01-03 (66 days left)
SANs (1)npmjs.dev
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status200
ServerVercel
Content-Typetext/html; charset=utf-8
Final URLhttps://npmjs.dev/
strict-transport-securitymax-age=63072000
cache-controlpublic, max-age=0, must-revalidate
Security headers ?HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
HSTS
Content-Security-Policy
X-Frame-Options
🏠 Hosting ?Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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IP Address76.76.21.21
ProviderUnknown
OrganizationN/A
ASNN/A
LocationN/A
🛡️ Security Score F (2/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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Open to search engines
This site's robots.txt lets crawlers access its main content. Search engines can index it normally.
No paths are disallowed — everything is crawlable.
Sitemap Not found
🔗 Social & Meta Tags Missing
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Titlenpmjs.dev - Fiddle with npm packages in browser
Languageen
📧 Mail Security ?Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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SPFNot set
DMARCNot set
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 20 active 2 for sale 1 available
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.com ●
.net ●
.org ●
.info ●
.io ●
.co taken
.dev current
.app ●
.me ●
.biz ●
.eu Available
.xyz ●
.fi ●
.se ●
.de ●
.uk ●
.fr ●
.nl ●
.es ●
.it ●
.us taken
.ca ●
.com.au ●
.co.uk ●
📡 Uptime Monitor
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Current Status 🟢 Online
HTTP Status 200
Response Time 50ms
Last Checked 2026-10-28 07:01:19.212988
Uptime (30d) 100%