ycombinator.com 200 🔒 SSL Valid
Checked: just now 🔗 Visit site
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 141d
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 →
AWS
Security ?Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
2/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
108.138.64.8
🛠️ Tech Stack ?Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 6
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📊 Analytics
Google Analytics
🌐 CDN
Cloudflare
🔤 Font/Icon
Google Fonts
⚙️ Framework
Laravel
☁️ Hosting
AWS
⚡ JS Framework
React
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🌐 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)108.138.64.45108.138.64.8108.138.64.111108.138.64.90
NSns-1411.awsdns-48.orgns-1914.awsdns-47.co.ukns-225.awsdns-28.comns-556.awsdns-05.net
MX10 aspmx.l.google.com20 alt1.aspmx.l.google.com20 alt2.aspmx.l.google.com30 aspmx4.googlemail.com
TXT
v=spf1 include:_spf.google.com include:mailgun.org a:rsweb1-36.investorflow.com include:_spf.createsend.com include:servers.mcsv.net -all
MS=ms37374900
Wayback verify for support request 741082
ZOOM_verify_2ndw8KZxSRa8PT8NmdyXvw
anthropic-domain-verification-0qe2ww=yK576oHdDgyTcXgkPfj1KXgGt
apple-domain-verification=WG0sP5Alm7N6h1Te
ca3-4861b957e83847c188e45d04ec314ee3
dropbox-domain-verification=asc63coma4mv
google-site-verification=GJKdQskycEclAGPua3yXB9m_nVhxbrsVps_y-t9SXV0
google-site-verification=KsI69Y_jEVkp4eXqSQ9R9gwxjIpZznvuvrus6UolB9Y
google-site-verification=rivq8jKu6AADGtbbEzJhmOpcqq08B7QxIzXxYV8DtyU
openai-domain-verification=dv-QbhxxK0G0JK0dnyZ4YTsNAfw
rippling-domain-verification=a660f7a4ab77a3de
📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarN/A
RegisteredN/A
ExpiresN/A
Last UpdatedN/A
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)ycombinator.com
IssuerAmazon
Valid From2025-12-11
Valid Until2027-01-08 (141 days left)
SANs (2)ycombinator.com*.ycombinator.com
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status200
Servercloudflare
Content-Typetext/html; charset=utf-8
Final URLhttps://www.ycombinator.com/
strict-transport-securitymax-age=63072000; includeSubDomains
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
cache-controlmax-age=0, private, must-revalidate
cf-raya2de1e624e57d65b-IAD
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 Address108.138.64.8
ProviderAWS
OrganizationAmazon.com, Inc.
ASNAS16509
CountryUS
CityDulles Town Center
🛡️ Security Score B (5/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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robots.txt Found Open
Sitemap Found 103 pages
Last modified 2026-08-20
Disallowed paths
/verify/*
/library?categories=*&*
/library?*
/companies?*
🔗 Social & Meta Tags Complete
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TitleY Combinator
DescriptionY Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups.
OG TitleY Combinator
OG DescriptionY Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups.
OG Imagehttps://www.ycombinator.com/assets/ycdc/yc-og-image-c440a0ad1dacfb86eeeb343717479cc54d256614449b4ef719977a0a451f8bc8.png
OG preview
OG Typewebsite
OG Site NameY Combinator
Twitter Cardsummary_large_image
Languageen
📧 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 include:_spf.google.com include:mailgun.org a:rsweb1-36.investorflow.com include:_spf.createsend.com include:servers.mcsv.net -all
DMARC✓ Present
v=DMARC1; p=none; pct=100; sp=none; ruf=mailto:[email protected]; rua=mailto:[email protected]; aspf=r;
MX Records
10 → aspmx.l.google.com
20 → alt1.aspmx.l.google.com
20 → alt2.aspmx.l.google.com
30 → aspmx4.googlemail.com