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Domain report

ycombinator.com

ycombinator.com ranks in the top 0.00043% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 36 distinct hosts observed under it.

Explore ycombinator.com in the Web Graph

Connectivity

#576harmonic-centrality rank
Top percentile
0.00043%
Hosts observed
36

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://ycombinator.com/ answered with HTTP 200.

DNS records

A
  • 108.156.184.40
  • 108.156.184.42
  • 108.156.184.76
  • 108.156.184.35
AAAA
  • 2600:9000:24fd:a200:15:891f:4040:93a1
  • 2600:9000:24fd:5400:15:891f:4040:93a1
  • 2600:9000:24fd:1400:15:891f:4040:93a1
  • 2600:9000:24fd:cc00:15:891f:4040:93a1
  • 2600:9000:24fd:5a00:15:891f:4040:93a1
  • 2600:9000:24fd:de00:15:891f:4040:93a1
  • 2600:9000:24fd:f600:15:891f:4040:93a1
  • 2600:9000:24fd:fa00:15:891f:4040:93a1
MX
  • 10 aspmx.l.google.com.
  • 20 alt1.aspmx.l.google.com.
  • 20 alt2.aspmx.l.google.com.
  • 30 aspmx4.googlemail.com.
NS
  • ns-1411.awsdns-48.org.
  • ns-1914.awsdns-47.co.uk.
  • ns-225.awsdns-28.com.
  • ns-556.awsdns-05.net.

Live preview

Screenshot of ycombinator.com

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since ycombinator.com can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=utf-8
Cache-Control
max-age=0, private, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=63072000; includeSubDomains
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
strict-origin-when-cross-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://ycombinator.com/HTTP 301

    → https://ycombinator.com/

  2. 2.https://ycombinator.com/HTTP 301

    → https://www.ycombinator.com/

  3. 3.https://www.ycombinator.com/HTTP 200

Meta tags

Title
Y Combinator
Description
Y Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups.
Canonical
Not set
Robots
follow
Generator
Not set
Open Graph title
Y Combinator
Open Graph description
Y Combinator created a new model for funding early stage startups. Four times a year we invest in a large number of startups.
Open Graph image
https://www.ycombinator.com/assets/ycdc/yc-og-image-c440a0ad1dacfb86eeeb343717479cc54d256614449b4ef719977a0a451f8bc8.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
https://www.ycombinator.com/assets/ycdc/yc-og-image-c440a0ad1dacfb86eeeb343717479cc54d256614449b4ef719977a0a451f8bc8.png

robots.txt

Disallow rules (User-agent: *)
4
Disallow rules (other agents)
0

No Sitemap declared in robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • Google Analyticsanalytics

    Found "www.google-analytics.com" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.