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Domain report

firstround.com

firstround.com ranks in the top 0.0043% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 41 distinct hosts observed under it.

Explore firstround.com in the Web Graph

Connectivity

#5,704harmonic-centrality rank
Top percentile
0.0043%
Hosts observed
41

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://firstround.com/ answered with HTTP 200.

DNS records

A
  • 76.76.21.21
AAAA
No records found.
MX
  • 5 alt1.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
  • 10 alt3.aspmx.l.google.com.
  • 10 alt4.aspmx.l.google.com.
  • 1 aspmx.l.google.com.
NS
  • ns15.zoneedit.com.
  • ns12.zoneedit.com.
AS
Server in network AMAZON-02, AS16509 · United States76.76.21.0/24, which holds 76.76.21.21

Live preview

This is a live, sandboxed embed of firstround.com — not a copy. What it shows can change any time the site itself does.

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
public, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=63072000
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://firstround.com/HTTP 308

    → https://firstround.com/

  2. 2.https://firstround.com/HTTP 308

    → https://www.firstround.com/

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

Meta tags

Title
Home | First Round
Description
First Round is a venture capital firm that works with founders exclusively at the earliest stages of company building, often when all they have is an “imagine if.”
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Home | First Round
Open Graph description
First Round is a venture capital firm that works with founders exclusively at the earliest stages of company building, often when all they have is an “imagine if.”
Open Graph image
https://cdn.sanity.io/images/m6i10uln/production/aef48c10a5038779888ea7fce62cc85e923827d2-1107x630.jpg?fm=webp
Open Graph type
Not set
Twitter card
summary_large_image
Twitter title
Home | First Round
Twitter image
https://cdn.sanity.io/images/m6i10uln/production/aef48c10a5038779888ea7fce62cc85e923827d2-1107x630.jpg?fm=webp

robots.txt

Disallow rules (User-agent: *)
0
Disallow rules (other agents)
16

Sitemap declared:

  • https://www.firstround.com/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Next.jsframework

    Found "_next/static/" in the page's HTML

  • Google Analyticsanalytics

    Found "googletagmanager.com/gtag/js" in the page's HTML

Related domains

Similar connectivity

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