firstround.com

Observed 2026-07-15T11:12:49.711Z (18m ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Registered with101domain GRS Limited

Also usesGoogle Search ConsoleDocuSignZoomNotionAtlassian

6 subdomains · push_legacy

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat firstround.com actually stands on - every host below is a signed observation

firstround.com

A / AAAA

76.76.21.21

Cloudflareserves the site

ns12.zoneedit.comns15.zoneedit.com

zoneedit.comanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt3.aspmx.l.google.comalt2.aspmx.l.google.com+1 more

Google Workspacereceives its email

HTTPS probe

redirect Redirecting (3xx) 308 → https://www.firstround.com/

HTTP status308

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time273 ms

DNS resolutionNOERROR

Redirect chain

https://www.firstround.com/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

76.76.21.21

MX 5

1aspmx.l.google.com
5alt1.aspmx.l.google.com
10alt3.aspmx.l.google.com
5alt2.aspmx.l.google.com
10alt4.aspmx.l.google.com

TXT 25

google-site-verification=SHTW1D3JTyb6Ab_wkMReLy1KcsfCmo5a5_OGtK0OPn0
v=spf1 include:mailgun.org include:firstround.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
docusign=eac30b34-e825-48fa-91ab-a49d1719c158
quKZfmpsWEo7WCdvNUhXMX7nyNqRwp
loom-verification=6092900914
tinfoil-site-verification: 0303de9b66801c73fb394e2422b17c77a81d1e8e=a9c3d1bcc1ba8321c74737a75d6c23d513f5857e
anthropic-domain-verification-a5ptd3=3zGt497BoGluxHrzwqH01kjZ0
ZOOM_verify_xWKV2q0IReSthII7M7DTrw
tinfoil-site-verification: 7ed4d987c42ab73c75abe93523e82f1cfc905357=cbfc6debc4134d2a857d9af4569591b52631e2c0
soI951V

NS 2

ns12.zoneedit.com
ns15.zoneedit.com

SOA 1

dns0.zoneedit.com zone.zoneedit.com

TLS Certificates (0)

None.

Subdomains (6)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for firstround.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/firstround.com">
  <img src="https://domaindrift.io/badge/firstround.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for firstround.com">
</a>

Ed25519 Receipt

Receipt ID: e358e23a-b9d0-4ad2-a5ff-947183bad5b3
Output Hash: 45a4cb3598cd72d5e1fc095a07693b32981e60f8054160352f056651141f8fcf
Signature: ed25519:f124125732e3b82b7a75a7f89f3edfaca1c9c84e034bff130918165e4b4fa58fe59507a36394a1acc957b3850f7ed00bc067c8c7c2ea099e9b638364b0021505
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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