firstround.com

Observed 2026-07-14T03:34:11.343Z (12h 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 ConsoleNotionZoomDocuSignAtlassian

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

ns15.zoneedit.comns12.zoneedit.com

zoneedit.comanswers its DNS

alt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comaspmx.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 time271 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

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

TXT 25

google-site-verification=IjmQeUwoq-QHgfc4DSN_g9YGqHh4DIoqTU-CMelB3QU
serval-domain-verification-avwm00=gQrxiDQJu4pufHJhu0momklHY
anthropic-domain-verification-a5ptd3=3zGt497BoGluxHrzwqH01kjZ0
loom-verification=6092900914
notion-domain-verification=LmZ4yW3vf55LOMWwjMeOfLrvPZLpHYEOjp8EtI09wo6
dropbox-domain-verification=lnhvr9m8fcx1
ZOOM_verify_xWKV2q0IReSthII7M7DTrw
docusign=eac30b34-e825-48fa-91ab-a49d1719c158
tinfoil-site-verification: 45a5966a15800a89248a719b9b70852110aae512=0868cc04103d2cded33041490d04bda66701cf51
google-site-verification=SHTW1D3JTyb6Ab_wkMReLy1KcsfCmo5a5_OGtK0OPn0

NS 2

ns15.zoneedit.com
ns12.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: 0a43140a-ad33-41f9-b720-e8388dc09538
Output Hash: 93507bfa5e41e51b99dc0aa5f24240a72e6aef781a99a6f538124e6444e442a3
Signature: ed25519:a9f08e6d75e6d0e3a5b286be9404ac1a1e11b92529a814195386593d98efbc23f4d75ac6868945fdaabf3704130d238ac9308eb2e9bfb08dfa3ea1166e4fc60b
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/firstround.com