ycombinator.com

Observed 2026-07-12T21:22:37.868Z (12h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Registered withGandi SAS

Also usesGoogle Search ConsoleZoom

7 subdomains · tranco_5k

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

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

ycombinator.com

A / AAAA

18.65.3.2318.65.3.10518.65.3.218.65.3.34

Cloudflareserves the site

ns-225.awsdns-28.comns-556.awsdns-05.netns-1411.awsdns-48.orgns-1914.awsdns-47.co.uk

awsdns-28.com + awsdns-05.net + moreanswers its DNS

alt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx4.googlemail.com

Google Workspacereceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.ycombinator.com/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time54 ms

DNS resolutionNOERROR

Redirect chain

https://www.ycombinator.com/

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

DNS Records

A 4

18.65.3.23
18.65.3.105
18.65.3.2
18.65.3.34

MX 4

20alt1.aspmx.l.google.com
20alt2.aspmx.l.google.com
10aspmx.l.google.com
30aspmx4.googlemail.com

TXT 15

dropbox-domain-verification=asc63coma4mv
google-site-verification=GJKdQskycEclAGPua3yXB9m_nVhxbrsVps_y-t9SXV0
v=spf1 include:_spf.google.com include:mailgun.org a:rsweb1-36.investorflow.com include:_spf.createsend.com include:servers.mcsv.net -all
anthropic-domain-verification-0qe2ww=yK576oHdDgyTcXgkPfj1KXgGt
Wayback verify for support request 741082
google-site-verification=rivq8jKu6AADGtbbEzJhmOpcqq08B7QxIzXxYV8DtyU
openai-domain-verification=dv-QbhxxK0G0JK0dnyZ4YTsNAfw
google-site-verification=KsI69Y_jEVkp4eXqSQ9R9gwxjIpZznvuvrus6UolB9Y
ca3-4861b957e83847c188e45d04ec314ee3
ZOOM_verify_2ndw8KZxSRa8PT8NmdyXvw

NS 4

ns-225.awsdns-28.com
ns-556.awsdns-05.net
ns-1411.awsdns-48.org
ns-1914.awsdns-47.co.uk

SOA 1

ns-225.awsdns-28.com awsdns-hostmaster.amazon.com

TLS Certificates (0)

None.

Subdomains (7)

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 ycombinator.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: db028726-b903-4b0b-814f-1c5d30f519a6
Output Hash: b35e8d3aaeccc4447333483b36043ace8f53f277fcb15663bab46fda31215bd5
Signature: ed25519:04ba483ede861ae2c6743d1497d7bdf170530d4a0661e19dce887b94961754c9220c130d904c38a72e032475f76472d6f031fc273acd939c10fe8cea386a110d
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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