ycombinator.com

Observed Jul 21, 2026, 20:05 UTC (6h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Secured byAmazon

Registered withGandi SAS

Also usesZoomGoogle Search Console

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

108.138.64.90108.138.64.8108.138.64.111108.138.64.45

Cloudflareserves the site

ns-1411.awsdns-48.orgns-1914.awsdns-47.co.ukns-225.awsdns-28.comns-556.awsdns-05.net

awsdns-48.org + awsdns-47.co.uk + moreanswers its DNS

aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx4.googlemail.com

Google Workspacereceives its email

TLS

ycombinator.com

Amazonissued its certificate

DNS Records

A 4

108.138.64.90
108.138.64.8
108.138.64.111
108.138.64.45

MX 4

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

TXT 14

MS=ms37374900
Wayback verify for support request 741082
ZOOM_verify_2ndw8KZxSRa8PT8NmdyXvw
anthropic-domain-verification-0qe2ww=yK576oHdDgyTcXgkPfj1KXgGt
apple-domain-verification=WG0sP5Alm7N6h1Te
ca3-4861b957e83847c188e45d04ec314ee3
dropbox-domain-verification=asc63coma4mv
google-site-verification=GJKdQskycEclAGPua3yXB9m_nVhxbrsVps_y-t9SXV0
google-site-verification=KsI69Y_jEVkp4eXqSQ9R9gwxjIpZznvuvrus6UolB9Y
google-site-verification=rivq8jKu6AADGtbbEzJhmOpcqq08B7QxIzXxYV8DtyU

NS 4

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

SOA 1

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

SRV 5

alt1.xmpp-server.l.google.com:5269 p20
alt2.xmpp-server.l.google.com:5269 p20
alt3.xmpp-server.l.google.com:5269 p20
alt4.xmpp-server.l.google.com:5269 p20
xmpp-server.l.google.com:5269 p5

TLS Certificates (3)

Common Name	Issuer	Expires
`ycombinator.com`	C=US, O=Amazon, CN=Amazon RSA 2048 M04	Fri, 08 Jan 2027 23:59:59 +0000
`Amazon RSA 2048 M04`	C=US, O=Amazon, CN=Amazon Root CA 1	Fri, 23 Aug 2030 22:26:35 +0000
`Amazon Root CA 1`	C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2	Thu, 31 Dec 2037 01:00:00 +0000

Subdomains (0)

None observed.

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: rcpt_1d914ee2e05de2f7
Output Hash: ea4025fe8dc6d2b54cac912d59eb43b4521bc382389c9357c1dccd62ce975a69
Signature: ed25519:b9bab4898183c3f2b82c4728893e1908ab1af61bfb7ed9b7f10c61d7e1c71798183e88eea1104422773df252d5ee66aa69e52c62e2980b6b7de11da415cd1f0b
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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