rdrr.io

Observed 2026-07-17T15:14:24.718469311+00:00 (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search Console

tranco_100k

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

INFRASTRUCTURE MAPwhat rdrr.io actually stands on - every host below is a signed observation

rdrr.io

A / AAAA

51.81.83.12

unattributedserves the site

ns-1181.awsdns-19.orgns-15.awsdns-01.comns-1820.awsdns-35.co.ukns-669.awsdns-19.net

awsdns-19.org + awsdns-01.com + moreanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

rdrr.io

Let's Encryptissued its certificate

DNS Records

A 1

51.81.83.12

MX 5

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

TXT 2

google-site-verification=gD2lbBR99ElUI15KAG_W6mYqXZ8uShHt7g5nDgYY7oY
yandex-verification: 3ea3262abe63a8ad

NS 4

ns-1181.awsdns-19.org
ns-15.awsdns-01.com
ns-1820.awsdns-35.co.uk
ns-669.awsdns-19.net

SOA 1

ns-669.awsdns-19.net awsdns-hostmaster.amazon.com

TLS Certificates (3)

Common Name	Issuer	Expires
`rdrr.io`	C=US, O=Let's Encrypt, CN=YR1	Thu, 08 Oct 2026 12:55:46 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +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 rdrr.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 3d4ddcea-ce8b-4cf4-803a-da635cf948f6
Output Hash: 2b3d01e3bb86c80266bf081e185ae8be24026596d073f6355dcc5a7704d70430
Signature: ed25519:564d40c72f51c332cb66c36e08653cda750bcfe66c3ad4e68dc5890dee39720fa99325e717e86081cc2f1c6b526c0b9ed3376d61bad778395f47faa68c44f10f
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/rdrr.io