readwise.io

Observed 2026-07-13T00:18:10.604477680+00:00 (11h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search Console

IPv6 · push_legacy

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

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

readwise.io

A / AAAA

104.26.9.37172.67.69.113104.26.8.372606:4700:20::681a:925+2 more

Cloudflareserves the site

cory.ns.cloudflare.comines.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

readwise.io

Let's Encryptissued its certificate

DNS Records

A 3

104.26.9.37
172.67.69.113
104.26.8.37

AAAA 3

2606:4700:20::681a:925
2606:4700:20::ac43:4571
2606:4700:20::681a:825

MX 5

1aspmx.l.google.com
10aspmx2.googlemail.com
10aspmx3.googlemail.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 4

google-site-verification=ABiKSFlHNxUfwI5JOFykth2ygQOEMiJ3osZ3fNWBm8U
google-site-verification=iS7iy4KrUrmoe7nVdj7OOCerNSzkJ4hKvZLeq7wJjj0
v=spf1 a mx include:helpscoutemail.com include:_spf.google.com ~all
v=DMARC1; p=none; pct=100; rua=mailto:re+tkydlrijcub@dmarc.postmarkapp.com; sp=none; aspf=r;

NS 2

cory.ns.cloudflare.com
ines.ns.cloudflare.com

SOA 1

cory.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (4)

Common Name	Issuer	Expires
`readwise.io`	C=US, O=Let's Encrypt, CN=YE1	Wed, 07 Oct 2026 20:56:43 +0000
`YE1`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	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 readwise.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 5681e338-7ca3-458d-9ae4-6860be91c6a4
Output Hash: e2d77bfdfcf8801cae0cc9947c31d4c93c715e0ff116321c007e8b636222c7ab
Signature: ed25519:f7094ce8baeef2849615d1c351cfbda2c0451eb0cccae058d6a1749f5b78c0b605fd1c3b719e059871c61e8cec9155baaad9640de8af0990314306f40bac1b00
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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