leanpub.com

Observed 2026-07-14T18:24:36.011Z (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Also usesGoogle Search Console

IPv6 · 4 subdomains · tranco_40k

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

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

leanpub.com

A / AAAA

18.239.199.2618.239.199.8318.239.199.12818.239.199.100+8 more

Cloudflareserves the site

ns-576.awsdns-08.netns-1693.awsdns-19.co.ukns-1390.awsdns-45.orgns-389.awsdns-48.com

awsdns-08.net + awsdns-19.co.uk + moreanswers its DNS

aspmx.l.google.com

Google Workspacereceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time62 ms

DNS resolutionNOERROR

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

DNS Records

A 4

18.239.199.26
18.239.199.83
18.239.199.128
18.239.199.100

AAAA 8

2600:9000:25ef:3200:6:744:8980:93a1
2600:9000:25ef:e800:6:744:8980:93a1
2600:9000:25ef:7600:6:744:8980:93a1
2600:9000:25ef:9c00:6:744:8980:93a1
2600:9000:25ef:1c00:6:744:8980:93a1
2600:9000:25ef:4800:6:744:8980:93a1
2600:9000:25ef:8000:6:744:8980:93a1
2600:9000:25ef:fa00:6:744:8980:93a1

MX 1

0aspmx.l.google.com

TXT 3

google-site-verification=zoRXbAIm861EKd5VTW9pSjE9SmF0G12EWQit--QX-RI
v=spf1 a mx include:spf.mtasv.net include:spf.mail.intercom.io include:servers.mcsv.net include:_spf.google.com -all
v=DMARC1; p=none; pct=100; rua=mailto:re+yy4bkel2e8n@dmarc.postmarkapp.com; sp=none; aspf=r;

NS 4

ns-576.awsdns-08.net
ns-1693.awsdns-19.co.uk
ns-1390.awsdns-45.org
ns-389.awsdns-48.com

SOA 1

ns-576.awsdns-08.net awsdns-hostmaster.amazon.com

TLS Certificates (0)

None.

Subdomains (4)

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

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

Ed25519 Receipt

Receipt ID: 8a4d83dc-3e45-4386-b9db-eacadcff8904
Output Hash: e233856f68a50a2e98f655adfa16bafcd6e09135ac0cd7d1c105ed54b8bd6e3c
Signature: ed25519:147a8d1dded4c0f146ca99b5af35a1993d34fb29ea5f9595c6eb65cfd895a3a7bd8adfc98b4ed52241ed0911c4987dbb5c07a4f7d125e5a07a1a5012545c670e
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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