osf.io

Observed 2026-07-15T07:16:24.878Z (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byMailgun

tranco_10k

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

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

osf.io

A / AAAA

35.190.84.173

Cloudflareserves the site

ns-cloud-e3.googledomains.comns-cloud-e1.googledomains.comns-cloud-e4.googledomains.comns-cloud-e2.googledomains.com

googledomains.comanswers its DNS

mxa.mailgun.orgmxb.mailgun.org

Mailgunreceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/3

TLS issuernot observed

Behind Cloudflareyes

Response time66 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 1

35.190.84.173

MX 2

10mxa.mailgun.org
10mxb.mailgun.org

TXT 2

v=spf1 include:servers.mcsv.net include:mailgun.org include:spf.mandrillapp.com include:helpscoutemail.com -all
v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@osf.io,mailto:dmarc_agg@vali.email; ruf=mailto:dmarc@osf.io

NS 4

ns-cloud-e3.googledomains.com
ns-cloud-e1.googledomains.com
ns-cloud-e4.googledomains.com
ns-cloud-e2.googledomains.com

SOA 1

ns-cloud-e1.googledomains.com dns.openscienceframework.org

CAA 1

issue letsencrypt.org

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 osf.io. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: 7a40d17c-281f-4602-bfca-9bde9ef8659e
Output Hash: 28efa3bb1c8fb5df6b24bf64bab7b4cc606e06e9b0abb6c43faf88bde9ac93dc
Signature: ed25519:00aaa2fa32d94a18065bc6ee4423bc8151985c144325a973706fbfb54098c5e4ecb321fef0f9fa63097aacba08132cdd02e930f33055231cbb6b81648dfc8307
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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