proofpoint.us

Observed 2026-07-15T05:24:50.792Z (14h ago). Every field below was attested with an Ed25519 signature at scan time.

Not responding

Runs onCloudflare

Registered withMarkMonitor, Inc.

Also usesGoogle Search Console

1 subdomain · tranco_5k

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

INFRASTRUCTURE MAPwhat proofpoint.us actually stands on - every host below is a signed observation

proofpoint.us

pdns99.ultradns.netns3.proofpoint.uspdns99.ultradns.comns1.proofpoint.us+2 more

ultradns.net + proofpoint.us + moreanswers its DNS

HTTPS probe

server_error Server error (5xx) 530 Server Error

HTTP status530

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time15 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

TXT 3

google-site-verification=Q6cT74STOZBjhYT40iXmeZmsFcX3lLeNXjVoO9tefd4
v=spf1 -all
v=DNSSEC1; (detected)

NS 6

pdns99.ultradns.net
ns3.proofpoint.us
pdns99.ultradns.com
ns1.proofpoint.us
pdns99.ultradns.org
pdns99.ultradns.biz

SOA 1

ns1.proofpoint.com ops.proofpoint.com

TLS Certificates (0)

None.

Subdomains (1)

ns1.proofpoint.us

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 proofpoint.us. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: b36edab3-3ac9-4f4f-a44d-c37798f8735f
Output Hash: 621fb249965f1eacac42559f960ed0aae9f6139eaddb2cfac6033dbd2ae07dae
Signature: ed25519:487614309f5cf0c392f395518453f9d399ce24e74e5ff26f593a9f7ba58546e6d8d94fadc7edc40bad87d86c4466d0da826d51f0d1320e0bcc08c228927b3303
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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