CONTINUOUS INTERNET TELEMETRY24H DRIFT2,263 material changesacross 2,061 domains · +304 vs yesterdayDNS DRIFT19 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT8 domains switched email providertop destination outlook.com · +5 vs yesterdayNOW3,916 curated domains not answering+487 vs yesterdayERRORS8,524 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED2,335 throttled or blocked our scanner429 rate-limit / 403 bot-block24H DRIFT2,263 material changesacross 2,061 domains · +304 vs yesterdayDNS DRIFT19 domains changed DNS providertop destination cloudflare.comEMAIL DRIFT8 domains switched email providertop destination outlook.com · +5 vs yesterdayNOW3,916 curated domains not answering+487 vs yesterdayERRORS8,524 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED2,335 throttled or blocked our scanner429 rate-limit / 403 bot-block

postmark.com

Observed 2026-07-15T09:11:16.550Z (10h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
Registered withMarkMonitor Inc.
1 subdomain · push_legacy
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat postmark.com actually stands on - every host below is a signed observation
postmark.com
A / AAAA
3.131.150.69
Cloudflareserves the site
NS
ns3.dnsimple.comns4.dnsimple-edge.orgns1.dnsimple.comns2.dnsimple-edge.net
dnsimple.com + dnsimple-edge.org + moreanswers its DNS

HTTPS probe

redirect Redirecting (3xx) 301 → https://postmarkapp.com
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time429 ms
DNS resolutionNOERROR
Redirect chain
https://postmarkapp.com

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

DNS Records

A 1

  • 3.131.150.69

NS 4

  • ns3.dnsimple.com
  • ns4.dnsimple-edge.org
  • ns1.dnsimple.com
  • ns2.dnsimple-edge.net

SOA 1

  • ns1.dnsimple.com admin.dnsimple.com

TLS Certificates (0)

None.

Subdomains (1)

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

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

Ed25519 Receipt

Receipt ID
53e72c31-f56b-4989-bdd4-3f7ff3a1eaec
Output Hash
15da9083a1afc3c046ffdccffb8bbe51e405965d6bf7b6d34fbbbbc8eef80a0b
Signature
ed25519:b78db9b8c8102128fd428cae18b2ba0754677e1694881de3edc674f8b3283ee2ba8a32944e763d19064ef13c4acccd882ea74f94fb3b31b5c18a82fd49cf6706
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser