CONTINUOUS INTERNET TELEMETRY24H DRIFT1,801 material changesacross 1,610 domains · +379 vs yesterdayDNS DRIFT2 domains changed DNS providertop destination yandexcloud.net · -19 vs yesterdayEMAIL DRIFT1 domain switched email providertop destination google.com · -4 vs yesterdayNOW1,100 curated domains not answering+390 vs yesterdayERRORS4,931 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED7,743 throttled or blocked our scanner429 rate-limit / 403 bot-blockMOVERtiktok.comDMARC enforcement downgraded: p=reject → no DMARC record24H DRIFT1,801 material changesacross 1,610 domains · +379 vs yesterdayDNS DRIFT2 domains changed DNS providertop destination yandexcloud.net · -19 vs yesterdayEMAIL DRIFT1 domain switched email providertop destination google.com · -4 vs yesterdayNOW1,100 curated domains not answering+390 vs yesterdayERRORS4,931 responded with an errorlast probe · 5xx / 404 / TLSTHROTTLED7,743 throttled or blocked our scanner429 rate-limit / 403 bot-blockMOVERtiktok.comDMARC enforcement downgraded: p=reject → no DMARC record

tandem.com

Observed 2026-07-17T23:07:28.382Z (10h ago). Every field below was attested with an Ed25519 signature at scan time.

Not responding
Runs onCloudflare
Email byProofpoint
Registered withMarkMonitor Inc.
2 subdomains · pharma_biotech
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat tandem.com actually stands on - every host below is a signed observation
tandem.com
A / AAAA
16.230.112.216
Cloudflareserves the site
NS
ns4.hpe.comns1.hpe.comns2.hpe.comns3.hpe.com+4 more
hpe.comanswers its DNS
MX
mxa-002e3701.gslb.pphosted.commxb-002e3701.gslb.pphosted.com
Proofpointreceives its email

HTTPS probe

server_error Server error (5xx) 526 Server Error
HTTP status526
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time645 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

  • 16.230.112.216

MX 2

  • 10mxa-002e3701.gslb.pphosted.com
  • 10mxb-002e3701.gslb.pphosted.com

TXT 1

  • v=DMARC1;p=reject;fo=1;rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

NS 8

  • ns4.hpe.com
  • ns1.hpe.com
  • ns2.hpe.com
  • ns3.hpe.com
  • ns8.hpe.com
  • ns5.hpe.com
  • ns7.hpe.com
  • ns6.hpe.com

SOA 1

  • cha08hpeibdns0a.ams.hpecore.net ddi-hostmaster.groups.ext.hpe.com

TLS Certificates (0)

None.

Subdomains (2)

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

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

Ed25519 Receipt

Receipt ID
7fc331c1-eef2-4c4b-9a68-c6b84d9e2aab
Output Hash
9c61f090b6523f9e16ba922044939268850a77fef3c3e57e37944acd760251ff
Signature
ed25519:b9dd6cf59af4077dd7aa3cce4e124e13d9b59db8507c622585282d1391816eef78e6554fa345b60ac93925f98d89a9681dd88e7dcaffc832f6bf1944466dc001
Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent
(genesis)
Plane
fast
Verify this in your browser