tandem.com
Observed Jul 24, 2026, 17:52 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.
Not responding
Runs onHP
Email byProofpoint
Registered withMarkMonitor Inc.
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
HPserves the site
NS
ns6.hpe.comns5.hpe.comns4.hpe.comns7.hpe.com+4 more
hpe.comanswers its DNS
MX
mxb-002e3701.gslb.pphosted.commxa-002e3701.gslb.pphosted.com
Proofpointreceives its email
DNS Records
A 1
16.230.112.216
MX 2
10mxb-002e3701.gslb.pphosted.com10mxa-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
ns6.hpe.comns5.hpe.comns4.hpe.comns7.hpe.comns2.hpe.comns8.hpe.comns1.hpe.comns3.hpe.com
SOA 1
cha08hpeibdns0a.ams.hpecore.net ddi-hostmaster.groups.ext.hpe.com
TLS Certificates (0)
None.
Subdomains (0)
None observed.
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 receiptPut 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.
<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
rcpt_e03b97ef819d8d5e- Output Hash
598b2e5909afea3fd6e6571b4f13fdb3279d7d961e38ee7df880e32c9f157c2e- Signature
ed25519:d26ff7acda87c580fdf44fcd33da83993d8baa56ee92367002dd843a0d1abc9ec5cf5904f4f568e1bea2212ac99d265849c1dce56932df06f21fc1acfa514d02- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast