trinseo.com

Observed Jul 21, 2026, 19:14 UTC (18h 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.

Verify this receipt yourself + Watch this domain

Up right now

Runs onAmazon

Email byProofpoint

Secured byLet's Encrypt

Registered withMarkMonitor Inc.

Also usesAtlassian

manufacturing

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

INFRASTRUCTURE MAPwhat trinseo.com actually stands on - every host below is a signed observation

trinseo.com

A / AAAA

54.221.199.186

Amazonserves the site

ns5.markmonitor.comns2.markmonitor.comns3.markmonitor.comns4.markmonitor.com+3 more

markmonitor.comanswers its DNS

mxb-003d9d01.gslb.pphosted.commxa-003d9d01.gslb.pphosted.com

Proofpointreceives its email

TLS

trinseo.com

Let's Encryptissued its certificate

DNS Records

A 1

54.221.199.186

MX 2

10mxb-003d9d01.gslb.pphosted.com
10mxa-003d9d01.gslb.pphosted.com

TXT 8

MS=ms43438854
pml0p6dl3898jy0d4c3fd3rgwz7s4n0w
apple-domain-verification=61lFywYMD33x3Lgv
apple-domain-verification=I9vS3CMM2SIhOCwE
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all
cisco-ci-domain-verification=4ec75cb1f2d14f74dfb7c1873e0acdc0ec73e3c612eb176961208cab170aeca5
atlassian-domain-verification=rD/LQJyQjXat8YPKwZRufahJXwxfQjRS7/saTktHK/5bpaUVqas2aHFTH6Sh408A
v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;

NS 7

ns5.markmonitor.com
ns2.markmonitor.com
ns3.markmonitor.com
ns4.markmonitor.com
ns1.markmonitor.com
ns6.markmonitor.com
ns7.markmonitor.com

SOA 1

ns1.markmonitor.com hostmaster.markmonitor.com

TLS Certificates (4)

Common Name	Issuer	Expires
`trinseo.com`	C=US, O=Let's Encrypt, CN=YE2	Fri, 11 Sep 2026 15:46:30 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for trinseo.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_f23c7c60f9dc48cc
Output Hash: 6c52dd34bdb1f196c68dc17289e0ed2f5da1e55b00a39a8c045f9689645140d0
Signature: ed25519:65da85dae5b875dc368052c129f04b629a007765c5e7b91abad6ed97081bf8a9dde522b78ca2e8c1ef9032d830ffa742f99acec9e4311fe044d8168ef7a80801
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/trinseo.com