mathcad.com
Observed Aug 11, 2026, 03:15 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.
mathcad.com is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting mathcad.com under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.
Watch mathcad.com Watching a domain needs a DRM3 account. The reading above stays free and public either way.
GlobalSign
Google Search Console
Microsoft 365DNS Records
A 1
40.117.169.225
TXT 12
identrust_validate=KYbTnS4TZuIn3xbLe/yM54cVTBH/VX/5abTWlrw3zCcov=spf1-allidentrust_validate=CJstNV9Hyr4Ort5//vWTC/V2gqYb2157y3zMxrLBrzlTgoogle-site-verification=GEG60FJ0W8WJPsqzSOod16D5puCu7QZLSrsQ-_t6S38identrust_validate=Bj+YU9yymZcOE55BL/anmwT4KV6Cy32GaMycbZjgOVgmMS=ms96402272identrust_validate=iDMG5CNmdiksI9WTIYswYQ93IFje+UFVFT42cn9ZXSV4globalsign-domain-verification=250977fd22998ad1e36bb8e746bacdfaTV1+jdDJO3bK2SatWx1MC23HDIVD5VFjyCTimbr4Wi1zidentrust_validate=KXTOePYjPjEGjVVCjS8MklmMCO6+rVztWf8D3kHawLBf
NS 6
a12-66.akam.neta2-65.akam.neta9-65.akam.neta5-67.akam.neta1-247.akam.neta10-67.akam.net
SOA 1
dns.ptc.com please_set_email.absolutely.nowhere
CAA 9
issue "awstrust.com"issue "amazontrust.com"iodef "mailto:Security-IT-Engineering@ptc.com"issue "identrust.com"issue "letsencrypt.org"issue "globalsign.com"issue "digicert.com"issue "amazon.com"issue "amazonaws.com"
DMARC_RECORDS 1
v=DMARC1;p=reject;pct=100;rua=mailto:pdfwnemw@ag.us.dmarcian.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.mathcad.com |
C=US, O=IdenTrust, 2.5.4.11=HydrantID Trusted Certificate Service, CN=HydrantID Server CA O1 | Mon, 26 Oct 2026 17:31:33 +0000 |
HydrantID Server CA O1 |
C=US, O=IdenTrust, CN=IdenTrust Commercial Root CA 1 | Wed, 12 Dec 2029 16:56:15 +0000 |
IdenTrust Commercial Root CA 1 |
C=US, O=IdenTrust, CN=IdenTrust Commercial Root CA 1 | Mon, 16 Jan 2034 18:12:23 +0000 |
Subdomains (4)
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_8bc6f08663b6cd03- Output Hash
aec4fc3e5e32d08e8716b618c9df2c406c214a4af3ee3e0c8765b2e7be85150c- Signature
ed25519:be00cf6dccbd7d1072220a1406a5a7e0747086e7e727fb5a030ddb1afdd8c24901eb196e326a7e9ae17d608bde5866a2b5a1206266fbd25b18c22ea1b894ad01- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast