ursu.ca
Observed Jul 26, 2026, 08:55 UTC (7d 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
Email byGoogle Workspace
majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat ursu.ca actually stands on - every host below is a signed observation
ursu.ca
A / AAAA
138.197.141.102
unattributedserves the site
NS
ns1.netfirms.comns2.netfirms.com
netfirms.comanswers its DNS
MX
alt4.aspmx.l.google.comaspmx.l.google.comalt1.aspmx.l.google.comalt3.aspmx.l.google.com+1 more
Google Workspacereceives its email
DNS Records
A 1
138.197.141.102
MX 5
10alt4.aspmx.l.google.com1aspmx.l.google.com5alt1.aspmx.l.google.com10alt3.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 2
v=spf1 include:_spf.google.com include:spf.mandrillapp.com ~allv=DMARC1; p=none;
NS 2
ns1.netfirms.comns2.netfirms.com
SOA 1
ns1.netfirms.com dnsadmin.netfirms.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 receiptEd25519 Receipt
- Receipt ID
rcpt_504a87f56e7942fd- Output Hash
88aec5c61e24711e7cf4b1e6dde21c595a5f5e4372e8b027428388916a0e2273- Signature
ed25519:2872f41df47919b7ffcad2195bc286324b79f6f7f4a67774338268e2d0da759aa32b189d88c7f945e309e24b4d649a3ed0d0029b7b30bd5ec9b8a59272c01307- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast