e-teaching.org
Observed Jul 25, 2026, 14:53 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.
Up right now
Email byMicrosoft 365
Secured byHellenic Academic and Research Institutions CA
2 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat e-teaching.org actually stands on - every host below is a signed observation
e-teaching.org
A / AAAA
134.2.234.120
unattributedserves the site
NS
dns1.iwm-kmrc.dedns1.belwue.dedeneb.dfn.dedns4.uni-tuebingen.de
iwm-kmrc.de + belwue.de + moreanswers its DNS
MX
eteaching-org0c.f-v1.mx.microsoft
Microsoft 365receives its email
TLS
e-teaching.org
Hellenic Academic and Research Institutions CAissued its certificate
DNS Records
A 1
134.2.234.120
MX 1
0eteaching-org0c.f-v1.mx.microsoft
TXT 4
HARICA-CFuvK6NB3EOMs2VFgYev=spf1 ip4:134.2.234.99/32 include:spf.protection.outlook.com -allMS=ms43054521v=DMARC1; p=none; rua=mailto:b2742db3@in.mailhardener.com,mailto:dmarc@dmarc.iwm-tuebingen.de; ruf=mailto:b2742db3@in.mailhardener.com,mailto:dmarc@dmarc.iwm-tuebingen.de
NS 4
dns1.iwm-kmrc.dedns1.belwue.dedeneb.dfn.dedns4.uni-tuebingen.de
SOA 1
dns1.iwm-kmrc.de sysadmin.iwm-kmrc.de
CAA 3
issue "pki.dfn.de"issue "sectigo.com"issue "harica.gr"
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
e-teaching.org |
C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1 | Fri, 11 Dec 2026 08:24:04 +0000 |
GEANT TLS RSA 1 |
C=GR, O=Hellenic Academic and Research Institutions CA, CN=HARICA TLS RSA Root CA 2021 | Sat, 31 Dec 2039 11:14:59 +0000 |
HARICA TLS RSA Root CA 2021 |
C=GR, L=Athens, O=Hellenic Academic and Research Institutions Cert. Authority, CN=Hellenic Academic and Research Institutions RootCA 2015 | Fri, 31 Aug 2029 07:41:54 +0000 |
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 receiptEd25519 Receipt
- Receipt ID
rcpt_3517fa57ed961173- Output Hash
5e0517e3617b77f3779ed1619faf3882853c0758035c0f2e364059dee3e9fd37- Signature
ed25519:d528e6df9dda897d1cc9e47d7a6b6db8238aff91f9e86fbd90938c41003e9e7a3846c78f1bf8ff7d2c16c6ac607c707c6cab9488671bad0e48bcd50f4598a60f- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast