open.edu
Observed 2026-06-13T08:17:04.912Z (3h ago). Every field below was attested with an Ed25519 signature at scan time.
Don't trust this page — check the math. Verification runs entirely in your browser. Nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
07763779-c5be-4587-96bb-9904c648cd75- Output Hash
21483d4ac4360105e5218c5cd7f2affcb42300b07aa569c6ea96cb2fe32dadae- Signature
ed25519:5549f15005f50c4eb2167aa87ea443645b16501488043f786ec92fdffe0f2b7c66645cca02044cc938b35494ff4f42472ee71ed858bd2b3fb7ea9db1c3ecc209- Public Key
ed25519:d3f6015a95abdad7e8166ad80938a5885500170bb75f8cdb425b8fd2772bec29- Parent
(genesis)- Plane
- fast
DNS Records
A 1
137.108.200.104
MX 1
{"priority":10,"exchange":"open-edu.mail.protection.outlook.com"}
TXT 5
v=spf1 include:spf.protection.outlook.com ip4:137.108.232.47 ip4:137.108.232.48 ip4:137.108.170.8 ip4:137.108.170.38 ip4:137.108.170.40 ip4:137.108.185.44 -allgoogle-site-verification=KLQmkBsMNGjV3_nUmOkJw07lK3ZIXeFBPvilow84wXkB6B0975F-29DA-4863-AD9B-4CE3671954EDQuoVadis=9a987046-9ec6-40b4-a739-41ad71aa5c85v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:dmarc@open.ac.uk,mailto:e1pWdXALyij@dmarc-rua.mailcheck.service.ncsc.gov.uk
NS 6
nse-1.open.ac.uknse-0.open.ac.ukdns3.easydns.orgdns1.easydns.comdns2.easydns.netnse-2.open.ac.uk
SOA 1
{"mname":"nse-0.open.ac.uk","rname":"hostmaster.open.ac.uk","serial":626265871,"refresh":1200,"retry":180,"expire":1209600,"minimum":3600}
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
open.edu |
C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication CA OV R36 | Wed, 22 Jul 2026 23:59:59 +0000 |
Sectigo Public Server Authentication CA OV R36 |
C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46 | Fri, 21 Mar 2036 23:59:59 +0000 |
Sectigo Public Server Authentication Root R46 |
C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority | Mon, 18 Jan 2038 23:59:59 +0000 |
USERTrust RSA Certification Authority |
C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority | Mon, 18 Jan 2038 23:59:59 +0000 |