jrcptb.org.uk
Observed Aug 16, 2026, 10:33 UTC (6h 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
Microsoft 365Secured byLet's Encrypt
Let's EncryptAlso usesKnowBe4
KnowBe41 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat jrcptb.org.uk actually stands on - every host below is a signed observation
jrcptb.org.uk
A / AAAA
136.244.66.38
unattributedserves the site
NS
ns47.domaincontrol.comns48.domaincontrol.com
domaincontrol.comanswers its DNS
MX
jrcptb-org-uk.mail.protection.outlook.com
Microsoft 365receives its email
TLS
jrcptb.org.uk
Let's Encryptissued its certificate
DNS Records
A 1
136.244.66.38
MX 1
0jrcptb-org-uk.mail.protection.outlook.com
TXT 4
knowbe4-site-verification=73cbbe9b4cb1bac62bb5c292ebde662d3s4fq6eoc6rdq9mc9qeeognlb8K2igfJoKTHqsU47VFmPbiXn/m7qH3hxLcqrzH7xQyxeKfwA3ct60apJ9M8sZW0UN+jALVrCrMb6p3QsnYTftPg==v=spf1 include:_u.jrcptb.org.uk._spf.smart.ondmarc.com ~all
NS 2
ns47.domaincontrol.comns48.domaincontrol.com
SOA 1
ns47.domaincontrol.com dns.jomax.net
DMARC_RECORDS 1
v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:5ae23d1b@inbox.ondmarc.com; ruf=mailto:5ae23d1b@inbox.ondmarc.com; adkim=r; aspf=r; fo=0; rf=afrf; ri=3600
MTA_STS_RECORDS 1
v=STSv1; id=1722497054822
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
jrcptb.org.uk |
C=US, O=Let's Encrypt, CN=YE1 | Tue, 06 Oct 2026 12:28:25 +0000 |
YE1 |
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 (1)
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_27d68b14522011b6- Output Hash
2022f25e55a85ae74dc77e9274fc10e9993510febfc92b68f517e78668e0110f- Signature
ed25519:5b3d6b73fa28c92fd2c1d0a47faa492355f30dbda1e3fad9eb35e65fdd2420a570fbe3f5d680d8084d5e5bf8ad37e875c6311cb7f8f5f87d4bf9e6a1d60b880f- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast