massschoolbuildings.org
Observed Aug 16, 2026, 07:28 UTC (2h 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
Secured byLet's Encrypt
Let's EncryptAlso usesMicrosoft 365
Microsoft 3651 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat massschoolbuildings.org actually stands on - every host below is a signed observation
massschoolbuildings.org
A / AAAA
209.59.154.27
unattributedserves the site
NS
dns1.stabletransit.comdns2.stabletransit.com
stabletransit.comanswers its DNS
MX
d57298a.ess.barracudanetworks.comd57298b.ess.barracudanetworks.com
barracudanetworks.comreceives its email
TLS
massschoolbuildings.org
Let's Encryptissued its certificate
DNS Records
A 1
209.59.154.27
MX 2
0d57298a.ess.barracudanetworks.com10d57298b.ess.barracudanetworks.com
TXT 3
4kRpCs7l53QZ0eqYefLRWfYqJYMHgE1w5RahdjGHdVbr/W4EjK1UZ/XncwiN9DkBBhJjPIIismmCvZh/GY/VSQ==MS=ms35402660v=spf1 include:spf.protection.outlook.com ~all
NS 2
dns1.stabletransit.comdns2.stabletransit.com
SOA 1
dns1.stabletransit.com ipadmin.stabletransit.com
DMARC_RECORDS 1
v=DMARC1; p=quarantine; fo=1; rua=mailto:rua+massschoolbuildings.org@dmarc.barracudanetworks.com; ruf=mailto:ruf+massschoolbuildings.org@dmarc.barracudanetworks.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
massschoolbuildings.org |
C=US, O=Let's Encrypt, CN=YR1 | Fri, 30 Oct 2026 06:04:36 +0000 |
YR1 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
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_0765f44fd1087a5a- Output Hash
d1be3244bcfd60c582e10af28b4654b21c509d0c1cdc8fe4631d329c880ae334- Signature
ed25519:0a04dd7b926d59eb3823638fabfacfc2107196d544661e38cc73bae09a272468ee01453bc8176bf849154ea4f24a473194ee6fb896f5bd115f8e5e130471ea02- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast