crossbar.org
Observed Jul 28, 2026, 17:52 UTC (5h 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
Runs onCloudflare
Email byGoogle Workspace
Secured byLet's Encrypt
tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat crossbar.org actually stands on - every host below is a signed observation
crossbar.org
A / AAAA
54.225.85.243.216.248.20254.165.12.75
Cloudflareserves the site
NS
ns-1077.awsdns-06.orgns-1906.awsdns-46.co.ukns-71.awsdns-08.comns-803.awsdns-36.net
awsdns-06.org + awsdns-46.co.uk + moreanswers its DNS
MX
aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
crossbar.org
Let's Encryptissued its certificate
DNS Records
A 3
54.225.85.243.216.248.20254.165.12.75
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 5
apple-domain-verification=4CWo7FEFPge2zsUsb1962e92-025b-4548-826f-ba18c9a7f890proxy-ssl.webflow.comv=spf1 include:_spf.google.com include:servers.mcsv.net ~allv=DMARC1;p=none;rua=mailto:b4646728a3@rua.easydmarc.com;ruf=mailto:b4646728a3@ruf.easydmarc.com;fo=1;
NS 4
ns-1077.awsdns-06.orgns-1906.awsdns-46.co.ukns-71.awsdns-08.comns-803.awsdns-36.net
SOA 1
ns-71.awsdns-08.com awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
crossbar.org |
C=US, O=Let's Encrypt, CN=YR2 | Mon, 07 Sep 2026 14:03:21 +0000 |
YR2 |
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 (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_834381774a3b0775- Output Hash
625e7182dcb04b58e2a9260eb7a3b32c649164873de5b1e534d52eac3df4804a- Signature
ed25519:d21caa69711fc1a5a5144b8a24d174ff53b120f82520b5bdd119eab7963133fbe6809024ebefaf49c8219f5147600119b9eb554c3ec530b3273ab2a20627a00e- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast