rb-com.com
Observed Aug 16, 2026, 17:08 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
Email byMicrosoft 365
Microsoft 365Secured byLet's Encrypt
Let's Encrypt1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat rb-com.com actually stands on - every host below is a signed observation
rb-com.com
A / AAAA
138.197.72.109
unattributedserves the site
NS
ns5.rb-com.comns4.rb-com.comns2.rb-com.comns3.rb-com.com
rb-com.comanswers its DNS
MX
rbcom-com0e.mail.protection.outlook.com
Microsoft 365receives its email
TLS
www.rb-com.com
Let's Encryptissued its certificate
DNS Records
A 1
138.197.72.109
MX 1
10rbcom-com0e.mail.protection.outlook.com
TXT 2
v=spf1 include:spf.protection.outlook.com ip4:143.198.140.180 ip4:107.170.243.131 ip4:159.89.134.163 ip4:138.197.213.218 ip4:50.189.2.17 ip4:159.65.77.53 ip4:143.198.73.181 ip4:162.243.160.192 ip4:45.55.85.86 ip4:138.197.72.109 ip4:138.197.198.18 ip4:8.12.58.0/24 ip4:8.34.161.0/24 ip4:8.224.10.0/24 ip4:213.212.96.64/27 ip4:185.217.59.0/24 ip4:162.244.87.54/32 ip4:139.28.145.128/26 exists:%{i}._spf.elasticemail.info-allMS=ms71868640
NS 4
ns5.rb-com.comns4.rb-com.comns2.rb-com.comns3.rb-com.com
SOA 1
ns2.rb-com.com rsa.rb-com.com
DMARC_RECORDS 1
v=DMARC1; p=none; pct=100; fo=1; rua=mailto:rb-dmarc@rb-com.com;
TLS Certificates (5)
| Common Name | Issuer | Expires |
|---|---|---|
www.rb-com.com |
C=US, O=Let's Encrypt, CN=YE2 | Sun, 20 Sep 2026 12:13:07 +0000 |
www.rb-com.com |
C=US, O=Let's Encrypt, CN=YE2 | Sun, 20 Sep 2026 12:13:07 +0000 |
YE2 |
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_34791385c9675db8- Output Hash
ed360e1e6629d5e16674807168596e2bd413bdf15795f1dcf7fcc111f886e173- Signature
ed25519:6121841cd2c9f206e28d03cd8cc61b48543b1c1f10a99d6c5d42ea3097ab7dce16642a807fdca802ca064dfe38986f71558468883fb23866d533844bbf47e00c- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast