citigroup.com
Observed Jul 21, 2026, 19:11 UTC (1d 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 onAkamai International B.V
Email byProofpoint
Secured byDigiCert
Registered withCSC Corporate Domains, Inc.
Also usesFacebook/MetaGoogle Search Console
4 subdomains · banks
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat citigroup.com actually stands on - every host below is a signed observation
citigroup.com
A / AAAA
104.96.178.165104.94.222.171
Akamai International B.Vserves the site
NS
ns1.nsroot1.comns2.nsroot2.com
nsroot1.com + nsroot2.comanswers its DNS
MX
mx-a.mail.citi.commx-b.mail.citi.com
Proofpointreceives its email
TLS
www.citi.com
DigiCert Incissued its certificate
DNS Records
A 2
104.96.178.165104.94.222.171
MX 2
5mx-a.mail.citi.com5mx-b.mail.citi.com
TXT 17
MS=ms92288257MS=617A9E7598377F278D9D3B8CEBB893E897E4391Dfacebook-domain-verification=2amqbctg7cv6hq0dxq4tf107b3y0znglobalsign-domain-verification=5333822B44304398DE567C2747872C29webexdomainverification.9L49J=8ea68d0a-1e43-4ae8-9f61-f0dc3a1ba394google-site-verification=B2RTefeDQDD6q_djOf22I7ncFCBM1hs0OuR29V5rbbogoogle-site-verification=Lu5ecxuGzVLD5xOgdMcF244KOFnquxxCegkBp8DUuBYgoogle-site-verification=W1oZvZ4pAy7ASU5vtQdbeLvsM-BLaTkQqUKHkEfkKW8google-site-verification=a5KdIF5qvy8oEnllolMuPZkvHZiN39w_Sc_wqWtJZDIgoogle-site-verification=aFfLeCV8R5dO_bwkfnkyLB-RaRNaZ_vYRC_yM_z6rSM
NS 2
ns1.nsroot1.comns2.nsroot2.com
SOA 1
ns1.nsroot1.com hostmaster.citi.com
CAA 4
iodef "mailto:CAADNS@citi.com"issue "digicert.com"issue "globalsign.com"issuewild ""
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
www.citi.com |
C=US, O=DigiCert Inc, CN=DigiCert EV RSA CA G2 | Thu, 08 Oct 2026 23:59:59 +0000 |
DigiCert EV RSA CA G2 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 | Tue, 02 Jul 2030 12:42:50 +0000 |
Subdomains (4)
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_405b34d8f0e455d5- Output Hash
6b55dce61ceb77e4f00244d3005291a140805d4e6618dc6d614155eb31c09f9d- Signature
ed25519:7eb6fb8f14c883f08431c53138abe9680e7505fdf00ca2ff666fa825069bcb144b16dee93d3b3cd78a96400b405b0a5741ecfd09907870eed723afaa235d1804- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast