citibank.com

Valid Email Server
Domain Lookup › citibank.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
citibank.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-21 00:43:50 UTC · ↺ Refresh

MX Hostnames

  • mx-a.mail.citi.com
  • mx-b.mail.citi.com

MX Priorities

  • mx-b.mail.citi.com: 5
  • mx-a.mail.citi.com: 5

A / AAAA Records

  • 104.96.178.165 ↩ a104-96-178-165.deploy.static.akamaitechnologies.com
  • 104.94.222.171 ↩ a104-94-222-171.deploy.static.akamaitechnologies.com

Mail Server IPs

  • 67.231.153.94 ↩ mx-b.mail.citi.com
  • 67.231.145.106 ↩ mx-a.mail.citi.com

SOA Record

Raw SOA nusgtdc-edns01.nsroot.net hostmaster.citi.com 2021103597 3600 300 2419200 3600
Primary NS (mname)
nusgtdc-edns01.nsroot.net
Admin Email (rname)
hostmaster@citi.com
Serial
2021103597
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

ns2.nsroot2.com
ns1.nsroot1.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a:mail.citigroup.com ip4:217.29.160.12 ip4:84.45.73.5 include:spf-00123c01.pphosted.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

7 records
  • google-site-verification=l0yLgWkGs-ik3cNg8LCqI4IRtJe_qvzRYILtrnQ-L4E
  • paloaltonetworks-site-verification=59fcee26fb9ae46cb912e8ec453faa3b82c65ee0e94f7fb7de1a59b07e9b8cf3
  • SPFv=spf1 a:mail.citigroup.com ip4:217.29.160.12 ip4:84.45.73.5 include:spf-00123c01.pphosted.com ~all
  • postman-domain-verification=80f5e8b5b0eb9d94f6c42fc72ee42bef0585ba996bddeeda33442ee5f1db593d4aede826d4d6e58b40be0681a2f40b86aff5238e76c95e449c963bad2e3ffc14
  • VISA=2E2D03BABFF0208352B6A802723F7BD4
  • facebook-domain-verification=3afsyr7t6cmarl3sc8dfohlz53n4ho
  • google-site-verification=kZISuG3O5lKpwO_y-LOv8wR6wuDt8TVjeU8hzFVlI4s
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for citibank.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits