occ.gov

Valid Email Server
Domain Lookup › occ.gov

Domain Overview

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

Checked via [email protected] · 2026-04-01 14:19:23 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • cemailhub1in.treasury.gov
  • cwmailhub1in.treasury.gov

MX Priorities

  • cwmailhub1in.treasury.gov: 10
  • cemailhub1in.treasury.gov: 10

A / AAAA Records

  • 199.83.40.54 (no PTR)
  • 2610:108:8001:101::54 (no PTR)

Mail Server IPs

  • 166.123.9.40 ↩ cwmailhub1in.treasury.gov
  • 2610:108:4100:100c::9:40 (no PTR)
  • 164.95.9.40 ↩ cemailhub1in.treasury.gov
  • 2610:108:3100:100c::9:40 (no PTR)

SOA Record

Raw SOA margot.ns.cloudflare.com dns.cloudflare.com 2399357285 10000 2400 604800 1800
Primary NS (mname)
margot.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399357285
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

margot.ns.cloudflare.com
tadeo.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 redirect=_spf.occ.gov
📊 DNS lookups: 1/10

DMARC Record

✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],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

2 records
  • SPFv=spf1 redirect=_spf.occ.gov
  • xyx6ztg322k79bhlfvpqpq3j78m49r8s
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 · Customize →
See demo & docs
Deep verification
Full email verification for occ.gov

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

No credit card required
Get 1,000 Free Credits