Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ddn.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 06:01:13 UTC · ↺ Refresh
MX Hostnames
- d298737a.ess.barracudanetworks.com
- d298737b.ess.barracudanetworks.com
MX Priorities
- d298737a.ess.barracudanetworks.com: 5
- d298737b.ess.barracudanetworks.com: 10
A / AAAA Records
- 141.193.213.10 (no PTR)
- 141.193.213.11 (no PTR)
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
a1.uberns.com hostmaster.ddn.com 2603220000 14400 7200 259200 3600
Primary NS (mname)
a1.uberns.com
Admin Email (rname)
hostmaster@ddn.com
Serial
2603220000
Refresh
14400s
Retry
7200s
Expire
259200s
Minimum TTL
3600s
Nameservers (NS)
b1.uberns.com
a1.uberns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:ips.ddn.com include:vendors.ddn.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=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]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- atlassian-domain-verification=/G1itNhHaFVBaaUGuwRrFI8OWjmKavba2iDXK1zm7DO4jYq39mMS7LvMlE6Q9jK8
- figma-domain-verification=0334afd6a04ab19b77a0740e6c20058efd655c4c851f0a1f2f413ab88bbec31b-1768347606
- SPFv=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:ips.ddn.com include:vendors.ddn.com -all
- asv=34584849d6a37f246276cd3d44a95e8c
- mandrill_verify.DHWmr8245BYagI7565LJhQ
- apple-domain-verification=i6bAWBWAjUwd5AjT
- google-gws-recovery-domain-verification=55983246
- google-site-verification=eWR9OFJeKxvP5T-wJ86zmuEDejvo54DOIcqF5gXCbXM
- notion-domain-verification=n38jNS7GunbbecgylcmpeU27L8hRqJ5GgmfyjOUE5Iv
- pardot1010042=3e202986e6b2d7b10ff551d2077e735e2c144f066541e52a211793d51834d8cb
Full email verification for ddn.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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