customonline.com

Valid Email Server
Domain Lookup › customonline.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
customonline.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 00:04:05 UTC · ↺ Refresh

MX Hostnames

  • d109925a.ess.barracudanetworks.com
  • d109925b.ess.barracudanetworks.com

MX Priorities

  • d109925a.ess.barracudanetworks.com: 10
  • d109925b.ess.barracudanetworks.com: 20

A / AAAA Records

  • 151.101.2.159 (no PTR)

Mail Server IPs

  • 209.222.82.255 ↩ mail.ess.barracuda.com
  • 209.222.82.252 ↩ mail.ess.barracuda.com
  • 209.222.82.253 ↩ mail.ess.barracuda.com

SOA Record

Raw SOA ns2.verio.com namehost.worldnic.com 126030914 10800 3600 604800 3600
Primary NS (mname)
ns2.verio.com
Admin Email (rname)
namehost@worldnic.com
Serial
126030914
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns1.verio.com
ns2.verio.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:63.116.101.25 ip4:69.74.173.50 ip4:69.74.173.35 ip4:69.74.173.36 ip4:63.116.101.35 a mx include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:autotask.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim

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

All TXT Records

11 records
  • SPFv=spf1 ip4:63.116.101.25 ip4:69.74.173.50 ip4:69.74.173.35 ip4:69.74.173.36 ip4:63.116.101.35 a mx include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:autotask.net -all
  • 323s9nldklvjsjmsbp1sng2o7r
  • duo_sso_verification=5qzwGHLu1hoXdxxZ4arYv0tMMb7gLm1zRyC8iMdPZ22vFtAzDIeQnq14z2RqlhYN
  • gj33g7kqt5tjbu8so6cv4no0rd
  • apple-domain-verification=uu9f4Nk3ZhoYYhgL
  • AJ3bnxI1Dh7McNSUWk+4YSGFZVc9Njcf0mew6mSPm+vki/jq45JTLuIwINa06qo0TX8YVdRx8+HbrdtU+jRzIw==
  • 6n7gu7vi754634765kkbe63vri
  • knowbe4-site-verification=659da416a42b0bc0b02eab9ad4ff433e
  • OFBhFWgcMgWdRMZfsfDeVb7bKubVmUn5cJvBF78/EjK8V25/w5nsI/I78AXD9Js6Z6Gl+5biKMImcg1iVyKS5w==
  • www.surveymonkey.com/s.aspx?sm=PKPjWNfprhzrHVC36E_2fM2w_3d_3d
  • 289ol96rorpf3be94gfjqv97cd
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