Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
clsonline.us
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 19:03:37 UTC · ↺ Refresh
MX Hostnames
- mx5.emailowl.com
- mx4.emailowl.com
- mx6.emailowl.com
MX Priorities
- mx5.emailowl.com: 10
- mx6.emailowl.com: 10
- mx4.emailowl.com: 10
A / AAAA Records
- 107.161.23.204 ↩ parking.namesilo.com
- 209.141.38.71 ↩ parking.namesilo.com
- 198.251.81.30 ↩ parking.namesilo.com
Mail Server IPs
- 45.63.17.188 ↩ mx5.emailowl.com
- 107.191.41.169 ↩ mx6.emailowl.com
- 207.246.121.203 ↩ mx4.emailowl.com
SOA Record
Raw SOA
ns1.dnsowl.com hostmaster.dnsowl.com 1774465332 7200 1800 1209600 600
Primary NS (mname)
ns1.dnsowl.com
Admin Email (rname)
hostmaster@dnsowl.com
Serial
1774465332
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
ns3.dnsowl.com
ns1.dnsowl.com
ns2.dnsowl.com
SPF Record
✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 a mx -all
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