Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
23concrete.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-02 14:03:10 UTC · ↺ Refresh
MX Hostnames
- cmmail.icompendium.com
MX Priorities
- cmmail.icompendium.com: 1
A / AAAA Records
- 159.203.146.85 (no PTR)
Mail Server IPs
- 104.236.116.249 ↩ cmmail.icompendium.com
SOA Record
Raw SOA
nsa.compendiummedia.com hostmaster.icompendium.com 2025051830 28800 7200 604800 86400
Primary NS (mname)
nsa.compendiummedia.com
Admin Email (rname)
hostmaster@icompendium.com
Serial
2025051830
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
nsb.compendiummedia.com
nsa.compendiummedia.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a
📊 DNS lookups: 2/10
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
1 record- SPFv=spf1 mx a
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