Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ckddenver.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 04:03:47 UTC · ↺ Refresh
MX Hostnames
- ckddenver-com.mail.protection.outlook.com
MX Priorities
- ckddenver-com.mail.protection.outlook.com: 0
A / AAAA Records
- 50.87.6.125 ↩ 50-87-6-125.unifiedlayer.com
Mail Server IPs
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.rhostbh.com root.rsb26.rhostbh.com 2024040100 86400 7200 3600000 300
Primary NS (mname)
ns1.rhostbh.com
Admin Email (rname)
root@rsb26.rhostbh.com
Serial
2024040100
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
300s
Nameservers (NS)
ns2.rhostbh.com
ns1.rhostbh.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
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
3 records- MS=ms94802450
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=oBMDS1Wwp7yOwY5E2kmg4qXAc3fkO167k7g9vwsZk_A
Full email verification for ckddenver.com
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