Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cckbuilders.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 13:35:14 UTC · ↺ Refresh
MX Hostnames
- cckbuilders-com.mail.protection.outlook.com
MX Priorities
- cckbuilders-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.49.47 (no PTR)
- 172.67.158.211 (no PTR)
- 2606:4700:3034::ac43:9ed3
- 2606:4700:3034::6815:312f
Mail Server IPs
- 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
lucy.ns.cloudflare.com dns.cloudflare.com 2398726504 10000 2400 604800 1800
Primary NS (mname)
lucy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398726504
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
seth.ns.cloudflare.com
lucy.ns.cloudflare.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
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- NETORGFT6061025.onmicrosoft.com
- SPFv=spf1 include:spf.protection.outlook.com -all
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