Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
coreext.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 00:38:02 UTC · ↺ Refresh
MX Hostnames
- coreext-com.mail.protection.outlook.com
MX Priorities
- coreext-com.mail.protection.outlook.com: 0
A / AAAA Records
- 3.33.130.190 ↩ a2aa9ff50de748dbe.awsglobalaccelerator.com
- 15.197.148.33 ↩ a2aa9ff50de748dbe.awsglobalaccelerator.com
Mail Server IPs
No IPs resolved.
SOA Record
Raw SOA
ns71.domaincontrol.com dns.jomax.net 2024051303 28800 7200 604800 600
Primary NS (mname)
ns71.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2024051303
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns71.domaincontrol.com
ns72.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:secureserver.net -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- NETORGFT8633149.onmicrosoft.com
- SPFv=spf1 include:secureserver.net -all
- ca3-767f6ca53fd84ee0b1e01144dca456a2
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