Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hendersonspec.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 09:04:56 UTC · ↺ Refresh
MX Hostnames
- hendersonspec-com.mail.protection.outlook.com
MX Priorities
- hendersonspec-com.mail.protection.outlook.com: 10
A / AAAA Records
- 66.76.82.212 (no PTR)
Mail Server IPs
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns55.worldnic.com namehost.worldnic.com 118103009 10800 3600 604800 3600
Primary NS (mname)
ns55.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
118103009
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns56.worldnic.com
ns55.worldnic.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
2 records- MS=ms54478147
- SPFv=spf1 include:spf.protection.outlook.com -all
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