Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duersoncorporation.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 00:11:43 UTC · ↺ Refresh
MX Hostnames
- duersoncorporation-com.mail.protection.outlook.com
MX Priorities
- duersoncorporation-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.192.131 (no PTR)
- 104.21.51.251 (no PTR)
- 2606:4700:3033::6815:33fb
- 2606:4700:3037::ac43:c083
Mail Server IPs
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
SOA Record
Raw SOA
aida.ns.cloudflare.com dns.cloudflare.com 2399381755 10000 2400 604800 1800
Primary NS (mname)
aida.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399381755
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
duke.ns.cloudflare.com
aida.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com -all include:242470879.spf10.hubspotemail.net
📊 DNS lookups: 2/10
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 include:spf.protection.outlook.com -all include:242470879.spf10.hubspotemail.net
- MS=ms55688292
- brevo-code:a0f51d617803094a388bc21f390d3d1b
- facebook-domain-verification=arh2m0f8cw25l12ev84r48x3tnj5a2
- google-site-verification=nhXElaXpffH4_TVGY5hymwpQ0UWTFHU6nu4Kl_3wU_Y
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