Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koldeconcrete.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 07:19:31 UTC · ↺ Refresh
MX Hostnames
- koldeconcrete-com.mail.protection.outlook.com
MX Priorities
- koldeconcrete-com.mail.protection.outlook.com: 10
A / AAAA Records
- 20.9.40.140 (no PTR)
Mail Server IPs
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.nxio.net dns.nxio.net 2024121004 7200 1800 1209600 3600
Primary NS (mname)
ns1.nxio.net
Admin Email (rname)
dns@nxio.net
Serial
2024121004
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns1.nxio.net
ns3.nxio.net
ns2.nxio.net
ns4.nxio.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:64.6.123.18 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:64.6.123.18 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:sendgrid.net -all
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