concepts4.nl

Valid Email Server
Domain Lookup › concepts4.nl

Domain Overview

DNS: ✓ 19d ago Checker: ✓ 19d ago
concepts4.nl
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 21:25:47 UTC · ↺ Refresh

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MX Hostnames

  • concepts4-nl.mail.protection.outlook.com

MX Priorities

  • concepts4-nl.mail.protection.outlook.com: 0

A / AAAA Records

  • 213.249.67.10 ↩ mijndomeinhosting.nl
  • 2a01:448:2001::10 (no PTR)

Mail Server IPs

  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA nsn1.mijndomein.nl hostmaster.concepts4.nl 2026052101 86400 3600 604800 3600
Primary NS (mname)
nsn1.mijndomein.nl
Admin Email (rname)
hostmaster@concepts4.nl
Serial
2026052101
Refresh
86400s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

nsn2.mijndomein.nl
nsn1.mijndomein.nl

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.mailer.twinfield.com include:spf.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.mailer.twinfield.com include:spf.emailsignatures365.com -all
  • MS=ms43937721
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