nu3.org.co

Valid Email Server
Domain Lookup › nu3.org.co

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
nu3.org.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 23:44:07 UTC · ↺ Refresh

MX Hostnames

  • nu3-org-co.mail.protection.outlook.com

MX Priorities

  • nu3-org-co.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.177.39 (no PTR)
  • 104.21.80.96 (no PTR)
  • 2606:4700:3033::ac43:b127
  • 2606:4700:3035::6815:5060

Mail Server IPs

  • 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
  • 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
  • 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
  • 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA dean.ns.cloudflare.com dns.cloudflare.com 2397603717 10000 2400 604800 1800
Primary NS (mname)
dean.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397603717
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

dean.ns.cloudflare.com
fatima.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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

3 records
  • MS=8B117A4E92556F8A1763A71BB4254908E3D00EC4
  • MS=ms73807814
  • SPFv=spf1 include:spf.protection.outlook.com -all
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