Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
udenar.edu.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 12:09:31 UTC · ↺ Refresh
MX Hostnames
- udenar-edu-co.mail.protection.outlook.com
MX Priorities
- udenar-edu-co.mail.protection.outlook.com: 0
A / AAAA Records
- 192.68.185.48 ↩ www.udenar.edu.co
Mail Server IPs
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.udenar.edu.co root.ns.udenar.edu.co 3136 3600 900 1209600 43200
Primary NS (mname)
ns.udenar.edu.co
Admin Email (rname)
root@ns.udenar.edu.co
Serial
3136
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
43200s
Nameservers (NS)
ns.udenar.edu.co
SPF Record
✓ Strict (-all)
v=spf1 mx ptr ip4:192.68.185.235 ip4:192.68.185.16 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; adkim=r; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
3 records- SPFv=spf1 mx ptr ip4:192.68.185.235 ip4:192.68.185.16 include:spf.protection.outlook.com -all
- 0fn12qrrlgbwnhb4tj79tzt3pblwrq98
- _gz0i0vb75e1g9bv714gpuhzzufdj5op
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for udenar.edu.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits