Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
colegioaleman.edu.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 03:22:52 UTC · ↺ Refresh
MX Hostnames
- colegioaleman-edu-co.mail.protection.outlook.com
MX Priorities
- colegioaleman-edu-co.mail.protection.outlook.com: 0
A / AAAA Records
- 3.132.103.102 ↩ ec2-3-132-103-102.us-east-2.compute.amazonaws.com
Mail Server IPs
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
dns0.zoneedit.com zone.zoneedit.com 1772810456 2400 360 1209600 300
Primary NS (mname)
dns0.zoneedit.com
Admin Email (rname)
zone@zoneedit.com
Serial
1772810456
Refresh
2400s
Retry
360s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns13.zoneedit.com
ns4.zoneedit.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all include:email.freshservice.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
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
✓ 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- apple-domain-verification=zVMeETXF3r3OIWea
- sophos-domain-verification=38289db9c1c5b885d61164eebd3ff22bffa0a111ab63dca5751fa3563ea43c50
- SPFv=spf1 include:spf.protection.outlook.com -all include:email.freshservice.com -all
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 colegioaleman.edu.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits