Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
unisinu.edu.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 14:54:54 UTC · ↺ Refresh
MX Hostnames
- unisinu-edu-co.mail.protection.outlook.com
MX Priorities
- unisinu-edu-co.mail.protection.outlook.com: 10
A / AAAA Records
- 213.158.84.22 ↩ ns70351.webempresa.eu
Mail Server IPs
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns70351.webempresa.eu ns70352.webempresa.eu 2022080527 3600 1800 1209600 86400
Primary NS (mname)
ns70351.webempresa.eu
Admin Email (rname)
ns70352@webempresa.eu
Serial
2022080527
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns70352.webempresa.eu
ns70351.webempresa.eu
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:51.91.62.175 ip4:213.158.84.22 include:_spf.webempresa.eu +a +mx +include:spf.protection.outlook.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
default._domainkey
mail._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
5 records- brevo-code:db3c466bbccabb08224935408189e24d
- brevo-code:d31b607ac50f8f4861d126c25e10cdbc
- amazonses:9VCvsuMPs2dfU+sXk76dUw0qxeejl0TFzCXHN4ql2XM=
- SPFv=spf1 ip4:51.91.62.175 ip4:213.158.84.22 include:_spf.webempresa.eu +a +mx +include:spf.protection.outlook.com ~all
- facebook-domain-verification=a28gow1jidefvx987rls7csyjmt8gh
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 unisinu.edu.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits