Domain Overview
DNS: ✓ 1d ago
Checker: ✓ 1d ago
comillas.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 22:01:38 UTC · ↺ Refresh
MX Hostnames
- comillas-edu.mail.protection.outlook.com
MX Priorities
- comillas-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 130.206.64.225 ↩ ic4225.comillas.edu
Mail Server IPs
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.upcomillas.es hostmaster.upcomillas.es 2026052001 43200 7200 604800 7200
Primary NS (mname)
ns1.upcomillas.es
Admin Email (rname)
hostmaster@upcomillas.es
Serial
2026052001
Refresh
43200s
Retry
7200s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
sun.rediris.es
chico.rediris.es
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:amazonses.com include:myopenlms.net include:eu.rp.oracleemaildelivery.com include:spf_c.oraclecloud.com a:correo.upcomillas.es a:correo.comillas.edu ip4:94.127.186.25 ip4:94.127.186.24 ip4:130.206.64.228 ip4:134.170.206.11 ip4:94.23.120.168 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=r; aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
default._domainkey
s1._domainkey
s2._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
18 records- UghrCLCbTwl2agmXuG3yetJXxIpZ5G3Iw+3Vt34XYS/gPpXWFkL7RQ7gTIbEiOG1RqYQXnhzMqdUHrgQF193qA==
- facebook-domain-verification=110s7jr5igpy74heznol1lbeweus5x
- Q12y3DmymUPg6umRaaTPnXrMlvAoIiyhixCQhLpBNX/Nv086HKGlI7DIuZEQR7TuvZ38CQNeTP5eAA2ygCPXkA==
- brevo-code:b1414e0a234265a2faa294058248ae06
- google-gws-recovery-domain-verification=50067462
- Probely=f0ca6b12-9cae-4c22-baac-8dfac9b307d6
- atlassian-domain-verification=hE2TtzNrL0MxM7t9eYMJ0jcjJN5FIpGMlSzTXymKaGs83nlMNPnZK04YZIfMWlCo
- d365mktkey=AsbJCgxWFVZH2lTlqwBWM15j5C9RQ3BN09Xamei22Eox
- SPFv=spf1 include:spf.protection.outlook.com include:amazonses.com include:myopenlms.net include:eu.rp.oracleemaildelivery.com include:spf_c.oraclecloud.com a:correo.upcomillas.es a:correo.comillas.edu ip4:94.127.186.25 ip4:94.127.186.24 ip4:130.206.64.228 ip4:134.170.206.11 ip4:94.23.120.168 -all
- google-site-verification=r8lqZWdo9w389tNaRp7IlR-EZV1_y9-xG7Vdq9k8m-g
- MS=ms30225604
- sophos-domain-verification=5bb975091a7692199391ae8ba02bcfe8794a6de1
- MsldH6UHI/cTdvObQD1BhaF3N6ByjB/Q7r9GInAGXx4J6SbuqAo7CZACHD5aRGlcmB4NXVHU8RJfvlycQY3ydw==
- 0IB0VGMW5RB2AXDMQKFXLGV9M23Y3DXRPKZP2YGT
- adobe-idp-site-verification=2782cd9a839e40cba3e7ac93ae55e545d6b6bcd003e1381ae43ed28e43ec1235
- autodesk-domain-verification=4MBmR_jM7HgaZYSHba5K
- HARICA-o0HlMsspwTy2lm8aebS
- anthropic-domain-verification-3qs423=sDrLxx1MArIW4dFK4f1RxCvQy
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 · Customize →
See demo & docs
Deep verification
Full email verification for comillas.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits