centum-rt.com

Valid Email Server
Domain Lookup › centum-rt.com

Domain Overview

DNS: ✓ just now Checker: ✓ just now
centum-rt.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-23 09:55:45 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • centumrt-com01e.mail.protection.outlook.com

MX Priorities

  • centumrt-com01e.mail.protection.outlook.com: 10

A / AAAA Records

  • 45.84.208.216 ↩ cpanel.centum.es

Mail Server IPs

  • 52.101.103.140 ↩ mail-miypr02cu00204.inbound.protection.outlook.com
  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca48::e ↩ mail-miypr03cu00206.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::24 ↩ mail-am6pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca38::8 ↩ mail-wa4pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca21::10 ↩ mail-matpr05cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns.gestiondecuenta.com dnsadmin.gestiondecuenta.com 2025092501 3600 120 1209600 300
Primary NS (mname)
ns.gestiondecuenta.com
Admin Email (rname)
dnsadmin@gestiondecuenta.com
Serial
2025092501
Refresh
3600s
Retry
120s
Expire
1209600s
Minimum TTL
300s

Nameservers (NS)

ns.gestiondecuenta.com
ns3.gestiondecuenta.com
ns4.gestiondecuenta.com
ns2.gestiondecuenta.com

SPF Record

✓ Strict (-all)
v=spf1 +mx:smtp.centum-rt.com +ip4:82.223.190.32 +ip4:217.76.128.0 +ip4:45.84.210.142 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

4 records
  • google-site-verification=4-Rapo62Wiy0eg_KTsiVdOGtGF1GGpXAQYjq29Y_0Hw
  • MS=E03D0B53E970FF1A4D5B6B231D3B54B93D31E0C0
  • google-site-verification=mZmPsV8skqwGmoi3OTw-QggzuRFr_Vm4A94Ofhb3AcU
  • SPFv=spf1 +mx:smtp.centum-rt.com +ip4:82.223.190.32 +ip4:217.76.128.0 +ip4:45.84.210.142 include:spf.protection.outlook.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 · Customize →
See demo & docs
Deep verification
Full email verification for centum-rt.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits