Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
polimerbio.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-23 04:56:00 UTC · ↺ Refresh
MX Hostnames
- polimerbio-com.mail.protection.outlook.com
MX Priorities
- polimerbio-com.mail.protection.outlook.com: 10
A / AAAA Records
- 82.98.190.105 ↩ vl24666.dinaserver.com
Mail Server IPs
- 52.101.209.31 ↩ mail-cpjpr05cu00207.inbound.protection.outlook.com
- 52.101.91.162 ↩ mail-matpr04cu00302.inbound.protection.outlook.com
- 52.101.103.140 ↩ mail-miypr02cu00204.inbound.protection.outlook.com
- 52.101.181.153 ↩ mail-wa4pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c967::8 ↩ mail-cpjpr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca38::a ↩ mail-wa4pr05cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.gestiondecuenta.com dnsadmin.gestiondecuenta.com 2026060101 3600 120 1209600 300
Primary NS (mname)
ns.gestiondecuenta.com
Admin Email (rname)
dnsadmin@gestiondecuenta.com
Serial
2026060101
Refresh
3600s
Retry
120s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns2.gestiondecuenta.com
ns3.gestiondecuenta.com
ns.gestiondecuenta.com
ns4.gestiondecuenta.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
2 records- MS=ms95014666
- SPFv=spf1 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 polimerbio.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits