estremar.com

Valid Email Server
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
estremar.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-23 00:46:02 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

  • estremar-com.mail.protection.outlook.com

MX Priorities

  • estremar-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 192.99.180.211 ↩ hstl5.pccorp.com.ar

Mail Server IPs

  • 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
  • 52.101.60.71 ↩ mail-bn0pr02cu00307.inbound.protection.outlook.com
  • 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
  • 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f803:: ↩ mail-byapr02cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:f90a::8 ↩ mail-bn0pr05cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com

SOA Record

Raw SOA ns0.pragmacode.com hostmaster.pragmacode.com 2016031739 1200 600 1296000 3600
Primary NS (mname)
ns0.pragmacode.com
Admin Email (rname)
hostmaster@pragmacode.com
Serial
2016031739
Refresh
1200s
Retry
600s
Expire
1296000s
Minimum TTL
3600s

Nameservers (NS)

ns2.pragmacode.com
ns0.pragmacode.com
ns1.pragmacode.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100; adkim=r; aspf=r; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

3 records
  • m4s-54@-TUF
  • SPFv=spf1 include:spf.protection.outlook.com ~all
  • MS=4346F3A305E43EB520DCFAFF4E35CF403BD80DA7
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 estremar.com

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

No credit card required
Get 1,000 Free Credits