1cero1.com

Valid Email Server
Domain Lookup › 1cero1.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
1cero1.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-26 00:03:13 UTC · ↺ Refresh

MX Hostnames

  • mail.1cero1.com

MX Priorities

  • mail.1cero1.com: 0

A / AAAA Records

  • 201.184.190.107 ↩ sanpedro-sucre.gov.co
  • 2800:e7:29a:c000::2 (no PTR)

Mail Server IPs

  • 181.143.126.122 ↩ sanvicentedelcaguan-alcaldia.gov.co

SOA Record

Raw SOA ns01.domaincontrol.com dns.jomax.net 2026031201 28800 7200 604800 600
Primary NS (mname)
ns01.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031201
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns01.domaincontrol.com
ns02.domaincontrol.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a ip4:201.184.190.106/29 ip4:181.143.126.122/29 ip4:181.143.18.194 ip4:181.129.121.210/29 a:mail.1cero1.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; adkim=r; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

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

All TXT Records

7 records
  • SPFv=spf1 a ip4:201.184.190.106/29 ip4:181.143.126.122/29 ip4:181.143.18.194 ip4:181.129.121.210/29 a:mail.1cero1.com ~all
  • google-site-verification=cjBtV_EufI70P9OtQcM7c6L75G3_9l4CenBr46Il7WA
  • google-site-verification=zX-fKGNquCkvEn49_VFo1PfuShk3KNVYjnJPb0DmQTs
  • google-site-verification=Wss0Y8UrzAWiY2dxZLg4qiwpUXvDPiyDVU05J8zfzcU
  • google-site-verification=uTrAGjZFOFLfPkKNAvsFLreclsbm0SzjYai0dhUi8po
  • google-gws-recovery-domain-verification=57792801
  • v=verifydomain MS=6926590
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 1cero1.com

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

No credit card required
Get 1,000 Free Credits