20f1rst.com

No Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
20f1rst.com
No
None
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-22 21:04:57 UTC · ↺ Refresh

MX Hostnames

No MX records found.

MX Priorities

No priority data.

A / AAAA Records

  • 34.42.100.71 ↩ 71.100.42.34.bc.googleusercontent.com

Mail Server IPs

No IPs resolved.

SOA Record

Raw SOA ns1.unstoppabledomains.com ns.unstoppabledomains.com 2026032002 900 300 604800 600
Primary NS (mname)
ns1.unstoppabledomains.com
Admin Email (rname)
ns@unstoppabledomains.com
Serial
2026032002
Refresh
900s
Retry
300s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns2.unstoppabledomains.com
ns1.unstoppabledomains.com

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

No TXT records found.

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 20f1rst.com

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

No credit card required
Get 1,000 Free Credits