Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
aprender21.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 13:46:08 UTC · ↺ Refresh
MX Hostnames
- mail.aprender21.com
MX Priorities
- mail.aprender21.com: 0
A / AAAA Records
- 149.50.142.250 ↩ vps-4520453-x.dattaweb.com
Mail Server IPs
- 149.50.142.250 ↩ vps-4520453-x.dattaweb.com
SOA Record
Raw SOA
ns3.hostmar.com root.hostmar.com 2026031700 28800 7200 2000000 86400
Primary NS (mname)
ns3.hostmar.com
Admin Email (rname)
root@hostmar.com
Serial
2026031700
Refresh
28800s
Retry
7200s
Expire
2000000s
Minimum TTL
86400s
Nameservers (NS)
ns2.donweb.com
ns1.donweb.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.hostmar.com ip4:149.50.142.250 ip6:2800:6c0:5::117c include:spf.mandrillapp.com include:amazonses.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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- google-site-verification=qg1dMqx7B4T30S6aOF4uuvQflqkhK46inHckfOJCQRA
- SPFv=spf1 include:spf.hostmar.com ip4:149.50.142.250 ip6:2800:6c0:5::117c include:spf.mandrillapp.com include:amazonses.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
See demo & docs
Deep verification
Full email verification for aprender21.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits