Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
atreo.io
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 08:25:40 UTC · ↺ Refresh
MX Hostnames
- atreo-io.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 18.217.171.146
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns43.domaincontrol.com
ns44.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:mailgun.org include:spf.protection.outlook.com include:mail.zendesk.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 6 found
google._domainkey
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
7 records- google-site-verification=K2_tBIPkCC36Zj8uo1A4al3PDLzpW1y-KsDuowc3w9Q
- SPFv=spf1 include:mailgun.org include:spf.protection.outlook.com include:mail.zendesk.com -all
- google-site-verification=g5mgTx1XSCNKOe9shEvDOBnNhW2ZH5NH8YxLDjLbQQU
- v=verifydomain MS=1518288
- rippling-domain-verification=cd72cb304ffe80e5
- google-site-verification=ZTJLTNiHnDt1jVbj9HsaveF45mkPj4LjaBayuN3f44w
- google-site-verification=3HAr3oF_dD6imCmKhMpHBBObQbk5b8MukGmZ21rmRXs
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 atreo.io
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits