Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duncanaviation.aero
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 04:43:37 UTC · ↺ Refresh
MX Hostnames
- duncanaviation-aero.mail.protection.outlook.com
MX Priorities
- duncanaviation-aero.mail.protection.outlook.com: 10
A / AAAA Records
- 34.231.175.234 ↩ ec2-34-231-175-234.compute-1.amazonaws.com
- 44.212.203.71 ↩ ec2-44-212-203-71.compute-1.amazonaws.com
- 54.158.49.77
Mail Server IPs
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns10.dnsmadeeasy.com dns.dnsmadeeasy.com 2009010763 43200 3600 1209600 180
Primary NS (mname)
ns10.dnsmadeeasy.com
Admin Email (rname)
dns@dnsmadeeasy.com
Serial
2009010763
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns11.dnsmadeeasy.com
ns12.dnsmadeeasy.com
ns10.dnsmadeeasy.com
ns13.dnsmadeeasy.com
ns15.dnsmadeeasy.com
ns14.dnsmadeeasy.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 include:spf.protection.outlook.com -all
- 4Hf7hkvQ/OQnnO5Ln1g3lJ9Dbw6xSm0soi92cytOb6lC6eY0/GirKOcKGXMOdoqH77EJ6gZuyhY1d6zvRJ+iJQ==
- ovg7u0s05efr182v3mhq91kifv
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 duncanaviation.aero
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits