Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duvesco.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 04:12:36 UTC · ↺ Refresh
MX Hostnames
- duvesco-com.mail.protection.outlook.com
MX Priorities
- duvesco-com.mail.protection.outlook.com: 10
A / AAAA Records
- 197.221.2.106 ↩ dedi6.cpt1.host-h.net
Mail Server IPs
- 52.101.160.0 ↩ mail-jnyp275cu00200.inbound.protection.outlook.com
- 52.101.162.1 ↩ mail-ct2p275cu01101.inbound.protection.outlook.com
- 52.101.162.0 ↩ mail-ct2p275cu01000.inbound.protection.outlook.com
- 52.101.160.1 ↩ mail-jn3p275cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca2a::1 ↩ mail-ct2p275cu01101.inbound.protection.outlook.com
- 2a01:111:f403:ca28:: ↩ mail-jnyp275cu00200.inbound.protection.outlook.com
- 2a01:111:f403:ca2a:: ↩ mail-ct2p275cu01000.inbound.protection.outlook.com
- 2a01:111:f403:ca28::1 ↩ mail-jn3p275cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.host-h.net postmaster.duvesco.com 20260311 86400 1800 3600000 86400
Primary NS (mname)
ns1.host-h.net
Admin Email (rname)
postmaster@duvesco.com
Serial
20260311
Refresh
86400s
Retry
1800s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.dns-h.com
ns2.host-h.net
ns1.host-h.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 217 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 include:spf.protection.outlook.com -all
- ujl9t31nd9ds2ph1utg219pda
- 7ughrpsml5lr7ml21obm1ks75j
- d15urei53gq7q5nc5nc7rj0r89
- JKPS6BS19CF6QSFU1G8C8OKT22
- ihgot9t0d9r2509lqhibnhof1h
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 duvesco.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits