Domain Overview
DNS: โ 2mo ago
Checker: โ 2mo ago
duarteusd.org
Yes
โ Yes
Unknown
No
No
โ Yes
No
No
Checked via [email protected]
ยท 2026-03-18 05:59:28 UTC ยท โบ Refresh
MX Hostnames
- ussf34.upstreamsecurity.net
- ussf55.upstreamsecurity.net
- ussf542.upstreamsecurity.net
- ussf342.upstreamsecurity.net
- ussf54.upstreamsecurity.net
- ussf552.upstreamsecurity.net
MX Priorities
- ussf54.upstreamsecurity.net: 1
- ussf55.upstreamsecurity.net: 1
- ussf34.upstreamsecurity.net: 1
- ussf542.upstreamsecurity.net: 20
- ussf552.upstreamsecurity.net: 20
- ussf342.upstreamsecurity.net: 20
A / AAAA Records
- 104.16.158.133 (no PTR)
- 104.16.159.133 (no PTR)
- 104.18.189.233 (no PTR)
- 104.18.190.233 (no PTR)
Mail Server IPs
- 38.99.86.54 โฉ USSF54.upstreamsecurity.net
- 38.99.86.55 โฉ USSF55.upstreamsecurity.net
- 38.99.86.34 โฉ USSF34.upstreamsecurity.net
- 50.145.4.54 โฉ USSF542.upstreamsecurity.net
- 50.145.4.55 โฉ USSF552.upstreamsecurity.net
SOA Record
Raw SOA
ns27.domaincontrol.com dns.jomax.net 2025082801 28800 7200 604800 600
Primary NS (mname)
ns27.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025082801
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns28.domaincontrol.com
ns27.domaincontrol.com
SPF Record
โ Soft Fail (~all)
v=spf1 +mx include:spf.protection.outlook.com include:_spf.google.com ip4:204.102.96.19 ip4:173.198.1.139 ip4:10.2.16.103 ~all
๐ DNS lookups: 3/10
~ Soft fail (~all) โ moderate enforcement
DMARC Record
โ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
โ Reject โ strongest protection
๐ SPF alignment: Relaxed
ยท DKIM alignment: Relaxed
๐ง Reports โ mailto:[email protected]
โณ Subdomain policy: reject
DKIM Selectors
โ 5 found
google._domainkey
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
โ Public key: 392 chars (valid)
โ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- MS=ms73616036
- RS3VIVbUMtFeWVTkJfBO7RpkRH9xTjJGZTswTVmKG6gX2UlPx7oMbw9v7jx9GhdbNhO+tPlZB04IuunEpKitrg==
- adobe-idp-site-verification=6df3bbcbbb9f12c129900d156a0a6734256414cb6a29988f013fdb7e8595a785
- apple-domain-verification=ZVJnQXbHWtmaZzLp
- SPFv=spf1 +mx include:spf.protection.outlook.com include:_spf.google.com ip4:204.102.96.19 ip4:173.198.1.139 ip4:10.2.16.103 ~all
- google-site-verification=vGcb8A_l1McvMke4FhXqC03wX5mGpRSCNiVwpj-xRUQ
Free ยท No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts โ unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for duarteusd.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits