Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
osbb365.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 18:27:52 UTC · ↺ Refresh
MX Hostnames
- mail.softproject.com.ua
MX Priorities
- mail.softproject.com.ua: 0
A / AAAA Records
- 161.97.144.35 ↩ vmi486880.contaboserver.net
Mail Server IPs
- 81.4.123.39 ↩ mail.softproject.com.ua
- 2a00:d880:5:154::c87d ↩ mail.softproject.com.ua
SOA Record
Raw SOA
micah.ns.cloudflare.com dns.cloudflare.com 2398631393 10000 2400 604800 1800
Primary NS (mname)
micah.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398631393
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
zita.ns.cloudflare.com
micah.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip6:2a00:d880:5:154::c87d/64 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rf=afrf; pct=100; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 mx ip6:2a00:d880:5:154::c87d/64 -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 osbb365.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits