Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
pt.lu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 19:34:28 UTC · ↺ Refresh
MX Hostnames
- mx.pt.lu
MX Priorities
- mx.pt.lu: 10
A / AAAA Records
- 195.46.252.19 ↩ www.pt.lu
Mail Server IPs
- 194.154.212.4 ↩ smtpout1.pt.lu
SOA Record
Raw SOA
ns1.pt.lu hostmaster.ns1.pt.lu 2026033000 10800 3600 2419200 600
Primary NS (mname)
ns1.pt.lu
Admin Email (rname)
hostmaster@ns1.pt.lu
Serial
2026033000
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
600s
Nameservers (NS)
ns2.pt.lu
ns1.pt.lu
ns3.pt.lu
SPF Record
✓ Strict (-all)
v=spf1 +ip4:194.154.192.0/25 +ip4:194.154.212.0/27 +ip4:195.46.255.224/27 +ip4:213.166.54.224/27 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- vfc0pn419lr71chsgs4m6vbk5zmr95cr
- google-site-verification=2jobaml-GkPc0WKDyAHL0bxa-c8iIOXpSgZesGYlpeA
- SPFv=spf1 +ip4:194.154.192.0/25 +ip4:194.154.212.0/27 +ip4:195.46.255.224/27 +ip4:213.166.54.224/27 -all
- nt60t5nb038tm5d81ffpq7l1hp34g2cl
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 pt.lu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits