Domain Overview
DNS: ✓ 2h ago
Checker: ✓ 2h ago
onsbrabantnet.nl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 05:06:13 UTC · ↺ Refresh
MX Hostnames
- mx.kpnmail.nl
MX Priorities
- mx.kpnmail.nl: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 195.121.65.158 ↩ mailin.simyo.nl
SOA Record
Raw SOA
ns1.kpn.net zonemaster.kpn.com 2026051401 86400 7200 3600000 172800
Primary NS (mname)
ns1.kpn.net
Admin Email (rname)
zonemaster@kpn.com
Serial
2026051401
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
172800s
Nameservers (NS)
ns11.kpn.net
ns1.kpn.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.ews.kpnxchange.com ?all
📊 DNS lookups: 1/10
? Neutral (?all) — no enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=r; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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
2 records- MS=ms19357173
- SPFv=spf1 include:spf.ews.kpnxchange.com ?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 onsbrabantnet.nl
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits