Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
riewoldt.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 13:52:10 UTC · ↺ Refresh
MX Hostnames
- riewoldt-de.mail.protection.outlook.com
MX Priorities
- riewoldt-de.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.199 ↩ 217-160-0-199.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::240 ↩ 2001-08d8-100f-f000-0000-0000-0000-0240.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.166.0 ↩ mail-pa5p264cu00200.inbound.protection.outlook.com
- 52.101.164.0 ↩ mail-mrzp264cu00100.inbound.protection.outlook.com
- 52.101.166.2 ↩ mail-paup264cu00202.inbound.protection.outlook.com
- 52.101.166.1 ↩ mail-pr0p264cu01301.inbound.protection.outlook.com
- 2a01:111:f403:ca25::2 ↩ mail-paup264cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca1e:: ↩ mail-mrzp264cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca25::1 ↩ mail-pr0p264cu01301.inbound.protection.outlook.com
- 2a01:111:f403:ca25:: ↩ mail-pa5p264cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1124.ui-dns.org hostmaster.kundenserver.de 2017071428 28800 7200 604800 300
Primary NS (mname)
ns1124.ui-dns.org
Admin Email (rname)
hostmaster@kundenserver.de
Serial
2017071428
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1124.ui-dns.org
ns1124.ui-dns.de
ns1124.ui-dns.biz
ns1124.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:46.41.19.96/27 ip4:46.41.17.96/27 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
3 records- MS=ms46746226
- SPFv=spf1 include:spf.protection.outlook.com ip4:46.41.19.96/27 ip4:46.41.17.96/27 -all
- MS=ms24386992
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 riewoldt.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits