Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gsp-berlin.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 20:06:31 UTC · ↺ Refresh
MX Hostnames
- gspberlin-de0i.mail.protection.outlook.com
MX Priorities
- gspberlin-de0i.mail.protection.outlook.com: 20
A / AAAA Records
- 109.237.140.48 ↩ alfa3201.alfahosting-server.de
Mail Server IPs
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
SOA Record
Raw SOA
ns01.versatel.de hostmaster.versatel.de 2025031100 86400 28800 3600000 86400
Primary NS (mname)
ns01.versatel.de
Admin Email (rname)
hostmaster@versatel.de
Serial
2025031100
Refresh
86400s
Retry
28800s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns01.versatel.de
ns02.versatel.de
ns04.versatel.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:195.50.187.130 include:spf.protection.outlook.com -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
4 records- h1tadjel1uvth1ep13vpj899vk
- SPFv=spf1 ip4:195.50.187.130 include:spf.protection.outlook.com -all
- y8k2/sPaz8ohi3ktR/fDABXHpYB4yjzqOm4gmWuxPLJwW9ey96K4oO7CvwUWUtdWOrd8McH1ZiE5h4MQIR9FOQ==
- MS=ms60961775
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 gsp-berlin.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits