Domain Overview
DNS: โ 2mo ago
Checker: โ 2mo ago
gwl-tennis.de
Yes
โ Yes
Unknown
No
No
โ Yes
No
No
Checked via [email protected]
ยท 2026-04-02 16:05:24 UTC ยท โบ Refresh
MX Hostnames
- mxlb.ispgateway.de
MX Priorities
- mxlb.ispgateway.de: 100
A / AAAA Records
- 92.205.210.46 โฉ sh22853.ispgateway.de
- 2a00:1169:103:8bc0:: โฉ sh22853.ispgateway.de
Mail Server IPs
- 80.67.18.126 โฉ mxlb.ispgateway.de
SOA Record
Raw SOA
ns81.domaincontrol.com dns.jomax.net 2026033101 28800 7200 604800 600
Primary NS (mname)
ns81.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026033101
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns82.domaincontrol.com
ns81.domaincontrol.com
SPF Record
โ Strict (-all)
v=spf1 mx a include:ispgateway.de include:spf.protection.outlook.com -all
๐ DNS lookups: 4/10
โ Hard fail (-all) โ strict enforcement
DMARC Record
โ p=none
v=DMARC1; p=none;
โ p=none โ monitoring only, no enforcement
๐ SPF alignment: Relaxed
ยท DKIM alignment: Relaxed
โ No aggregate reports (rua= not set)
DKIM Selectors
โ 2 found
selector1._domainkey
selector2._domainkey
โ Public key: 216 chars (valid)
โ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx a include:ispgateway.de include:spf.protection.outlook.com -all
- google-site-verification=zMZJsvkngxHmWZ93KUAxrq1RXjaIFJkVs62g5yj8CQA
Free ยท No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts โ unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for gwl-tennis.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits