Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
spskladno.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 02:04:41 UTC · ↺ Refresh
MX Hostnames
- mail.spskladno.cz
- relay.contactel.cz
MX Priorities
- mail.spskladno.cz: 10
- relay.contactel.cz: 20
A / AAAA Records
- 176.222.224.194 ↩ ns.spskladno.cz
Mail Server IPs
- 176.222.224.194 ↩ ns.spskladno.cz
- 193.85.201.247 ↩ bb-prg.eunet.cz
SOA Record
Raw SOA
ns.grdns.cz admin.grdns.cz 2026031101 3600 1800 2592000 3600
Primary NS (mname)
ns.grdns.cz
Admin Email (rname)
admin@grdns.cz
Serial
2026031101
Refresh
3600s
Retry
1800s
Expire
2592000s
Minimum TTL
3600s
Nameservers (NS)
ns.grdns.it
ns.grdns.cz
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:176.222.224.194 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- google-site-verification=1Cpd4h9AyIe8Sy7W-aXp-zFmR6nwthEuXaTAvRGAfBo
- google-site-verification=1HlHtWYn69OXASR8j3lQiCLls0sZWYu3JlWV9swcuYA
- SPFv=spf1 mx ip4:176.222.224.194 include:spf.protection.outlook.com -all
- MS=ms13695550
- _cidrhxlqwxpjl0lytqrbh96r7temkgy
- _k0cpweo9c4nc7u9ged3idp6mhylixyf
- n1w392gzm4cv8hn7f9fhlq3h31hj7qz6
- qphr55g09hxqyvcdk8wrj4r7qdmz2256
- tbz9285w1j2l8cdgr7fpnnyz81hldjfl
- xfr8lvnl529hmk4rbggmn72qf2q8nrv3
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 spskladno.cz
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits