Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
karatsoftware.sk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 01:53:56 UTC · ↺ Refresh
MX Hostnames
- bx.virusfree.cz
- cx.spamfree.cz
- ax.virusfree.cz
- dx.spamfree.cz
MX Priorities
- ax.virusfree.cz: 12801
- bx.virusfree.cz: 12817
- cx.spamfree.cz: 12833
- dx.spamfree.cz: 12849
A / AAAA Records
- 194.212.79.7 (no PTR)
Mail Server IPs
- 31.7.241.24 ↩ ax.virusfree.cz
- 2001:67c:15a1::a1 ↩ ax.virusfree.cz
- 89.187.156.46 ↩ bq.virusfree.cz
- 2001:67c:15a2::b1 ↩ bx.virusfree.cz
- 195.24.76.170 ↩ dq.spamfree.cz
- 2001:67c:15a3::d1 ↩ dx.spamfree.cz
SOA Record
Raw SOA
ns.aspone.cz support.aspone.cz 2026031303 3600 1800 2592000 3600
Primary NS (mname)
ns.aspone.cz
Admin Email (rname)
support@aspone.cz
Serial
2026031303
Refresh
3600s
Retry
1800s
Expire
2592000s
Minimum TTL
3600s
Nameservers (NS)
ns.aspone.cz
ns.aspone.eu
ns.aspone.us
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spfsoft.virusfree.cz include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; sp=none; aspf=s; adkim=s; fo=0:1:d:s; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
default._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 include:spfsoft.virusfree.cz include:spf.protection.outlook.com ~all
- MS=ms58290802
- anthropic-domain-verification-y4xjq8=OKfGXTfjRoJwqFLE8rqYOV1HT
- google-site-verification=eIlixFgj6DsBFf4IxwH5_0phRXlQvBsPYbCYdXAeHNo
- google-site-verification=xroTs1huMmI31BVES83Q5rAxpJsyCiUYOW61syyGhEY
Full email verification for karatsoftware.sk
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits