Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fastcr.cz
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 06:23:30 UTC · ↺ Refresh
MX Hostnames
- fastcr-cz.mail.protection.outlook.com
MX Priorities
- fastcr-cz.mail.protection.outlook.com: 0
A / AAAA Records
- 4.207.110.253 (no PTR)
Mail Server IPs
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.regzone.cz administrator.czechia.cz 2026032702 10800 1800 1814400 3600
Primary NS (mname)
ns1.regzone.cz
Admin Email (rname)
administrator@czechia.cz
Serial
2026032702
Refresh
10800s
Retry
1800s
Expire
1814400s
Minimum TTL
3600s
Nameservers (NS)
ns1.regzone.cz
ns1.regzone.de
ns1.regzone.info
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.etn.cz include:_spf.fortion.net a:mail.fastcr.cz a:mail1.fastcr.cz ip4:213.168.176.89 ip4:213.168.176.90 ip4:213.168.176.91 a:smtp-out.fastcr.cz ip4:84.244.93.44 ip4:37.157.192.107 ip4:37.157.195.139 ip4:37.157.195.36 ip4:89.221.219.75 ip4:89.221.219.140 ip4:89.221.219.154 ip4:89.221.219.174 include:spf-zoner-cloudmail.zoner.com include:spf.zohomail360.eu -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
15 records- w3pqc47m5hh64h13mwk6ngfms45vldhk
- xzsyj923vkwn252lqnwjjtjqhmj7g7gr
- zdym543lk02ntfbbdz0v1rjpjwvlbc53
- google-site-verification=H7qbbgd3m_nxDyseHw-MST5Ahe8kVqnR7E5obm4Qmuk
- zy10zwdc6np562s1hnzfzkzx65krm3s1
- openai-domain-verification=dv-D0R0zdwJSPbipEvs2ubV72Ge
- SPFv=spf1 include:spf.protection.outlook.com include:spf.etn.cz include:_spf.fortion.net a:mail.fastcr.cz a:mail1.fastcr.cz ip4:213.168.176.89 ip4:213.168.176.90 ip4:213.168.176.91 a:smtp-out.fastcr.cz ip4:84.244.93.44 ip4:37.157.192.107 ip4:37.157.195.139 ip4:37.157.195.36 ip4:89.221.219.75 ip4:89.221.219.140 ip4:89.221.219.154 ip4:89.221.219.174 include:spf-zoner-cloudmail.zoner.com include:spf.zohomail360.eu -all
- MS=ms79685908
- asv=de237cf401bd71f734cf4e4ce9470b34
- anthropic-domain-verification-3hm3ep=OELe3So2t6iJvNegWu7gLSCtM
- canva-site-verification=wRB9sQzLbpRff4mYtY3O5g
- 5EczK6q4QpOY3HTgZLBwnleHJ1aowZzHVmZHKEwxRwb0ntxloR+7YactX2okbIxRgeSEfwRYX/2fFNen+R0cLw==
- _qh1cf6io6cj3n2dzt3zxh5s51rfhzon
- _nmx7q53gyjhnkjf8tnj5o3ydmnloziy
- wjyy2hpg1w3r411nn8n70p7869g86fm8
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