Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
css-constructores.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 01:55:39 UTC · ↺ Refresh
MX Hostnames
- cssconstructores-com0i.mail.protection.outlook.com
MX Priorities
- cssconstructores-com0i.mail.protection.outlook.com: 0
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
SOA Record
Raw SOA
ns23.worldnic.com namehost.worldnic.com 125030311 10800 3600 604800 3600
Primary NS (mname)
ns23.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125030311
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns23.worldnic.com
ns24.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- pexip-ms-tenant-domain-verification=418325cf-6222-471f-9329-86d67ce6bf1b
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