Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nortec.co.cr
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 09:44:14 UTC · ↺ Refresh
MX Hostnames
- nortec-co-cr.mail.protection.outlook.com
MX Priorities
- nortec-co-cr.mail.protection.outlook.com: 0
A / AAAA Records
- 190.0.230.210 ↩ sl1.cyberfuel.com
Mail Server IPs
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
SOA Record
Raw SOA
ns2.cyberfuel.com rothe_nortec.yahoo.com 2026031801 10800 3600 604800 10800
Primary NS (mname)
ns2.cyberfuel.com
Admin Email (rname)
rothe_nortec@yahoo.com
Serial
2026031801
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns1.cyberfuel.com
ns2.cyberfuel.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:177.93.19.241 ip4:3.217.94.78 ip4:3.210.176.163 ip4:18.234.13.78 ip4:3.208.113.192 ip4:3.214.35.23 include:spf.protection.outlook.com include:mail.zendesk.com include:servers.mcsv.net include:spf.cyberfuel.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=8DFCE8032793D00688209ABD91CB79CF628110F2
- SPFv=spf1 ip4:177.93.19.241 ip4:3.217.94.78 ip4:3.210.176.163 ip4:18.234.13.78 ip4:3.208.113.192 ip4:3.214.35.23 include:spf.protection.outlook.com include:mail.zendesk.com include:servers.mcsv.net include:spf.cyberfuel.com -all
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