Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bismark.net.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 05:15:20 UTC · ↺ Refresh
MX Hostnames
- bismark-net-co.mail.protection.outlook.com
MX Priorities
- bismark-net-co.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.6.147 (no PTR)
- 172.67.134.229 (no PTR)
- 2606:4700:3035::ac43:86e5
- 2606:4700:3033::6815:693
Mail Server IPs
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
april.ns.cloudflare.com dns.cloudflare.com 2396869102 10000 2400 604800 1800
Primary NS (mname)
april.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396869102
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
april.ns.cloudflare.com
clint.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
3 records- google-site-verification=qshuECcOpUaBw17sw5doNPKZahenvhre2jfgHn21hpk
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=pGyOK8Y0b7dIsS7g_OJlMf2ZI0esVTx1Fj32ng1-AKY
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