Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nationalbackground.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 01:35:24 UTC · ↺ Refresh
MX Hostnames
- nationalbackground-com.mail.protection.outlook.com
MX Priorities
- nationalbackground-com.mail.protection.outlook.com: 0
A / AAAA Records
- 67.225.185.23 ↩ host03.cpdesignco.com
Mail Server IPs
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.cpdesignco.com devnull.sourcedns.com 2026030101 3600 1800 1209600 86400
Primary NS (mname)
ns1.cpdesignco.com
Admin Email (rname)
devnull@sourcedns.com
Serial
2026030101
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.cpdesignco.com
ns2.cpdesignco.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:67.225.185.23 +a +mx +ip4:67.225.185.36 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
default._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
4 records- google-site-verification=aHZq0c_qOLR1SSoBMl4AaRuOmMPjm-tojDw-eYSe89g
- v=verifydomain MS=91783103
- SPFv=spf1 ip4:67.225.185.23 +a +mx +ip4:67.225.185.36 ~all
- brevo-code:dbf9697ca7f3e90baef1c4710d7d45d9
Full email verification for nationalbackground.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits