Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
btbryan.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 18:11:11 UTC · ↺ Refresh
MX Hostnames
- btbryan-com.mail.protection.outlook.com
MX Priorities
- btbryan-com.mail.protection.outlook.com: 10
A / AAAA Records
- 66.96.160.138 ↩ 138.160.96.66.static.eigbox.net
Mail Server IPs
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.netfirms.com dnsadmin.netfirms.com 2011070532 10800 3600 604800 3600
Primary NS (mname)
ns1.netfirms.com
Admin Email (rname)
dnsadmin@netfirms.com
Serial
2011070532
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.netfirms.com
ns2.netfirms.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:66.96.128.0/18 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
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 ip4:66.96.128.0/18 include:spf.protection.outlook.com -all
- MS=ms49173247
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