Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
usisg.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 01:18:25 UTC · ↺ Refresh
MX Hostnames
- usisg-com.mail.protection.outlook.com
MX Priorities
- usisg-com.mail.protection.outlook.com: 0
A / AAAA Records
- 148.72.50.47 ↩ 47.50.72.148.host.secureserver.net
Mail Server IPs
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.phx1.nearlyfreespeech.net hostmaster.nearlyfreespeech.net 1694544975 600 180 86400 180
Primary NS (mname)
ns.phx1.nearlyfreespeech.net
Admin Email (rname)
hostmaster@nearlyfreespeech.net
Serial
1694544975
Refresh
600s
Retry
180s
Expire
86400s
Minimum TTL
180s
Nameservers (NS)
ns.phx8.nearlyfreespeech.net
ns.phx6.nearlyfreespeech.net
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
1 record- SPFv=spf1 include:spf.protection.outlook.com -all
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