Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ustfuel.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 07:18:51 UTC · ↺ Refresh
MX Hostnames
- ustfuel-com.mail.protection.outlook.com
MX Priorities
- ustfuel-com.mail.protection.outlook.com: 10
A / AAAA Records
- 66.228.138.131 (no PTR)
Mail Server IPs
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.inetspec.net hostmaster.inetspec.com 2026031106 1800 1800 300 300
Primary NS (mname)
dns1.inetspec.net
Admin Email (rname)
hostmaster@inetspec.com
Serial
2026031106
Refresh
1800s
Retry
1800s
Expire
300s
Minimum TTL
300s
Nameservers (NS)
dns2.inetspec.net
dns3.inetspec.net
dns1.inetspec.net
SPF Record
✓ Strict (-all)
v=spf1 a include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=ms76268553
- SPFv=spf1 a include:spf.protection.outlook.com -all
Full email verification for ustfuel.com
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