Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
premier-system.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 00:05:09 UTC · ↺ Refresh
MX Hostnames
- premiersystem-com01i.mail.protection.outlook.com
MX Priorities
- premiersystem-com01i.mail.protection.outlook.com: 0
A / AAAA Records
- 16.15.187.254 (no PTR)
- 52.217.162.229 ↩ s3-website-us-east-1.amazonaws.com
- 52.217.120.197
- 54.231.129.213
- 54.231.160.165
- 54.231.201.109
- 52.216.220.237
- 16.15.195.139
Mail Server IPs
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-120.awsdns-15.com awsdns-hostmaster.amazon.com 2015121001 7200 900 1209600 86400
Primary NS (mname)
ns-120.awsdns-15.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
2015121001
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1432.awsdns-51.org
ns-1786.awsdns-31.co.uk
ns-771.awsdns-32.net
ns-120.awsdns-15.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- autodesk-domain-verification=s8o744CuePZ55u3DrEIo
- SPFv=spf1 include:spf.protection.outlook.com -all
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