Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
s3builders.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 23:36:57 UTC · ↺ Refresh
MX Hostnames
- s3builders-com.mail.protection.outlook.com
MX Priorities
- s3builders-com.mail.protection.outlook.com: 0
A / AAAA Records
- 64.41.95.99 (no PTR)
Mail Server IPs
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
adns.cs.siteprotect.com hostmaster.siteprotect.com 2023090321 28800 7200 604800 300
Primary NS (mname)
adns.cs.siteprotect.com
Admin Email (rname)
hostmaster@siteprotect.com
Serial
2023090321
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
adns.cs.siteprotect.com
bdns.cs.siteprotect.com
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
3 records- MS=ms77089499
- google-site-verification=fznVcg9lUF-ph9aJIOAMBFWhjCcXlR27PEIlhnRd7cI
- SPFv=spf1 include:spf.protection.outlook.com -all
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