Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gainsulators.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 21:33:56 UTC · ↺ Refresh
MX Hostnames
- gainsulators-com.mail.protection.outlook.com
MX Priorities
- gainsulators-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.87.200 (no PTR)
- 172.67.145.239 (no PTR)
- 2606:4700:3037::ac43:91ef
- 2606:4700:3035::6815:57c8
Mail Server IPs
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
andy.ns.cloudflare.com dns.cloudflare.com 2398936981 10000 2400 604800 1800
Primary NS (mname)
andy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398936981
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lorna.ns.cloudflare.com
andy.ns.cloudflare.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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- bejfoh0pu7ikcg1p7i78mdvvgu
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