Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tsrn.ca
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-06-19 04:55:05 UTC · ↺ Refresh
MX Hostnames
- filter17027.zerospam.ca
- filter17026.zerospam.ca
- filter17028.zerospam.ca
MX Priorities
- filter17027.zerospam.ca: 20
- filter17026.zerospam.ca: 10
- filter17028.zerospam.ca: 30
A / AAAA Records
- 209.16.158.245 ↩ hc-nearlystardory-ca.n0c.com
Mail Server IPs
- 209.172.38.68 (no PTR)
SOA Record
Raw SOA
ns1.netfirms.com hostmaster.netfirms.com 2025081461 10800 3600 604800 3600
Primary NS (mname)
ns1.netfirms.com
Admin Email (rname)
hostmaster@netfirms.com
Serial
2025081461
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.netfirms.com
ns2.netfirms.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
- MS=ms47939068
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