Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
serr.biz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 13:40:48 UTC · ↺ Refresh
MX Hostnames
- serr.biz
MX Priorities
- serr.biz: 0
A / AAAA Records
- 69.48.176.202 ↩ 69.48.176.202.static.a2webhosting.com
Mail Server IPs
- 69.48.176.202 ↩ 69.48.176.202.static.a2webhosting.com
SOA Record
Raw SOA
ns1.supercp.com root.mi3-sr107.supercp.com 2026031000 3600 1800 1209600 86400
Primary NS (mname)
ns1.supercp.com
Admin Email (rname)
root@mi3-sr107.supercp.com
Serial
2026031000
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.supercp.com
ns3.supercp.com
ns2.supercp.com
ns4.supercp.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:66.198.240.40 include:spf.supercp.com +a +mx +ip4:66.198.240.9 +ip4:66.198.249.252 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 ip4:66.198.240.40 include:spf.supercp.com +a +mx +ip4:66.198.240.9 +ip4:66.198.249.252 -all
- google-site-verification=pCPu30xZO1JV3PEbCjeWowbWL-64-aBTmFv7sxHKvlA
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