Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
petroasfaltos.com.mx
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 23:33:48 UTC · ↺ Refresh
MX Hostnames
- bion.centos.mx
MX Priorities
- bion.centos.mx: 0
A / AAAA Records
- 207.249.65.25 ↩ cp.webmexis.net
Mail Server IPs
- 162.221.202.161 ↩ bion.centos.mx
SOA Record
Raw SOA
ns1.centos.mx director.opcion3.net 2023111000 1800 900 604800 60
Primary NS (mname)
ns1.centos.mx
Admin Email (rname)
director@opcion3.net
Serial
2023111000
Refresh
1800s
Retry
900s
Expire
604800s
Minimum TTL
60s
Nameservers (NS)
ns1.centos.mx
ns2.centos.mx
SPF Record
✓ Strict (-all)
v=spf1 a mx include:opcion3.net -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: 216 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
1 record- SPFv=spf1 a mx include:opcion3.net -all
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