Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
federalconstructors.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 18:31:35 UTC · ↺ Refresh
MX Hostnames
- federalconstructors.com.us.emailservice.io
MX Priorities
- federalconstructors.com.us.emailservice.io: 10
A / AAAA Records
- 64.207.176.177 ↩ zxcvbnmqwerty.com
Mail Server IPs
- 54.211.15.143 ↩ ec2-54-211-15-143.compute-1.amazonaws.com
- 52.44.33.109 ↩ ec2-52-44-33-109.compute-1.amazonaws.com
- 107.21.241.201 ↩ ec2-107-21-241-201.compute-1.amazonaws.com
SOA Record
Raw SOA
ns21.domaincontrol.com dns.jomax.net 2025120400 28800 7200 604800 600
Primary NS (mname)
ns21.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025120400
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns21.domaincontrol.com
ns22.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:SendGrid.net include:isqftmail.com include:spf.protection.outlook.com include:spf.us.emailservice.io -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- v=verifydomain MS=2885848
- SPFv=spf1 include:SendGrid.net include:isqftmail.com include:spf.protection.outlook.com include:spf.us.emailservice.io -all
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