Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hardcastleconstruction.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 18:49:15 UTC · ↺ Refresh
MX Hostnames
- hardcastleconstruction.com.us.emailservice.co
- hardcastleconstruction.com.us.emailservice.cc
- hardcastleconstruction.com.us.emailservice.io
MX Priorities
- hardcastleconstruction.com.us.emailservice.co: 30
- hardcastleconstruction.com.us.emailservice.cc: 20
- hardcastleconstruction.com.us.emailservice.io: 10
A / AAAA Records
- 160.153.0.15 ↩ 15.0.153.160.host.secureserver.net
Mail Server IPs
- 52.44.33.109 ↩ ec2-52-44-33-109.compute-1.amazonaws.com
- 54.211.15.143 ↩ ec2-54-211-15-143.compute-1.amazonaws.com
- 107.21.241.201 ↩ ec2-107-21-241-201.compute-1.amazonaws.com
SOA Record
Raw SOA
ns89.worldnic.com namehost.worldnic.com 125041115 10800 3600 604800 3600
Primary NS (mname)
ns89.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125041115
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns90.worldnic.com
ns89.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:50.197.253.61 include:spf.us.emailservice.io include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; pct=100; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:50.197.253.61 include:spf.us.emailservice.io include:spf.protection.outlook.com -all
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