Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
centurycontractors.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:10:42 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 72.167.241.195 ↩ 195.241.167.72.host.secureserver.net
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1-09.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-09.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-09.azure-dns.info
ns1-09.azure-dns.com
ns2-09.azure-dns.net
ns3-09.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 mx:centurycontractors-com.mail.protection.outlook.com ip4:96.10.160.210 ip4:20.10.180.13 include:dnsexit.com include:spf_all.comfortsystemsusa.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 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
10 records- smartsheet-site-validation=3EsqkCqqyO9DWBDpHZBzBceX-7ugguuZ
- MS=ms23582781
- google-site-verification=sJStuFMoMR3OplGzKQqgc2dEYJ99wzbHYHCLWB4m5c0
- logmein-verification-code=12e05d3f-f7a1-4e8d-a889-dc2dbc67feb9
- scqduu3lhl6q377l9m8it2kf12
- Y2VudHVyeQ==
- SPFv=spf1 mx:centurycontractors-com.mail.protection.outlook.com ip4:96.10.160.210 ip4:20.10.180.13 include:dnsexit.com include:spf_all.comfortsystemsusa.com -all
- 0ed1fe018a494385464239407a8f2a4d4f6cff6720
- MS=ms62948520
- openai-domain-verification=dv-9TeBU59jAWjK7XuJST1EJIWz
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