circlebco.com

Valid Email Server
Domain Lookup › circlebco.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
circlebco.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 01:07:26 UTC · ↺ Refresh

MX Hostnames

  • circlebco-com.mail.protection.outlook.com

MX Priorities

  • circlebco-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 45.40.146.143 ↩ 143.146.40.45.host.secureserver.net

Mail Server IPs

  • 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
  • 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
  • 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.earthlink.net hostmaster.earthlink.net 2024101709 86400 86400 3600000 86400
Primary NS (mname)
dns1.earthlink.net
Admin Email (rname)
hostmaster@earthlink.net
Serial
2024101709
Refresh
86400s
Retry
86400s
Expire
3600000s
Minimum TTL
86400s

Nameservers (NS)

dns2.earthlink.net
dns3.earthlink.net
dns1.earthlink.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • vnf0eehbm6uajqohle452jatls
  • SPFv=spf1 include:spf.protection.outlook.com ~all
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