ckbrush.com

Valid Email Server
Domain Lookup › ckbrush.com

Domain Overview

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

Checked via [email protected] · 2026-03-24 01:29:36 UTC · ↺ Refresh

MX Hostnames

  • ckbrush-com.mail.protection.outlook.com

MX Priorities

  • ckbrush-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.207.85 (no PTR)
  • 104.21.85.159 (no PTR)
  • 2606:4700:3037::ac43:cf55
  • 2606:4700:3030::6815:559f

Mail Server IPs

  • 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
  • 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
  • 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
  • 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA demi.ns.cloudflare.com dns.cloudflare.com 2399214577 10000 2400 604800 1800
Primary NS (mname)
demi.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399214577
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

ed.ns.cloudflare.com
demi.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:mailgun.org -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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

3 records
  • google-site-verification=Sxaya-keTV7Hv6SspUkibcYRkOYZVJ8uNZm7I8Md7sk
  • SPFv=spf1 include:spf.protection.outlook.com include:mailgun.org -all
  • MS=ms23796164
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