rcoaz.com

Valid Email Server
Domain Lookup › rcoaz.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rcoaz.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-28 05:33:50 UTC · ↺ Refresh

MX Hostnames

  • rcoaz-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 74.208.236.231 ↩ 74-208-236-231.elastic-ssl.ui-r.com
  • 2607:f1c0:100f:f000::226 ↩ 2607-f1c0-100f-f000-0000-0000-0000-0226.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
  • 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
  • 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
  • 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com

SOA Record

Raw SOA ns1028.ui-dns.biz hostmaster.1and1.com 2016121109 28800 7200 604800 300
Primary NS (mname)
ns1028.ui-dns.biz
Admin Email (rname)
hostmaster@1and1.com
Serial
2016121109
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1028.ui-dns.biz
ns1105.ui-dns.com
ns1124.ui-dns.de
ns1111.ui-dns.org

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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

1 record
  • SPFv=spf1 include:spf.protection.outlook.com -all
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