Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rko-cpas.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 23:17:55 UTC · ↺ Refresh
MX Hostnames
- rkocpas-com0i.mail.protection.outlook.com
MX Priorities
- rkocpas-com0i.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.41.235 (no PTR)
- 172.67.196.184 (no PTR)
- 2606:4700:3034::ac43:c4b8
- 2606:4700:3030::6815:29eb
Mail Server IPs
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
SOA Record
Raw SOA
elmo.ns.cloudflare.com dns.cloudflare.com 2398567741 10000 2400 604800 1800
Primary NS (mname)
elmo.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398567741
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
elmo.ns.cloudflare.com
fiona.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a include:spf.protection.outlook.com include:rko-cpas-com.spf.smtp25.com IP4:50.75.30.218 IP4:50.75.30.219 IP4:174.137.150.124 ip4:192.185.21.151 ip4:24.39.178.130 IP4:216.238.174.66 include:spfa.cpmails.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
3 records- 5wYxJxqCFlOFabSiwR4eqQ2xac2JQvttE96nXjNJapuodbW2PkAzG6KeQB7AEJPf8PWa1aHkyjL3ptpYx9/GBg==
- SPFv=spf1 a include:spf.protection.outlook.com include:rko-cpas-com.spf.smtp25.com IP4:50.75.30.218 IP4:50.75.30.219 IP4:174.137.150.124 ip4:192.185.21.151 ip4:24.39.178.130 IP4:216.238.174.66 include:spfa.cpmails.com ~all
- 0U04xc4WVPw76XYeGo31tA==
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