Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
realla.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 03:57:42 UTC · ↺ Refresh
MX Hostnames
- costar-com.mail.protection.outlook.com
MX Priorities
- costar-com.mail.protection.outlook.com: 10
A / AAAA Records
- 104.21.37.113 (no PTR)
- 172.67.207.210 (no PTR)
- 2606:4700:3030::6815:2571
- 2606:4700:3031::ac43:cfd2
Mail Server IPs
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
jason.ns.cloudflare.com dns.cloudflare.com 2398851161 10000 2400 604800 1800
Primary NS (mname)
jason.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398851161
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lina.ns.cloudflare.com
jason.ns.cloudflare.com
SPF Record
✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
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
6 records- MS=ms92680000
- google-site-verification=7PWxK9iV9VN01KfYRLDbBIVrt4tmVvW2POaTbY-G9ZE
- google-site-verification=J3NI5rdN5Sy4lcHK4eJ0j8N20uX7CfibKMDsdLSpaYI
- google-site-verification=VElGwzl-VeCsNflu_qVJxgzKP0Ylc-elPXbayllfDYU
- google-site-verification=v14Cc6HwujtwHHKWIRfkk0LGBrJRJrWHnnd4vkU4UDw
- SPFv=spf1 -all
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