Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
blackbirdinvestimentos.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 18:29:42 UTC · ↺ Refresh
MX Hostnames
- blackbirdinvestimentos-com-br.mail.protection.outlook.com
MX Priorities
- blackbirdinvestimentos-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.217.78 (no PTR)
- 104.21.24.61 (no PTR)
- 2606:4700:3030::ac43:d94e
- 2606:4700:3031::6815:183d
Mail Server IPs
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
arturo.ns.cloudflare.com dns.cloudflare.com 2397081807 10000 2400 604800 1800
Primary NS (mname)
arturo.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397081807
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
arturo.ns.cloudflare.com
joselyn.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:162.214.101.179 +a +mx +ip4:162.215.169.255 +include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; sp=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
2 records- MS=ms35890645
- SPFv=spf1 ip4:162.214.101.179 +a +mx +ip4:162.215.169.255 +include:spf.protection.outlook.com -all
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