Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
blackstonepc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 11:53:22 UTC · ↺ Refresh
MX Hostnames
- blackstonepc-com.mail.protection.outlook.com
MX Priorities
- blackstonepc-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.94.176 (no PTR)
- 172.67.139.18 (no PTR)
- 2606:4700:3030::ac43:8b12
- 2606:4700:3034::6815:5eb0
Mail Server IPs
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
dean.ns.cloudflare.com dns.cloudflare.com 2398661113 10000 2400 604800 1800
Primary NS (mname)
dean.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398661113
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
joyce.ns.cloudflare.com
dean.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com a mx include:relay.kinstamailservice.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=25; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 25% of failing messages only
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
5 records- linkedin-site-verification=2681fc0b-d708-4580-ad15-a74799cff57b
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com a mx include:relay.kinstamailservice.com ~all
- 1password-site-verification=6ET32DMHPJDKPPV5FSMHQC3WOY
- g94oujpfspabkmq0jnibhi6fjs
- google-site-verification=TVcHZYBPwIF_bCLwhVfvC51p3-MLApW7txg76SnBnhA
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