Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
b3groupinc.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 05:15:22 UTC · ↺ Refresh
MX Hostnames
- octo.mail.protection.office365.us
MX Priorities
- octo.mail.protection.office365.us: 10
A / AAAA Records
- 98.83.184.133 ↩ ec2-98-83-184-133.compute-1.amazonaws.com
- 100.28.104.175 ↩ ec2-100-28-104-175.compute-1.amazonaws.com
- 54.157.108.158 ↩ ec2-54-157-108-158.compute-1.amazonaws.com
- 2600:1f18:297:ba18:6ddc:5d8f:6053:f003 (no PTR)
- 2600:1f18:297:ba24:b508:76de:f4a:df34 (no PTR)
- 2600:1f18:297:ba0e:7900:f622:48a8:f266 (no PTR)
Mail Server IPs
- 23.103.199.138 ↩ mail-bn3usg020138.inbound.protection.outlook.com
- 23.103.199.170 ↩ mail-cy1usg020170.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.p04.nsone.net hostmaster.nsone.net 1742913094 28800 7200 604800 3600
Primary NS (mname)
dns1.p04.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1742913094
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.office365.us include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ 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- atlassian-domain-verification=l5g/ru2gpfqjfq1vimaqw2qpucfd5amsev00k4ftmpktuvsgbfaxb5uhyektf2up
- SPFv=spf1 include:spf.protection.office365.us include:_spf.psm.knowbe4.com -all
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