Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kbdgroupusa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 10:41:56 UTC · ↺ Refresh
MX Hostnames
- kbdgroupusa-com.mail.protection.outlook.com
MX Priorities
- kbdgroupusa-com.mail.protection.outlook.com: 0
A / AAAA Records
- 208.80.123.235 ↩ redirection.constellix.com
- 208.80.122.98 ↩ redirection.constellix.com
- 208.80.122.136
- 208.80.123.16
- 2600:1803:10a::25
- 2600:1803:10b::1b
- 2600:1803:10c::4b
- 2600:1803:10d::4f
Mail Server IPs
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns11.constellix.com dns.constellix.com 2015010113 43200 3600 1209600 180
Primary NS (mname)
ns11.constellix.com
Admin Email (rname)
dns@constellix.com
Serial
2015010113
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns21.constellix.com
ns31.constellix.com
ns41.constellix.net
ns51.constellix.net
ns61.constellix.net
ns11.constellix.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:4.7.140.230 ip4:64.88.177.132 include:servers.mcsv.net include:spf.surveymonkey.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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=ms75816395
- 7hw5Jm7cQn6/dBCencjUwf3AyC8y8hLWeVJBDWatxIa1hCUDfsrwialWVnpf/3ETnVNyYY/1OhvCNWH1dAgszQ==
- kBQ4araFCo0u4GeoxgE6hHs31PBVErNbePBw72bjnLrsSAcO9RUwxQELkX3koLmtIlh8lNXW5j7UieEjDnIvyg==
- uiJAjWDkcOLZMq9m2n1rH2kFOMwuwXV5SK+Zwhn4IRKlpv38r9M6mg8Ia1UWCNilio3TMdnLuO7AIJUakjvLnw==
- SPFv=spf1 ip4:4.7.140.230 ip4:64.88.177.132 include:servers.mcsv.net include:spf.surveymonkey.com include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all
- autodesk-domain-verification=TqOs68x-WvFbiXpve1A3
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for kbdgroupusa.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits