Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cerberussentinel.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 04:59:40 UTC · ↺ Refresh
MX Hostnames
- cerberussentinel-com.mail.protection.outlook.com
MX Priorities
- cerberussentinel-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
pdns05.domaincontrol.com dns.jomax.net 2025062500 28800 7200 604800 600
Primary NS (mname)
pdns05.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025062500
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
pdns05.domaincontrol.com
pdns06.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:64.94.35.32 ip4:167.89.70.61 ip4:50.31.33.121 ip4:70.184.37.54 ip4:34.198.144.75 ip4:209.208.9.42 ip4:52.240.150.170 ip4:70.177.5.135 ip4:204.232.169.200 ip4:20.44.96.144 ip4:40.65.226.203 include:spf.protection.outlook.com include:3780971.spf01.hubspotemail.net include:aem.autotask.net include:spf.openair.com include:spf.openair1.com include:autotask.net include:_spf.salesforce.com include:_spf.ultipro.com include:sent-via.netsuite.com -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
13 records- v=verifydomain MS=4546548
- 0ed1fe018a32466e77dfdb468e88a78b1478b03f8b
- MS=ms47971026
- dlm3fb7fpb42lqqpg9ycjwwsy6vkjz4v
- box-domain-verification=4d4abe52dcab3c094d6fa76c8296378fa28af5641d787d255e31c4f281b77aa2
- google-site-verification=_fMolAIeyaIBd5um-beFH2L2gevd2BizBob0VX6Jn14
- apple-domain-verification=6SeykrFM0ULtbXk0
- knowbe4-site-verification=1b1afabad5f19b61a79d261e8254d813
- pax8-verification=8d6050b9-5071-3ee3-b6ee-0fa67ff214f5
- nut0hstv9avh4l75lntaifuka9
- MS=ms89816033
- google-site-verification=uXyJ-rT0iCJj3F51ipU-LL4ARVHkmYfLApsTNREV5XM
- SPFv=spf1 ip4:64.94.35.32 ip4:167.89.70.61 ip4:50.31.33.121 ip4:70.184.37.54 ip4:34.198.144.75 ip4:209.208.9.42 ip4:52.240.150.170 ip4:70.177.5.135 ip4:204.232.169.200 ip4:20.44.96.144 ip4:40.65.226.203 include:spf.protection.outlook.com include:3780971.spf01.hubspotemail.net include:aem.autotask.net include:spf.openair.com include:spf.openair1.com include:autotask.net include:_spf.salesforce.com include:_spf.ultipro.com include:sent-via.netsuite.com -all
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 cerberussentinel.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits