Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
dataknow.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-07-01 06:44:12 UTC · ↺ Refresh
MX Hostnames
- dataknow-co.mail.protection.outlook.com
MX Priorities
- dataknow-co.mail.protection.outlook.com: 0
A / AAAA Records
- 192.64.119.137 (no PTR)
Mail Server IPs
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.registrar-servers.com hostmaster.registrar-servers.com 1781713827 43200 3600 604800 3601
Primary NS (mname)
dns1.registrar-servers.com
Admin Email (rname)
hostmaster@registrar-servers.com
Serial
1781713827
Refresh
43200s
Retry
3600s
Expire
604800s
Minimum TTL
3601s
Nameservers (NS)
dns2.registrar-servers.com
dns1.registrar-servers.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.rdstation.com.br include:sendgrid.net include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:50748792.spf08.hubspotemail.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- apple-domain-verification=PwaALIptImmis5aS
- apple-domain-verification=TKQzX4Z3Vyfo4gm7
- openai-domain-verification=dv-SMuPKrt3YDNB66aQnbYUKK7i
- anthropic-domain-verification-yhse5p=50hFfOmbxqdEioG8tyEeNo3BT
- google-site-verification=_71i0Xr0gcjff3UsotcAvrOXDTGpoIl7lpOh3TFSm7U
- SPFv=spf1 include:_spf.rdstation.com.br include:sendgrid.net include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:50748792.spf08.hubspotemail.net -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 · Customize →
See demo & docs
Deep verification
Full email verification for dataknow.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits