Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3xf.tech
Yes
✓ Yes
Zoho
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 20:43:37 UTC · ↺ Refresh
MX Hostnames
- mx3.zoho.com
- 3xf-tech.mail.protection.outlook.com
- mx.zoho.com
- mx2.zoho.com
MX Priorities
- mx.zoho.com: 10
- mx2.zoho.com: 20
- mx3.zoho.com: 50
- 3xf-tech.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.165.127
- 104.21.65.195
- 2606:4700:3034::ac43:a57f
- 2606:4700:3030::6815:41c3
Mail Server IPs
- 136.143.191.44 ↩ mx.zoho.com
- 136.143.183.44 ↩ mx2.zohomail.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
justin.ns.cloudflare.com dns.cloudflare.com 2399773058 10000 2400 604800 1800
Primary NS (mname)
justin.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399773058
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
venus.ns.cloudflare.com
justin.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:162.55.188.70 include:zohomail.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rua=mailto:[email protected]; sp=none; adkim=r; aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 6 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
zoho._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
4 records- brevo-code:9ac43d8637846c83becc45e1b5fcc5f9
- openai-domain-verification=dv-qhrprvvZKTBqLudjnSpwXDBt
- SPFv=spf1 ip4:162.55.188.70 include:zohomail.com include:spf.protection.outlook.com -all
- zoho-verification=zb48343966.zmverify.zoho.com
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 3xf.tech
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits