Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tax-individual.com.co
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 00:07:19 UTC · ↺ Refresh
MX Hostnames
- mx2-us.emailsecurity.app
- mx1-us.emailsecurity.app
MX Priorities
- mx1-us.emailsecurity.app: 10
- mx2-us.emailsecurity.app: 20
A / AAAA Records
- 104.21.78.26 (no PTR)
- 172.67.215.28 (no PTR)
- 2606:4700:3030::6815:4e1a (no PTR)
- 2606:4700:3030::ac43:d71c (no PTR)
Mail Server IPs
- 40.121.188.167 ↩ mx1-us.emailsecurity.app
- 172.212.4.33 ↩ mx1-us.emailsecurity.app
SOA Record
Raw SOA
arya.ns.cloudflare.com dns.cloudflare.com 2399865718 10000 2400 604800 1800
Primary NS (mname)
arya.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399865718
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
beau.ns.cloudflare.com
arya.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:190.85.178.242 include:spf.protection.outlook.com include:spf.scanscope.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
5 records- s6r18hcygbfpcrfm7rsbn42zykmbjxbc
- SPFv=spf1 ip4:190.85.178.242 include:spf.protection.outlook.com include:spf.scanscope.net -all
- MS=ms17929179
- _xhlznim9t1i4du2d8hoaupgj7lsf5xe
- amazonses:VTSfgiOrW4d9UvPANpq928G8YD8Ckf7m2wWxciVNcps=
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 tax-individual.com.co
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits