Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
universidadedoingles.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 03:33:39 UTC · ↺ Refresh
MX Hostnames
- mx.b.locaweb.com.br
- mx.a.locaweb.com.br
- mx.core.locaweb.com.br
- mx.jk.locaweb.com.br
MX Priorities
- mx.a.locaweb.com.br: 20
- mx.b.locaweb.com.br: 20
- mx.jk.locaweb.com.br: 20
- mx.core.locaweb.com.br: 10
A / AAAA Records
- 104.21.11.124 (no PTR)
- 172.67.166.7 (no PTR)
- 2606:4700:3035::ac43:a607 (no PTR)
- 2606:4700:3032::6815:b7c (no PTR)
Mail Server IPs
- 186.202.4.42 ↩ mx.a.locaweb.com.br
- 177.153.23.242 ↩ mx.b.locaweb.com.br
- 200.234.204.130 ↩ mx.jk.locaweb.com.br
- 177.153.23.241 ↩ mx.core.locaweb.com.br
SOA Record
Raw SOA
ariella.ns.cloudflare.com dns.cloudflare.com 2398738012 10000 2400 604800 1800
Primary NS (mname)
ariella.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398738012
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ariella.ns.cloudflare.com
johnathan.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx include:infusionmail.com include:_spf.google.com include:emsd1.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 mx include:infusionmail.com include:_spf.google.com include:emsd1.com ~all
- facebook-domain-verification=fnnhckkwor49ziicnzym840tmauo3s
- google-site-verification=5wXL56U_3GluxN2v2KGKEQ3GDQxHEw-KAv9sY-IlZVw
- google-site-verification=obTEkRJ2yFnL8ShV599H0x8cXwz72dcfzGYFMXdgnfY
- SPFv=spf1 include:_spf.locaweb.com.br -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 universidadedoingles.com.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits