Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
singularidades.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 12:37:57 UTC · ↺ Refresh
MX Hostnames
- singularidades-com-br.mail.protection.outlook.com
MX Priorities
- singularidades-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 104.26.13.36 (no PTR)
- 172.67.69.154 (no PTR)
- 104.26.12.36
- 2606:4700:20::ac43:459a
- 2606:4700:20::681a:d24
- 2606:4700:20::681a:c24
Mail Server IPs
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
kobe.ns.cloudflare.com dns.cloudflare.com 2400324189 10000 2400 604800 1800
Primary NS (mname)
kobe.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400324189
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
riya.ns.cloudflare.com
kobe.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.aknamail.com.br include:_spf.rdstation.com.br include:spf.dualtec.com.br include:sendgrid.net include:mail.zendesk.com include:6331207.spf07.hubspotemail.net include:spf.mtasv.net include:amazonses.com -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms43291548
- google-site-verification=x15U_ZjqY4l_iwlBDtMg-qDXlfPt70n6uqvk4HGPWZ0
- SPFv=spf1 include:spf.protection.outlook.com include:spf.aknamail.com.br include:_spf.rdstation.com.br include:spf.dualtec.com.br include:sendgrid.net include:mail.zendesk.com include:6331207.spf07.hubspotemail.net include:spf.mtasv.net include:amazonses.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 singularidades.com.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits