jcconcursos.com.br

Valid Email Server
Domain Lookup › jcconcursos.com.br

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jcconcursos.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 21:34:12 UTC · ↺ Refresh

MX Hostnames

  • mx.a.locaweb.com.br
  • mx.b.locaweb.com.br
  • mx.jk.locaweb.com.br
  • mx.core.locaweb.com.br

MX Priorities

  • mx.b.locaweb.com.br: 20
  • mx.jk.locaweb.com.br: 20
  • mx.core.locaweb.com.br: 10
  • mx.a.locaweb.com.br: 20

A / AAAA Records

  • 172.67.71.184 (no PTR)
  • 104.26.15.31 (no PTR)
  • 104.26.14.31 (no PTR)
  • 2606:4700:20::681a:e1f (no PTR)
  • 2606:4700:20::681a:f1f (no PTR)
  • 2606:4700:20::ac43:47b8 (no PTR)

Mail Server IPs

  • 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
  • 186.202.4.42 ↩ mx.a.locaweb.com.br

SOA Record

Raw SOA anirban.ns.cloudflare.com dns.cloudflare.com 2399806785 10000 2400 604800 1800
Primary NS (mname)
anirban.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399806785
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

anirban.ns.cloudflare.com
sofia.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.locaweb.com.br ?all
📊 DNS lookups: 1/10
? Neutral (?all) — no enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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

3 records
  • google-site-verification=vMzOMNl3l8tbZTv4Ll5lAwfLXEaTpEINRIpUd-pgd3M
  • SPFv=spf1 include:_spf.locaweb.com.br ?all
  • google-site-verification=M8pG5OcK0a_n0tmdvhZg8Ck4Rr6TKPuinE4Q5wy6Ad0
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