Domain Overview
DNS: ✓ 19h ago
Checker: ✓ 19h ago
cardmonitor.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 03:30:43 UTC · ↺ Refresh
MX Hostnames
- mx.core.locaweb.com.br
- mx.a.locaweb.com.br
- mx.jk.locaweb.com.br
- mx.b.locaweb.com.br
MX Priorities
- mx.a.locaweb.com.br: 10
- mx.b.locaweb.com.br: 10
- mx.jk.locaweb.com.br: 10
- mx.core.locaweb.com.br: 20
A / AAAA Records
- 179.188.54.248 (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
ns1.locaweb.com.br hostmaster.locaweb.com.br 2022031001 3600 600 1209600 3600
Primary NS (mname)
ns1.locaweb.com.br
Admin Email (rname)
hostmaster@locaweb.com.br
Serial
2022031001
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns1.locaweb.com.br
ns3.locaweb.com.br
ns2.locaweb.com.br
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.locaweb.com.br -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:_spf.locaweb.com.br -all
- _globalsign-domain-verification=0pYEQI-4R_w0T6eb_YyUtzOmRBzNeM6XPEfwxUmSmy
Full email verification for cardmonitor.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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