Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
opencs.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 15:01:30 UTC · ↺ Refresh
MX Hostnames
- b3fe6f1e.21.ik2.com
- b3fe6f1e.22.ik2.io
MX Priorities
- b3fe6f1e.22.ik2.io: 20
- b3fe6f1e.21.ik2.com: 10
A / AAAA Records
- 3.140.233.119 ↩ ec2-3-140-233-119.us-east-2.compute.amazonaws.com
- 2600:1f16:1ae9:56d:c806:b0f9:deeb:5c3f (no PTR)
Mail Server IPs
- 66.228.130.221 ↩ s214c.ik2.com
- 64.38.239.83 ↩ s480d.ik2.com
- 38.246.57.230 ↩ s602e.ik2.com
SOA Record
Raw SOA
ns-1337.awsdns-39.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1337.awsdns-39.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1337.awsdns-39.org
ns-2030.awsdns-61.co.uk
ns-57.awsdns-07.com
ns-681.awsdns-21.net
SPF Record
✓ Soft Fail (~all)
v=spf1 +a +mx +ip4:3.140.233.119 +ip6:2600:1f16:16f4:38e6:a3da:6280:d1dd:7011 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +a +mx +ip4:3.140.233.119 +ip6:2600:1f16:16f4:38e6:a3da:6280:d1dd:7011 ~all
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