minrex.gob.cu — Caribbean IPv6 Monitor

Score0/4

Overall IPv4-only

EconomyCuba

Collected2026-10-15 04:35 UTC

Measurement estimates from a single vantage point — not a compliance certification. Guidance below is for operators, not an SLA.

Priority next steps

Publish AAAA records for name server: minrex.gob.cu, ns2.minrex.gob.cu.
Publish AAAA records for mail (MX): mail.minrex.gob.cu.
Web measurement was inconclusive or unavailable.
Enable DNSSEC signing and publish a DNSKEY at the apex. Use DNSViz to validate the full chain.
Publish a _dmarc TXT record (start with p=none, then tighten). Check policy on dmarcian.

Checks

DNS

IPv4-only

[2] 0/0/0 [I]

Meaning: Shows how many authoritative name servers exist, and how many IPv6 endpoints are configured, responsive, and operational.

IPv4 2/2/2 · IPv6 0/0/0 · location I

Host	IPv4	IPv6	Probes
`ns2.minrex.gob.cu` [I]	201.168.144.98	—	ipv4 201.168.144.98 ok;
`minrex.gob.cu` [I]	200.55.156.98	—	ipv4 200.55.156.98 ok;

📌 Action item(s):

Publish AAAA records for name server: minrex.gob.cu, ns2.minrex.gob.cu.

Mail

IPv4-only

[1 MX] v4 smtp 1/1/1 v6 smtp 0/0/0 [I]

Meaning: Shows MX footprint and SMTP health per IP family. Operational means an SMTP banner and EHLO exchange succeeded on port 25.

IPv4 SMTP 1/1/1 · IPv6 0/0/0 · location I

Host	IPv4	IPv6	Probes
`mail.minrex.gob.cu` [I]	200.55.156.102	—	ipv4 200.55.156.102 ok;

📌 Action item(s):

Publish AAAA records for mail (MX): mail.minrex.gob.cu.

Web

Unknown

[0] error: Get "https://www.minrex.gob.cu/": tls: failed to verify certificate: x509: certificate has expired or is not yet valid: current time 2026-10-15T04:35:08Z is after 2026-04-05T23:19:06Z

Meaning: Shows IPv6 web endpoint readiness for the discovered HTTPS host. Operational means family-specific HTTPS requests complete successfully.

IPv4 0/0/0 · IPv6 0/0/0 · location -

📌 Action item(s):

Web measurement was inconclusive or unavailable.

DNSSEC

Unsigned

U/-/-

Meaning: Shows whether DNSKEY data is observed at the apex (signed), absent (unsigned), or unavailable due to lookup error.

Apex DNSKEY presence only — not full chain validation.

Analyze on DNSViz

📌 Action item(s):

Enable DNSSEC signing and publish a DNSKEY at the apex. Use DNSViz to validate the full chain.

DMARC

No record

No record — no TXT at _dmarc.minrex.gob.cu.

Meaning: Published DMARC policy at _dmarc.minrex.gob.cu (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.

Publish a DMARC TXT at _dmarc.minrex.gob.cu (often start with p=none, then tighten).

Policy publication only — SPF/DKIM not measured. Not part of the 0–4 row score.

Check on dmarcian

📌 Action item(s):

Publish a _dmarc TXT record (start with p=none, then tighten). Check policy on dmarcian.