pucmm.edu.do — Caribbean IPv6 Monitor

Score1/4

Overall IPv4-only

Collected2026-10-12 20:32 UTC

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

Priority next steps

IPv6 2001:13e0:8000:1::10 on name server ns2.pucmm.edu.do failed (timeout) — check firewall, routing, and service.
Publish AAAA records for web host: pucmm.edu.do.
Enable DNSSEC signing and publish a DNSKEY at the apex. Use DNSViz to validate the full chain.

IPv4-only

[2] 1/0/0 [I]

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

IPv4 1/1/1 · IPv6 1/0/0 · location I

Host	IPv4	IPv6	Probes
`ns2.pucmm.edu.do` [I]	190.113.73.10	2001:13e0:8000:1::10	ipv4 190.113.73.10 ok; ipv6 2001:13e0:8000:1::10 timeout;
`ns1.pucmm.edu.do` [I]	—	—

📌 Action item(s):

IPv6 2001:13e0:8000:1::10 on name server ns2.pucmm.edu.do failed (timeout) — check firewall, routing, and service.

Dual-stack

[1 MX] v4 smtp 4/4/4 v6 smtp 4/4/4 [O]

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

IPv4 SMTP 4/4/4 · IPv6 4/4/4 · location O

Host	IPv4	IPv6	Probes
`pucmm-edu-do.mail.protection.outlook.com` [O]	52.101.41.54, 52.101.42.14, 52.101.41.183, 52.101.42.18	2a01:111:f403:f909::d, 2a01:111:f403:c922::4, 2a01:111:f403:c946::3, 2a01:111:f403:f90f::1	ipv4 52.101.41.54 ok; ipv4 52.101.42.14 ok; ipv4 52.101.41.183 ok; ipv4 52.101.42.18 ok; ipv6 2a01:111:f403:f909::d ok; ipv6 2a01:111:f403:c922::4 ok; ipv6 2a01:111:f403:c946::3 ok; ipv6 2a01:111:f403:f90f::1 ok;

IPv4-only

[1] 0/0/0 [I]

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

IPv4 2/2/2 · IPv6 0/0/0 · location I

Host	IPv4	IPv6	Probes
`pucmm.edu.do` [I]	192.0.78.235, 192.0.78.170	—	ipv4 ok;

📌 Action item(s):

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.

📌 Action item(s):

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

p=reject

p=reject — published organizational policy. Strongest published policy (SPF/DKIM alignment still not measured here).

Meaning: Published DMARC policy at _dmarc.pucmm.edu.do (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.

Record at _dmarc.pucmm.edu.do:

v=DMARC1;p=reject;pct=100;rua=mailto:postmaster@pucmm.edu.do;ruf=mailto:postmaster@pucmm.edu.do;ri=604800;fo=1;

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