ub.edu.bz — Caribbean IPv6 Monitor

Score3/4

Overall Dual-stack

Collected2026-10-15 12:33 UTC

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

Priority next steps

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

Dual-stack

[2] 6/6/6 [O]

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

IPv4 6/6/6 · IPv6 6/6/6 · location O

Host	IPv4	IPv6	Probes
`bowen.ns.cloudflare.com` [O]	162.159.44.83, 172.64.35.83, 108.162.195.83	2a06:98c1:50::ac40:2353, 2803:f800:50::6ca2:c353, 2606:4700:58::a29f:2c53	ipv4 162.159.44.83 ok; ipv4 172.64.35.83 ok; ipv4 108.162.195.83 ok; ipv6 2a06:98c1:50::ac40:2353 ok; ipv6 2803:f800:50::6ca2:c353 ok; ipv6 2606:4700:58::a29f:2c53 ok;
`sneh.ns.cloudflare.com` [O]	162.159.38.162, 108.162.194.162, 172.64.34.162	2a06:98c1:50::ac40:22a2, 2803:f800:50::6ca2:c2a2, 2606:4700:50::a29f:26a2	ipv4 162.159.38.162 ok; ipv4 108.162.194.162 ok; ipv4 172.64.34.162 ok; ipv6 2a06:98c1:50::ac40:22a2 ok; ipv6 2803:f800:50::6ca2:c2a2 ok; ipv6 2606:4700:50::a29f:26a2 ok;

Dual-stack

[5 MX] v4 smtp 5/5/5 v6 smtp 5/5/5 [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 5/5/5 · IPv6 5/5/5 · location O

Host	IPv4	IPv6	Probes
`aspmx.l.google.com` [O]	173.194.203.27	2607:f8b0:400e:c1e::1a	ipv4 173.194.203.27 ok; ipv6 2607:f8b0:400e:c1e::1a ok;
`alt3.aspmx.l.google.com` [O]	172.217.216.26	2607:f8b0:4023:2803::1a	ipv4 172.217.216.26 ok; ipv6 2607:f8b0:4023:2803::1a ok;
`alt4.aspmx.l.google.com` [O]	172.253.145.27	2607:f8b0:4023:3003::1a	ipv4 172.253.145.27 ok; ipv6 2607:f8b0:4023:3003::1a ok;
`alt2.aspmx.l.google.com` [O]	192.178.231.26	2607:f8b0:4023:200d::1b	ipv4 192.178.231.26 ok; ipv6 2607:f8b0:4023:200d::1b ok;
`alt1.aspmx.l.google.com` [O]	74.125.137.26	2607:f8b0:4023:c03::1b	ipv4 74.125.137.26 ok; ipv6 2607:f8b0:4023:c03::1b ok;

Dual-stack

[1] 2/2/2 [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 2/2/2 · location I

Host	IPv4	IPv6	Probes
`ub.edu.bz` [I]	104.21.29.225, 172.67.171.223	2606:4700:3031::ac43:abdf, 2606:4700:3034::6815:1de1	ipv4 ok; ipv6 ok;

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.ub.edu.bz (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.

Record at _dmarc.ub.edu.bz:

v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@ub.edu.bz; ruf=mailto:dmarc@ub.edu.bz; fo=1; adkim=s; aspf=s

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