Measurement estimates from a single vantage point — not a compliance certification. Guidance below is for operators, not an SLA.
DNS
Dual-stack
[3] 3/3/3 [I]
Meaning: Shows how many authoritative name servers exist, and how many IPv6 endpoints are configured, responsive, and operational.
IPv4 3/3/3 · IPv6 3/3/3 · location I
| Host | IPv4 | IPv6 | Probes |
|---|
ns3.upr.edu [I] |
40.71.219.138 |
2603:1030:20e:2::f9 |
ipv4 40.71.219.138 ok; ipv6 2603:1030:20e:2::f9 ok; |
upr1.upr.edu [I] |
136.145.1.4 |
2607:2000:0:1::4 |
ipv4 136.145.1.4 ok; ipv6 2607:2000:0:1::4 ok; |
ns2.upr.edu [I] |
136.145.11.4 |
2607:2000:0:11::4 |
ipv4 136.145.11.4 ok; ipv6 2607:2000:0:11::4 ok; |
Mail
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 |
|---|
upr-edu.mail.protection.outlook.com [O] |
40.93.192.4, 52.101.42.18, 52.101.10.6, 52.101.40.26 |
2a01:111:f403:c946::3, 2a01:111:f403:c902::6, 2a01:111:f403:f908::1, 2a01:111:f403:c946::1c |
ipv4 40.93.192.4 ok; ipv4 52.101.42.18 ok; ipv4 52.101.10.6 ok; ipv4 52.101.40.26 ok; ipv6 2a01:111:f403:c946::3 ok; ipv6 2a01:111:f403:c902::6 ok; ipv6 2a01:111:f403:f908::1 ok; ipv6 2a01:111:f403:c946::1c ok; |
Web
Dual-stack
[1] 1/1/1 [I]
Meaning: Shows IPv6 web endpoint readiness for the discovered HTTPS host. Operational means family-specific HTTPS requests complete successfully.
IPv4 1/1/1 · IPv6 1/1/1 · location I
| Host | IPv4 | IPv6 | Probes |
|---|
www.upr.edu [I] |
136.145.11.224 |
2607:2000:0:11::224 |
ipv4 ok; ipv6 ok; |
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
p=reject, sp=none
p=reject, sp=none — published organizational policy. Strongest published policy (SPF/DKIM alignment still not measured here).
Meaning: Published DMARC policy at _dmarc.upr.edu (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.
Record at _dmarc.upr.edu:
v=DMARC1; p=reject; rua=mailto:cartero@upr.edu; ruf=mailto:cartero@upr.edu; aspf=r; pct=100; rf=afrf; ri=86400; sp=none
Policy publication only — SPF/DKIM not measured. Not part of the 0–4 row score.
Check on dmarcian