Measurement estimates from a single vantage point — not a compliance certification. Guidance below is for operators, not an SLA.
DNS
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 |
|---|
laura.ns.cloudflare.com [O] |
173.245.58.183, 172.64.32.183, 108.162.192.183 |
2a06:98c1:50::ac40:20b7, 2803:f800:50::6ca2:c0b7, 2606:4700:50::adf5:3ab7 |
ipv4 173.245.58.183 ok; ipv4 172.64.32.183 ok; ipv4 108.162.192.183 ok; ipv6 2a06:98c1:50::ac40:20b7 ok; ipv6 2803:f800:50::6ca2:c0b7 ok; ipv6 2606:4700:50::adf5:3ab7 ok; |
jay.ns.cloudflare.com [O] |
173.245.59.123, 172.64.33.123, 108.162.193.123 |
2a06:98c1:50::ac40:217b, 2803:f800:50::6ca2:c17b, 2606:4700:58::adf5:3b7b |
ipv4 173.245.59.123 ok; ipv4 172.64.33.123 ok; ipv4 108.162.193.123 ok; ipv6 2a06:98c1:50::ac40:217b ok; ipv6 2803:f800:50::6ca2:c17b ok; ipv6 2606:4700:58::adf5:3b7b ok; |
Mail
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 |
|---|
alt4.aspmx.l.google.com [O] |
172.253.145.27 |
2607:f8b0:4023:3003::1b |
ipv4 172.253.145.27 ok; ipv6 2607:f8b0:4023:3003::1b ok; |
aspmx.l.google.com [O] |
142.250.107.26 |
2607:f8b0:400e:c0d::1a |
ipv4 142.250.107.26 ok; ipv6 2607:f8b0:400e:c0d::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; |
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; |
Web
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 |
|---|
www.marianas.edu [I] |
104.21.78.182, 172.67.168.83 |
2606:4700:3033::6815:4eb6, 2606:4700:3037::ac43:a853 |
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=none
p=none — published organizational policy. Monitoring only (receivers should not reject mail); tighten toward quarantine, then reject when ready. Not the same as missing DMARC.
Meaning: Published DMARC policy at _dmarc.marianas.edu (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.
Record at _dmarc.marianas.edu:
v=DMARC1; p=none;
Policy publication only — SPF/DKIM not measured. Not part of the 0–4 row score.
Check on dmarcian
📌 Action item(s):
- DMARC is monitoring-only (p=none). Move toward quarantine, then reject. Review on dmarcian.