Measurement estimates from a single vantage point — not a compliance certification. Guidance below is for operators, not an SLA.
DNS
Dual-stack
[4] 4/4/4 [O]
Meaning: Shows how many authoritative name servers exist, and how many IPv6 endpoints are configured, responsive, and operational.
IPv4 4/4/4 · IPv6 4/4/4 · location O
| Host | IPv4 | IPv6 | Probes |
|---|
ns-684.awsdns-21.net [O] |
205.251.194.172 |
2600:9000:5302:ac00::1 |
ipv4 205.251.194.172 ok; ipv6 2600:9000:5302:ac00::1 ok; |
ns-330.awsdns-41.com [O] |
205.251.193.74 |
2600:9000:5301:4a00::1 |
ipv4 205.251.193.74 ok; ipv6 2600:9000:5301:4a00::1 ok; |
ns-1470.awsdns-55.org [O] |
205.251.197.190 |
2600:9000:5305:be00::1 |
ipv4 205.251.197.190 ok; ipv6 2600:9000:5305:be00::1 ok; |
ns-1645.awsdns-13.co.uk [O] |
205.251.198.109 |
2600:9000:5306:6d00::1 |
ipv4 205.251.198.109 ok; ipv6 2600:9000:5306:6d00::1 ok; |
Mail
Dual-stack
[7 MX] v4 smtp 17/17/17 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 17/17/17 · IPv6 5/5/5 · location O
| Host | IPv4 | IPv6 | Probes |
|---|
alt1.aspmx.l.google.com [O] |
74.125.137.27 |
2607:f8b0:4023:c03::1b |
ipv4 74.125.137.27 ok; ipv6 2607:f8b0:4023:c03::1b ok; |
mx02.mail.icloud.com [O] |
17.42.251.62, 17.56.9.31, 17.57.152.5, 17.57.154.33, 17.57.155.25, 17.57.156.30 |
— |
ipv4 17.42.251.62 ok; ipv4 17.56.9.31 ok; ipv4 17.57.152.5 ok; ipv4 17.57.154.33 ok; ipv4 17.57.155.25 ok; ipv4 17.57.156.30 ok; |
alt2.aspmx.l.google.com [O] |
192.178.231.26 |
2607:f8b0:4023:200d::1a |
ipv4 192.178.231.26 ok; ipv6 2607:f8b0:4023:200d::1a ok; |
aspmx.l.google.com [O] |
192.179.26.27 |
2607:f8b0:400e:c20::1b |
ipv4 192.179.26.27 ok; ipv6 2607:f8b0:400e:c20::1b ok; |
aspmx3.googlemail.com [O] |
192.178.231.26 |
2607:f8b0:4023:200d::1b |
ipv4 192.178.231.26 ok; ipv6 2607:f8b0:4023:200d::1b ok; |
mx01.mail.icloud.com [O] |
17.42.251.62, 17.56.9.31, 17.57.152.5, 17.57.154.33, 17.57.155.25, 17.57.156.30 |
— |
ipv4 17.42.251.62 ok; ipv4 17.56.9.31 ok; ipv4 17.57.152.5 ok; ipv4 17.57.154.33 ok; ipv4 17.57.155.25 ok; ipv4 17.57.156.30 ok; |
aspmx2.googlemail.com [O] |
74.125.137.26 |
2607:f8b0:4023:c03::1a |
ipv4 74.125.137.26 ok; ipv6 2607:f8b0:4023:c03::1a ok; |
📌 Action item(s):
- Publish AAAA records for mail (MX): mx01.mail.icloud.com, mx02.mail.icloud.com.
Web
Dual-stack
[1] 8/8/8 [I]
Meaning: Shows IPv6 web endpoint readiness for the discovered HTTPS host. Operational means family-specific HTTPS requests complete successfully.
IPv4 4/4/4 · IPv6 8/8/8 · location I
| Host | IPv4 | IPv6 | Probes |
|---|
sjsm.org [I] |
18.161.6.4, 18.161.6.70, 18.161.6.125, 18.161.6.48 |
2600:9000:2475:da00:10:60f8:48c0:93a1, 2600:9000:2475:e400:10:60f8:48c0:93a1, 2600:9000:2475:6400:10:60f8:48c0:93a1, 2600:9000:2475:2800:10:60f8:48c0:93a1, 2600:9000:2475:a800:10:60f8:48c0:93a1, 2600:9000:2475:1600:10:60f8:48c0:93a1, 2600:9000:2475:ae00:10:60f8:48c0:93a1, 2600:9000:2475:7400:10:60f8:48c0:93a1 |
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.sjsm.org (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.
Record at _dmarc.sjsm.org:
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.