tas.sr — Caribbean IPv6 Monitor

Score2/4

Overall IPv4-only

Collected2026-10-13 20:33 UTC

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

Priority next steps

Publish AAAA records for web host: tas.sr.
Enable DNSSEC signing and publish a DNSKEY at the apex. Use DNSViz to validate the full chain.
Tighten DMARC toward p=reject when ready. Review on dmarcian.

Dual-stack

[2] 2/2/2 [O]

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

IPv4 2/2/2 · IPv6 2/2/2 · location O

Host	IPv4	IPv6	Probes
`ns51.domaincontrol.com` [O]	97.74.105.26	2603:5:2192::1a	ipv4 97.74.105.26 ok; ipv6 2603:5:2192::1a ok;
`ns52.domaincontrol.com` [O]	173.201.73.26	2603:5:2292::1a	ipv4 173.201.73.26 ok; ipv6 2603:5:2292::1a ok;

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
`tas-sr.mail.protection.outlook.com` [O]	52.101.42.162, 52.101.41.21, 52.101.50.13, 52.101.60.68	2a01:111:f403:c922::6, 2a01:111:f403:f90a::8, 2a01:111:f403:c803::, 2a01:111:f403:f801::	ipv4 52.101.42.162 ok; ipv4 52.101.41.21 ok; ipv4 52.101.50.13 ok; ipv4 52.101.60.68 ok; ipv6 2a01:111:f403:c922::6 ok; ipv6 2a01:111:f403:f90a::8 ok; ipv6 2a01:111:f403:c803:: ok; ipv6 2a01:111:f403:f801:: 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 1/1/1 · IPv6 0/0/0 · location I

Host	IPv4	IPv6	Probes
`tas.sr` [I]	209.142.202.240	—	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=quarantine

p=quarantine — published organizational policy. Ask receivers to quarantine failing mail; reject is stronger.

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

Record at _dmarc.tas.sr:

v=DMARC1; p=quarantine; fo=1

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

📌 Action item(s):