altice.com.do — Caribbean IPv6 Monitor

Score0/4

Overall IPv4-only

Collected2026-10-12 20:32 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 name server: blanche.altice.com.do, rouge.altice.com.do.
Publish AAAA records for mail (MX): altice-com-do-1.fortimailcloud.com, altice-com-do-2.fortimailcloud.com.
Web measurement was inconclusive or unavailable.
Enable DNSSEC signing and publish a DNSKEY at the apex. Use DNSViz to validate the full chain.
DMARC is monitoring-only (p=none). Move toward quarantine, then reject. Review on dmarcian.

Checks

DNS

IPv4-only

[2] 0/0/0 [I]

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

IPv4 2/2/2 · IPv6 0/0/0 · location I

Host	IPv4	IPv6	Probes
`blanche.altice.com.do` [I]	190.124.65.248	—	ipv4 190.124.65.248 ok;
`rouge.altice.com.do` [I]	190.124.66.156	—	ipv4 190.124.66.156 ok;

📌 Action item(s):

Publish AAAA records for name server: blanche.altice.com.do, rouge.altice.com.do.

Mail

IPv4-only

[2 MX] v4 smtp 2/2/2 v6 smtp 0/0/0 [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 2/2/2 · IPv6 0/0/0 · location O

Host	IPv4	IPv6	Probes
`altice-com-do-1.fortimailcloud.com` [O]	148.230.56.131	—	ipv4 148.230.56.131 ok;
`altice-com-do-2.fortimailcloud.com` [O]	159.48.178.132	—	ipv4 159.48.178.132 ok;

📌 Action item(s):

Publish AAAA records for mail (MX): altice-com-do-1.fortimailcloud.com, altice-com-do-2.fortimailcloud.com.

Web

Unknown

[0] error: Get "https://www.altice.com.do/personal": net/http: HTTP/1.x transport connection broken: too many transfer encodings: ["chunked" "chunked"]

Meaning: Shows IPv6 web endpoint readiness for the discovered HTTPS host. Operational means family-specific HTTPS requests complete successfully.

IPv4 0/0/0 · IPv6 0/0/0 · location -

📌 Action item(s):

Web measurement was inconclusive or unavailable.

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.altice.com.do (DNS TXT). Shows organizational policy (p=) and subdomain policy (sp=) when set.

Record at _dmarc.altice.com.do:

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.