Yes — tn.com.ar has IPv6.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

IPv6 readiness

Works over IPv6, with gaps: www doesn't fully work over IPv6; its mail servers lack IPv6.

Website over IPv6 tn.com.ar has 2 IPv6 addresses and answers on every one we tested. ✓ 2600:1408:5400:22::b819:7f96 answers · 443✓ 2600:1408:5400:22::b819:7f9c answers · 443	yes
www over IPv6 www.tn.com.ar has no AAAA record.	no
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mail.artear.com.ar ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. lisa.ns.cloudflare.com ✓newt.ns.cloudflare.com ✓	yes

First measured 2026-11-07; last confirmed 2026-11-07.

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://tn.com.ar/ via 2600:1408:5400:22::b819:7f96 → 200

works

What's keeping tn.com.ar from an A

Add IPv6 for www.tn.com.ar
www.tn.com.ar has no AAAA record. Get www's IPv6 address from whoever hosts www and add it as an AAAA record. If the same server already serves both names (and its certificate covers www), you can reuse tn.com.ar's AAAA record(s) for www. How to add an AAAA record
Mail servers without IPv6
mail.artear.com.ar has no AAAA record, so mail from IPv6-only servers can't reach it directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

tn.com.ar Has IPv6

A (IPv4)	23.223.247.225 23.223.247.215
AAAA (IPv6)	2600:1408:5400:22::b819:7f96 2600:1408:5400:22::b819:7f9c

www.tn.com.ar IPv4 only

A (IPv4)	104.18.105.34 104.18.104.34
AAAA (IPv6)	none

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Copy the evidence — a citation-ready record of this measurement

IPv6 measurement: tn.com.ar
Measured 2026-11-15 01:18:36 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    23.223.247.225, 23.223.247.215
AAAA (IPv6): 2600:1408:5400:22::b819:7f96, 2600:1408:5400:22::b819:7f9c
www AAAA:    none

Readiness grade C: Works over IPv6, with gaps: www doesn't fully work over IPv6; its mail servers lack IPv6.
- Website over IPv6: tn.com.ar has 2 IPv6 addresses and answers on every one we tested.
    2600:1408:5400:22::b819:7f96: answers (TCP 443)
    2600:1408:5400:22::b819:7f9c: answers (TCP 443)
- www over IPv6: www.tn.com.ar has no AAAA record.
- Mail servers (MX) have IPv6: None of the mail servers has an AAAA record.
- Nameservers have IPv6: 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.

Reachability = a TCP connection opened on port 443 (or 80).

HTTPS over IPv6 (not graded): Loads over IPv6 with a valid certificate: HTTP 200.
    https://tn.com.ar/ via 2600:1408:5400:22::b819:7f96 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/lnebWdhLP7

Permanent link: aaaa.bot/r/lnebWdhLP7 · How we measure

Checked 2026-11-15 01:18:36 UTC. Full DNS report: dns.pizza/domain/tn.com.ar · Age, certificate and blocklists: how.is/tn.com.ar · JSON: /api/v1/tn.com.ar