Yes — prnewswire.com has IPv6.

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

This is a saved measurement from 2026-10-31 04:04 UTC. Check prnewswire.com live now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 prnewswire.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:4408::ac40:9bd1 answers · 443✓ 2a06:98c1:3101::6812:202f answers · 443	yes
www over IPv6 www.prnewswire.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:440c::ac40:97d8 answers · 443✓ 2a06:98c1:3101::6812:2428 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. d361799a.ess.barracudanetworks.com ✗d361799b.ess.barracudanetworks.com ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ara.ns.cloudflare.com ✓bart.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.

https://prnewswire.com/ via 2606:4700:4408::ac40:9bd1 → 301https://www.prnewswire.com/ via 2606:4700:440c::ac40:97d8 → 200

works

What's keeping prnewswire.com from an A

Mail servers without IPv6
d361799a.ess.barracudanetworks.com, d361799b.ess.barracudanetworks.com have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

prnewswire.com Has IPv6

A (IPv4)	104.18.32.47 172.64.155.209
AAAA (IPv6)	2606:4700:4408::ac40:9bd1 2a06:98c1:3101::6812:202f

www.prnewswire.com Has IPv6

A (IPv4)	172.64.151.216 104.18.36.40
AAAA (IPv6)	2606:4700:440c::ac40:97d8 2a06:98c1:3101::6812:2428

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: prnewswire.com
Measured 2026-10-31 04:04:33 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.18.32.47, 172.64.155.209
AAAA (IPv6): 2606:4700:4408::ac40:9bd1, 2a06:98c1:3101::6812:202f
www AAAA:    2606:4700:440c::ac40:97d8, 2a06:98c1:3101::6812:2428

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: prnewswire.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:4408::ac40:9bd1: answers (TCP 443)
    2a06:98c1:3101::6812:202f: answers (TCP 443)
- www over IPv6: www.prnewswire.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:440c::ac40:97d8: answers (TCP 443)
    2a06:98c1:3101::6812:2428: answers (TCP 443)
- 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 after 1 redirect: HTTP 200.
    https://prnewswire.com/ via 2606:4700:4408::ac40:9bd1 -> HTTP 301, certificate: valid
    https://www.prnewswire.com/ via 2606:4700:440c::ac40:97d8 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/Fp1vjzIeBZ

Permanent link: aaaa.bot/r/Fp1vjzIeBZ · How we measure

Checked 2026-10-31 04:04:33 UTC. Full DNS report: dns.pizza/domain/prnewswire.com · JSON: /api/v1/prnewswire.com