Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.
D
IPv6 readiness
The website has no IPv6.
Website over IPv6 xn--pssu9d1v5ck2q.ren has no AAAA record.
no
www over IPv6 www.xn--pssu9d1v5ck2q.ren has no AAAA record.
no
Mail servers (MX) have IPv6 No MX records, so mail goes to the domain's own address (implicit MX). It has no AAAA record.
no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
n1.xundns.com ✓n2.xundns.com ✓
yes
What's keeping xn--pssu9d1v5ck2q.ren from an A
xn--pssu9d1v5ck2q.ren is an alias of 6018xin.91vip10.91dun.vip, which has no IPv6 xn--pssu9d1v5ck2q.ren is a CNAME, so it can't also have its own AAAA record. Ask whoever runs 6018xin.91vip10.91dun.vip to enable IPv6 there — or replace the alias with the A and AAAA records they give you. Why some hosts don't offer IPv6
Add IPv6 for www.xn--pssu9d1v5ck2q.ren www.xn--pssu9d1v5ck2q.ren 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 xn--pssu9d1v5ck2q.ren's AAAA record(s) for www. How to add an AAAA record
Mail servers without IPv6 Your domain's mail goes to its own address, which has no AAAA record.
Visitors on IPv6-only networks (many mobile carriers) can still reach it, but only through a translator their carrier runs (NAT64). The site itself has no IPv6 address — and you can't make one up from the IPv4. Why some hosts don't offer it
Copy the evidence— a citation-ready record of this measurement