Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.
github.io IPv4 only
| A (IPv4) | 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 |
|---|---|
| AAAA (IPv6) | none |
www.github.io IPv6 ready
| A (IPv4) | 185.199.109.153 185.199.110.153 185.199.111.153 185.199.108.153 |
|---|---|
| AAAA (IPv6) | 2606:50c0:8001::153 2606:50c0:8000::153 2606:50c0:8002::153 2606:50c0:8003::153 |
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.
If it's your site: an AAAA record has to point at an IPv6 address your hosting provider gives you — you can't make one up from the IPv4. How to add one · Why some hosts don't offer it
Checked 2026-10-30 00:13:35 UTC. Full DNS report: dns.pizza/domain/github.io · JSON: /api/v1/github.io