Expand Google Public DNS IPv6 Address
Expand Google's public DNS IPv6 address 2001:4860:4860::8888 to its full form. Useful for DNS configuration and network troubleshooting.
Well-Known Addresses
Detailed Explanation
Google Public DNS IPv6
The address 2001:4860:4860::8888 expands to:
2001:4860:4860:0000:0000:0000:0000:8888
Expansion Process
The :: replaces four consecutive zero groups (groups 4-7):
| Group | Compressed | Expanded |
|---|---|---|
| 1 | 2001 | 2001 |
| 2 | 4860 | 4860 |
| 3 | 4860 | 4860 |
| 4-7 | (::) | 0000 x4 |
| 8 | 8888 | 8888 |
Address Classification
- Type: Global Unicast (prefix
2000::/3) - Scope: Global (publicly routable)
- ASN: AS15169 (Google LLC)
- Purpose: Public recursive DNS resolver
Google DNS Addresses
| Protocol | Primary | Secondary |
|---|---|---|
| IPv4 | 8.8.8.8 | 8.8.4.4 |
| IPv6 | 2001:4860:4860::8888 | 2001:4860:4860::8844 |
DNS Configuration
To use Google DNS over IPv6, add to your resolver configuration:
nameserver 2001:4860:4860::8888
nameserver 2001:4860:4860::8844
Use Case
Used when configuring DNS resolvers in /etc/resolv.conf, systemd-resolved, or network interface settings. Essential for IPv6-only networks that need reliable DNS resolution. Also used in DNS troubleshooting with dig or nslookup to test IPv6 DNS connectivity.