What's at the Other End of 8.8.8.8?
3 months ago
- #Networking
- #DNS
- 8.8.8.8 is Google’s free, global DNS resolution service.
- Queries from 8.8.8.8 originate from various Google-owned IP addresses, not 8.8.8.8 itself.
- The author tested 8.8.8.8 using a wildcard DNS service (nip.io & sslip.io).
- DNS queries were logged, showing random capitalization and varied source IPs (IPv4 and IPv6).
- Only 3% of 256 test queries were forwarded to the author’s Warsaw server.
- Google uses random capitalization to mitigate DNS cache poisoning.
- Most queries use UDP; TCP is rarely used (0.0002% of queries).
- Source IPs confirmed to belong to Google via ARIN lookups.