: The 3.3 release of Cisco Identity Services Engine often involves DNS-related patches and security updates.
While there were early rumors in tech communities like Hacker News that Amazon might launch a consumer-facing free DNS service similar to Cloudflare on this easy-to-remember IP, that has not officially materialized for the general public. Is 3.3.3.3 a Functional Public DNS Resolver? dns 3.3.3.3
| IP | Purpose | Filtering | Logging | |----|---------|-----------|---------| | 3.3.3.3 | Primary/fallback | Malware only | 24h rolling | | 4.4.4.4 | Primary/blocking | Malware + phishing + botnet | 24h rolling | : The 3