Does cnn.com support IPv6?
Partly. On November 6, 2026, www.cnn.com answered over IPv6, but its home page loads from 14 hosts and 5 of them are IPv4-only, so an IPv6-only connection gets the page with those parts missing.
Hosts that block an IPv6-only load
These hosts publish an IPv4 address but no AAAA record. Over an IPv6-only connection the browser cannot fetch anything they serve.
- cdn.adsafeprotected.com — link rel=dns-prefetch, link rel=preconnect
- config.aps.amazon-adsystem.com — link rel=dns-prefetch, link rel=preconnect
- ib.adnxs.com — link rel=dns-prefetch, link rel=preconnect
- js-sec.indexww.com — link rel=dns-prefetch, link rel=preconnect
- segment-data-us-east.zqtk.net — link rel=dns-prefetch, link rel=preconnect
Every host the cnn.com home page loads from
| Host | Protocol | AAAA record |
|---|---|---|
| www.cnn.comThe page itself | IPv6 | 2a04:4e42:200::773 |
| cdn.adsafeprotected.com | IPv4 only | — |
| config.aps.amazon-adsystem.com | IPv4 only | — |
| ib.adnxs.com | IPv4 only | — |
| js-sec.indexww.com | IPv4 only | — |
| segment-data-us-east.zqtk.net | IPv4 only | — |
| cdn.optimizely.com | IPv6 | 2606:4700::6812:4239 |
| pagead2.googlesyndication.com | IPv6 | 2a00:1450:4026:800::2002 |
| registry.api.cnn.io | IPv6 | 2a04:4e42::773 |
| securepubads.g.doubleclick.net | IPv6 | 2a00:1450:4026:808::2002 |
| static.adsafeprotected.com | IPv6 | 2600:9000:278c:7a00:8:48e:53c0:93a1 |
| tpc.googlesyndication.com | IPv6 | 2a00:1450:4026:807::2001 |
| www.google.com | IPv6 | 2001:4860:482d:7700:: |
| www.googletagservices.com | IPv6 | 2a00:1450:4010:c07::9a |
Can I reach cnn.com through an IPv6 proxy?
An IPv6-only route reaches the site but not every resource. Use IPv4, or a plan that falls back to IPv4, when the missing parts matter to you, such as a script that renders prices.
How this was measured
The IPv6 test loaded https://www.cnn.com/ once on November 6, 2026, read every host the returned HTML asks a browser to fetch, and looked up AAAA and A records for each. Hosts added later by JavaScript are not counted, and other pages on the site can depend on different hosts. Results change as sites move providers.