Question about WEIRD IP change after enabling proxy
Hi,
Sorry to bother,I have a question about the IPs assigned by the system after turning on the proxy.
I noticed that normally the system provides two IPs for my domain for proxy, which are basically the same as those used by domain.cdn.cloudflare.net. These worked well and could be accessed from China.
However, recently I found that when I check the A record, it now returns multiple IPs (currently 7), all starting with 104.21.x.x. Unfortunately, these IPs are much slower and most of them are blocked in China.
Interestingly, domain.cdn.cloudflare.net is still using the original two IPs, and they work perfectly from China. So I’m wondering:
• Why did the assigned IPs change?
• Is there a way to get back to the previous two IPs?
I suspect this change might be related to when I experimented with the SaaS feature. Even though I deleted all the SaaS settings afterward, the IPs didn’t revert and still remained as multiple 104.21.x.x ones.
As a temporary fix, I deleted the zone and added the domain to a new Cloudflare account. That restored the original two IPs (same as domain.cdn.cloudflare.net), and everything is working again in China. But I really want to understand what triggered the change, in case it happens again — creating new accounts every time isn’t a sustainable solution 😣
Thank you so much for your time 🙏
Best regards,
Wei C.
2 Replies
Feedback
Feedback has been submitted! Thank you :)
I understand that Cloudflare doesn’t guarantee performance in China, and I’m also aware that the IPs provided by Cloudflare are dynamic and may change over time.
From what I remember, the IPs assigned to my domain used to match the ones from domain.cdn.cloudflare.net. Even though they were dynamically assigned, they always aligned with that CNAME.
I’d like to understand what caused the recent change — why are the newly assigned IPs now different from those of domain.cdn.cloudflare.net, and why are there so many of them? Unfortunately, most of these new IPs are not accessible from China, while the IPs used by domain.cdn.cloudflare.net still work normally.
I don’t expect premium performance in China, but I do hope to keep at least basic connectivity. Right now, the new IPs make the domain almost completely inaccessible from China, which breaks the most essential use cases.
The changes of my account, doesn’t seem like normal dynamic IP switching, more like I turned on some functions which caused IP changes. I just want to found out the reason and trying to avoid it happened again.
Got it.
I just wanted to check because I always thought domain.cdn.cloudflare.net reflects the same IPs the system assigns — but now they’re different, so I was wondering why.
If these are part of a new IP range, I can understand that (maybe :MeowHeartCloudflare:). Just want you to know that I’m not trying to customize IPs or anything (like some privilege) — if I wanted that, I know SaaS could help already, it could makes me use the cname which cf provided directly. I’m really just here to figure out what happened, after all, I applied a new account and make things works already (in case you misunderstood my intention :MeowHeartCloudflare:).
Glad to hear I didn’t do anything wrong.
Cheers anyway, have a good one.