Cannot reach any mainland China servers since Oct 24 (traceroute dies after entering China Telecom 202.97.x) - Seattle

Since Oct 24, 2026 around 5:25 PM PT, my Xfinity home connection in Seattle cannot reach any server hosted in mainland China. TCP 443 and ping both time out, while all other sites work normally. The same sites load fine from my phone's cellular data and from other US networks, so the problem appears to be on the Xfinity path.

Examples that fail: drive.quark.cn (203.119.146.35), ark.cn-beijing.volces.com (101.126.13.31), 220.181.38.148, taobao.com, jd.com. Sites served from Hong Kong or other overseas edges still work.

Traceroute: my gateway, then the Comcast backbone; the last Comcast hop is 96.110.36.218, then it enters China Telecom 202.97.x and gets no further response. China Mobile destinations stop at 223.120.x the same way.

This looks very similar to the March 2026 Xfinity to China routing issue that Comcast acknowledged. Could someone please escalate this to network engineering to check the international routing and peering for my line? Please do not change my public IP; I need to keep it.

Thanks.