Latency increased after “network enhancement” – Jackson/Holt MI routing change (18 ms → 30 ms)

Hi,

I’m in the Michigan Center / Jackson, MI area. Since the recent Xfinity “network enhancement” in my region, my latency to nearby servers has roughly doubled.

Before the change, my traffic routed:

jackson.mi.michigan.comcast.net
→ pontiac.mi.michigan.comcast.net
→ chicago.ibone.comcast.net
→ 8.8.8.8 (Google DNS)
Ping: ~18 ms

now it routes

holt.mi.michigan.comcast.net
→ pontiac.mi.michigan.comcast.net
→ chicago.ibone.comcast.net
→ 8.8.8.8
Ping: ~30 ms

So it appears my connection was moved from the Jackson CMTS/headend to the Holt CMTS, adding about 10–12 ms of internal delay before reaching the backbone.

Everything else is working fine—no packet loss or local issues—but this new routing noticeably increases latency to Detroit and Chicago servers (gaming, VoIP, etc.).

Could a network engineer please confirm:

• Was this CMTS or routing change intentional and permanent?
• Is there any plan to restore a Detroit-area handoff path or move my area back under the Jackson aggregation point?

Thanks in advance for looking into it.