Bad routing table in Comcast router c-50-133-90-64.hsd1.mi.comcast.net

We have a block of IP's provided by Comcast and none of our employees in a particular area here in Michigan are able to access any of those IPs. After asking the employees to replace their Comcast modems, and resetting their routers I finally decided to get connected to their computers while they were logged in at their homes to run some traceroutes.  ALL of the employees live within a couple miles of each other and all experience the same bad route shown below.  The packets drop at hop 3. See below:

TEST ONE - Static IP to our mail server

Mikes-iMac:~ $ TRACEROUTE 96.92.XX.XX
TRACEROUTE to 96.92.XX.XX (96.92.XX.XX), 64 hops max, 52 byte packets
 1  router.asus.com (192.168.1.1)  0.998 ms  0.742 ms  0.691 ms
 2  c-68-55-28-1.hsd1.mi.comcast.net (68.55.28.1)  8.422 ms  9.978 ms  8.451 ms
 3  c-50-133-90-64.hsd1.mi.comcast.net (50.133.90.64)  15.730 ms  16.079 ms  16.438 ms
 4  * * *
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TEST TWO - Static IP to our Citrix services

Mikes-iMac:~ $ TRACEROUTE 96.92.XX.XX
TRACEROUTE to 96.92.XX.XX (96.92.XX.XX), 64 hops max, 52 byte packets
 1  router.asus.com (192.168.1.1)  1.056 ms  0.757 ms  0.640 ms
 2  c-68-55-28-1.hsd1.mi.comcast.net (68.55.28.1)  10.145 ms  8.638 ms  15.457 ms
 3  c-50-133-90-64.hsd1.mi.comcast.net (50.133.90.64)  14.263 ms  16.630 ms  15.520 ms
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THREE THREE - Static IP to our Intranet website

Mikes-iMac:~ $ TRACEROUTE 96.92.XX.XX
TRACEROUTE to 96.92.XX.XX (96.92.XX.XX), 64 hops max, 52 byte packets
 1  router.asus.com (192.168.1.1)  1.064 ms  0.769 ms  0.719 ms
 2  c-68-55-28-1.hsd1.mi.comcast.net (68.55.28.1)  8.987 ms  9.208 ms  8.971 ms
 3  c-50-133-90-64.hsd1.mi.comcast.net (50.133.90.64)  19.982 ms  16.155 ms  15.472 ms
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