Comcast contact regarding /32 nullroute

[Randy <amps () djlab com>]

Someone/something is announcing a /32 from our IP space into comcast 
from a private ASN.   Could someone from comcast help at least provide 
me some more information off-list?   Normal support channels are not 
helping.

route-server.newyork.ny.ibone>show ip bgp 74.115.212.130
BGP routing table entry for 74.115.212.130/32, version 2713438548
Paths: (13 available, best #10, table Default-IP-Routing-Table, not
advertised to EBGP peer)
  Advertised to update-groups:
     2
  64650, (received & used)
    68.86.80.4 (metric 69635) from 68.86.80.4 (68.86.1.4)
      Origin incomplete, metric 0, localpref 100, valid, internal
      Community: 64650:50001 no-export

It should instead look like this.

route-server.newyork.ny.ibone>show ip bgp 74.115.212.129
BGP routing table entry for 74.115.212.0/22, version 2674585749
Paths: (13 available, best #12, table Default-IP-Routing-Table)
  Advertised to update-groups:
     2
  29944 29889, (received & used)
    68.86.1.89 (metric 66845) from 68.86.80.4 (68.86.1.4)
      Origin IGP, metric 0, localpref 300, valid, internal
      Community: 7922:89 7922:2900
      Originator: 68.86.1.89, Cluster list: 68.86.1.4, 68.86.1.0

--
~Randy