[SANOG] How to get off the Bogon IP list or get an incorrectly advertised BGP announcement fixed

[Suresh Ramasubramanian]

Tarun Dua [17/02/14 23:13 +0530]:
>The prefix in question is 205.147.96.0/21

Cogent seems to think - and whois too - that it is split into /23s
See the routeviews entries as well below

http://www.onesc.net/communities/as174/ says 
174:21001	Route is NA internal or customer route.

by the way. And there's rr.arin.net / radb.net route registry entries for
the covering /20 assigned to a legacy provider. Looks like that IP space
was reclaimed by arin and allocated to apnic.

suresh at samwise 12:17:34 <~> $ whois -h rr.arin.net 205.147.96.0/21
% This is the ARIN Routing Registry.

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '205.147.96.0/20AS18999'

route:          205.147.96.0/20
descr:          Poplar Bluff Internet, Inc.
                 P.O. Box 190
                 Poplar Bluff, MO  63902
                 US
origin:         AS18999
mnt-by:         MNT-POPL
source:         ARIN # Filtered


suresh at samwise 12:17:38 <~> $ whois -h whois.radb.net 205.147.96.0/21
route:      205.147.96.0/20
descr:      Forced Object Correction
origin:     AS18999
mnt-by:     MAINT-AS7132
changed:    backbone at sbis.sbc.com 20060607
source:     RADB

route:          205.147.96.0/20
descr:          Poplar Bluff Internet, Inc.
                 P.O. Box 190
                 Poplar Bluff, MO  63902
                 US
origin:         AS18999
mnt-by:         MNT-POPL
changed:        james at semo.net 20051003
source:         ARIN

routeviews lookups -

BGP routing table entry for 205.147.96.0/21, version 436273
Paths: (31 available, best #30, table Default-IP-Routing-Table)
   Not advertised to any peer
   5459 174
     195.66.232.239 from 195.66.232.239 (195.66.232.239)
       Origin IGP, localpref 100, valid, external
       Community: 174:21001 174:22013 5459:1 5459:60
   3356 174
     4.69.184.193 from 4.69.184.193 (4.69.184.193)
       Origin IGP, metric 0, localpref 100, valid, external
       Community: 3356:3 3356:22 3356:86 3356:575 3356:666 3356:2012
   2914 174
     129.250.0.11 from 129.250.0.11 (129.250.0.12)
       Origin IGP, metric 7, localpref 100, valid, external
       Community: 2914:420 2914:1008 2914:2000 2914:3000 65504:174
   6939 1299 174
     216.218.252.164 from 216.218.252.164 (216.218.252.164)

Using cogent's looking glass
http://www.cogentco.com/en/network/looking-glass

I just get an entry for the /23 and then for another /23 but not a covering
/21

BGP routing table entry for 205.147.96.0/23, version 2088153801
Paths: (1 available, best #1, table Default-IP-Routing-Table)
   9498 17439 2.1348
     38.122.147.122 (metric 10166061) from 154.54.66.76 (154.54.66.76)
       Origin IGP, localpref 130, valid, internal, best
       Community: 174:981 174:10017 174:20999 174:21001 174:22013
       Originator: 66.28.1.39, Cluster list: 154.54.66.76, 66.28.1.69,
66.28.1.89, 66.28.1.68

BGP routing table entry for 205.147.98.0/23, version 2088153802
Paths: (1 available, best #1, table Default-IP-Routing-Table)
   9498 17439 2.1348
     38.122.147.122 (metric 10166061) from 154.54.66.76 (154.54.66.76)
       Origin IGP, localpref 130, valid, internal, best
       Community: 174:981 174:10017 174:20999 174:21001 174:22013
       Originator: 66.28.1.39, Cluster list: 154.54.66.76, 66.28.1.69,
66.28.1.89, 66.28.1.68