If you REALLY want to get a list of all prefixes announced by an AS, you need a view into the BGP table. You can accomplish this by using your own BGP router or a looking-glass server.
For example, here’s a list of all networks announced by AS45595:
route-views>sh ip bgp regexp 45595$
Network Next Hop Metric LocPrf Weight Path
*> 39.32.0.0/18 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.32.0.0/11 154.11.63.85 0 852 174 17557 45595 i
*> 39.32.64.0/18 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.32.128.0/17 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.33.0.0/17 154.11.63.85 0 852 174 17557 45595 i
*> 39.34.0.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.35.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.36.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.37.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.40.0.0/13 154.11.63.85 0 852 174 17557 45595 i
*> 39.41.128.0/18 154.11.63.85 0 852 174 17557 45595 ?
*> 39.41.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.41.192.0/18 154.11.63.85 0 852 174 17557 45595 ?
*> 39.42.0.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.42.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.42.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.43.0.0/17 154.11.63.85 0 852 174 17557 45595 i
*> 39.44.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.45.0.0/18 154.11.63.85 0 852 7473 8966 8966 8966 8966 8966 8966 8966 17557 45595 ?
*> 39.45.0.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.45.64.0/18 154.11.63.85 0 852 7473 8966 8966 8966 8966 8966 8966 8966 17557 45595 ?
*> 39.45.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.46.0.0/16 154.11.63.85 0 852 174 17557 45595 i
*> 39.47.0.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.47.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.48.0.0/16 154.11.63.85 0 852 2914 3356 17557 45595 i
*> 39.48.0.0/13 154.11.63.85 0 852 174 17557 45595 i
*> 39.49.0.0/16 154.11.63.85 0 852 174 17557 45595 i
*> 39.50.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.51.0.0/17 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.51.128.0/19 154.11.63.85 0 852 7473 17557 17557 17557 17557 17557 17557 17557 17557 17557 17557 17557 45595 i
*> 39.52.0.0/16 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.53.0.0/16 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.54.0.0/16 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 39.55.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.56.40.0/22 154.11.63.85 0 852 7473 17557 45595 i
*> 39.56.92.0/22 154.11.63.85 0 852 7473 17557 45595 i
*> 39.56.96.0/22 154.11.63.85 0 852 7473 17557 45595 i
*> 39.56.100.0/22 154.11.63.85 0 852 7473 17557 45595 i
*> 39.56.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 39.58.0.0/16 154.11.63.85 0 852 174 17557 45595 ?
*> 39.59.0.0/16 154.11.63.85 0 852 174 17557 45595 i
*> 39.62.160.0/19 154.11.63.85 0 852 7473 17557 45595 ?
*> 39.62.192.0/19 154.11.63.85 0 852 7473 17557 45595 ?
*> 39.62.224.0/19 154.11.63.85 0 852 7473 17557 45595 ?
*> 39.63.64.0/19 154.11.63.85 0 852 7473 17557 45595 ?
*> 39.63.96.0/19 154.11.63.85 0 852 7473 17557 45595 ?
*> 39.63.128.0/19 154.11.63.85 0 852 7473 17557 45595 ?
*> 59.103.0.0/19 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.48.0/20 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.63.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.64.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.65.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.66.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.67.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.68.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.69.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.70.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.71.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.72.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.73.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.74.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.75.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.76.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.90.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.91.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.92.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.93.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.94.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.95.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.96.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.97.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.98.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.99.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.128.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.129.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.132.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.144.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.151.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 59.103.155.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.156.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.157.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.158.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.159.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.164.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.165.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.166.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.167.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 59.103.168.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 59.103.192.0/20 154.11.63.85 0 852 174 17557 45595 i
*> 59.103.208.0/20 154.11.63.85 0 852 174 17557 45595 i
*> 59.103.224.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 116.71.96.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 116.71.160.0/20 154.11.63.85 0 852 174 17557 45595 e
*> 116.71.176.0/20 154.11.63.85 0 852 174 17557 45595 e
*> 116.71.192.0/18 154.11.63.85 0 852 174 17557 45595 e
*> 116.71.243.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 116.71.244.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 116.71.251.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 119.152.0.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.0.0/13 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.4.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.16.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.18.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.19.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.21.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.22.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.23.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.24.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.32.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.40.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.48.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.49.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.50.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.51.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.52.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.53.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.54.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.55.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.56.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.57.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.58.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.59.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.60.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.61.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.62.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.63.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.64.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.72.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.80.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.84.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.88.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.96.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.104.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.112.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.120.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.127.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.128.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.129.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.130.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.131.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.132.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.133.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.134.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.135.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.136.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.137.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.138.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.139.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.140.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.141.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.142.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.144.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.148.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.152.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.156.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.160.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.164.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.168.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.172.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.176.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.180.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.184.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.188.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.192.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.196.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.200.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.204.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.208.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.212.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.216.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.220.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.224.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.228.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.232.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.236.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.240.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.244.0/23 154.11.63.85 0 852 174 17557 45595 e
*> 119.152.246.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.152.247.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.152.255.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 119.153.0.0/18 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.64.0/20 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.80.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.80.0/20 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.96.0/19 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.128.0/19 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.160.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.164.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.168.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.172.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.176.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.180.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.184.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.188.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.192.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.196.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.200.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.153.204.0/22 154.11.63.85 0 852 174 17557 45595 e
*> 119.154.0.0/17 154.11.63.85 0 852 174 17557 45595 i
*> 119.154.128.0/19 154.11.63.85 0 852 174 17557 45595 ?
*> 119.154.160.0/19 154.11.63.85 0 852 174 17557 45595 ?
*> 119.154.192.0/19 154.11.63.85 0 852 174 17557 45595 i
*> 119.154.224.0/19 154.11.63.85 0 852 174 17557 45595 i
*> 119.155.0.0/20 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.16.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.24.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.32.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.40.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.48.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.56.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.64.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.72.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.80.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.88.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.96.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.112.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.120.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.128.0/21 154.11.63.85 0 852 174 17557 45595 e
*> 119.155.153.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.16.0/21 154.11.63.85 0 852 174 17557 45595 i
*> 119.156.208.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.210.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.213.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 119.156.214.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 119.156.215.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.216.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.217.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.218.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.219.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.220.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.221.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 119.156.255.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 119.157.0.0/18 154.11.63.85 0 852 174 17557 45595 ?
*> 119.157.0.0/17 154.11.63.85 0 852 174 17557 45595 i
*> 119.157.128.0/17 154.11.63.85 0 852 174 17557 45595 i
*> 119.158.0.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 119.158.0.0/17 154.11.63.85 0 852 174 17557 45595 45595 45595 45595 45595 45595 i
*> 119.158.96.0/19 154.11.63.85 0 852 174 17557 45595 ?
*> 119.158.192.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 119.159.0.0/17 154.11.63.85 0 852 174 17557 45595 i
*> 119.159.128.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 119.159.152.0/21 154.11.63.85 0 852 174 17557 45595 i
*> 119.159.160.0/20 154.11.63.85 0 852 174 17557 45595 i
*> 119.159.176.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 119.159.192.0/19 154.11.63.85 0 852 174 17557 45595 i
*> 119.159.250.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 119.159.255.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.0.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.0.0/12 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.1.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.8.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.12.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.13.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.18.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.27.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.30.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.31.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.39.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.40.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.130.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.131.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.145.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.146.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.202.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.176.203.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.178.0.0/17 154.11.63.85 0 852 2914 6762 17557 45595 i
*> 182.178.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 182.179.64.0/18 154.11.63.85 0 852 174 17557 45595 ?
*> 182.179.232.0/21 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.0.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.16.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.32.0/20 154.11.63.85 0 852 174 17557 45595 i
*> 182.180.64.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.180.126.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.180.143.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.146.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.147.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.149.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.152.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.153.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.180.188.0/24 154.11.63.85 0 852 174 17557 45595 e
*> 182.180.224.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.181.128.0/17 154.11.63.85 0 852 2914 3356 17557 45595 i
*> 182.182.0.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 182.183.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 182.184.1.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.2.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.3.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.7.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.8.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.9.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.45.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.184.114.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.184.123.0/24 154.11.63.85 0 852 174 17557 45595 ?
*> 182.184.128.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 182.185.0.0/19 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 182.185.0.0/17 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 182.185.32.0/19 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 182.185.64.0/19 154.11.63.85 0 852 7473 8966 8966 8966 8966 8966 8966 8966 17557 45595 ?
*> 182.185.96.0/19 154.11.63.85 0 852 7473 8966 8966 8966 8966 8966 8966 8966 17557 45595 ?
*> 182.185.128.0/18 154.11.63.85 0 852 6453 6762 17557 45595 i
*> 182.185.128.0/17 154.11.63.85 0 852 6453 5511 17557 45595 i
*> 182.186.0.0/17 154.11.63.85 0 852 7473 17557 45595 ?
*> 182.186.128.0/17 154.11.63.85 0 852 6453 6762 17557 45595 i
*> 182.187.0.0/18 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.0.0/17 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.64.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.187.144.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.160.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.176.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.192.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.208.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.224.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.187.240.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 182.188.64.0/18 154.11.63.85 0 852 174 17557 45595 e
*> 182.188.128.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.188.192.0/19 154.11.63.85 0 852 174 17557 45595 i
*> 182.188.224.0/21 154.11.63.85 0 852 174 17557 45595 i
*> 182.188.232.0/21 154.11.63.85 0 852 174 17557 45595 i
*> 182.188.240.0/21 154.11.63.85 0 852 174 17557 45595 i
*> 182.188.254.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.188.255.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.189.0.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.189.64.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.189.128.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.189.192.0/18 154.11.63.85 0 852 174 17557 45595 i
*> 182.190.0.0/24 154.11.63.85 0 852 174 17557 45595 i
*> 182.190.128.0/19 154.11.63.85 0 852 174 17557 45595 i
*> 182.191.192.0/20 154.11.63.85 0 852 174 17557 45595 i
*> 182.191.208.0/20 154.11.63.85 0 852 174 17557 45595 ?
*> 203.99.160.0/19 154.11.63.85 0 852 174 17557 45595 e
*> 203.99.165.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.99.166.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.99.167.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.128.252.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.128.254.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.128.255.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.11.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.13.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.16.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.20.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.24.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.25.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.26.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.30.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.33.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.34.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.35.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.36.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.37.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.38.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.41.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.43.0 154.11.63.85 0 852 174 17557 45595 ?
*> 203.135.48.0 154.11.63.85 0 852 174 17557 45595 ?
*> 203.135.49.0 154.11.63.85 0 852 174 17557 45595 e
*> 203.135.50.0 154.11.63.85 0 852 174 17557 45595 i
*> 203.135.54.0 154.11.63.85 0 852 174 17557 45595 ?
*> 203.135.58.0 154.11.63.85 0 852 174 17557 45595 ?
That’s 358 (unsummarized) entries for the AS alone. These aren’t summarized and you want to summarize the subnets before putting them into a block list or ACL.
And you’ll want to update the block list regularly, perhaps once a day. That’s a lot of ranges you’ll be blocking.
The best place for this (if you want to just block the traffic) is a firewall, not Discourse itself. You don’t want to kill performance for the legitimate users.