HomeASN LookupAS21508Prefixes

AS21508 Announced Prefixes

219 prefixes originated in BGP by AS21508 Comcast Cable Communications.

Prefixes 1-100

PrefixRPKIIRRLast Seen
23.25.96.0/19 Valid-2026-10-11
23.25.186.0/23 Valid-2026-10-11
23.31.96.0/20 Valid-2026-10-11
24.124.151.0/24 Valid-2026-10-11
24.124.162.0/23 Valid-2026-10-11
24.124.248.0/21 Valid-2026-10-11
24.131.0.0/20 ValidOther IRR2026-10-11
50.73.8.0/22 Valid-2026-10-11
50.73.224.0/20 Valid-2026-10-11
50.77.72.0/21 Valid-2026-10-11
50.78.232.0/21 Valid-2026-10-11
50.184.128.0/19 Valid-2026-10-11
50.186.32.0/19 Valid-2026-10-11
50.189.192.0/18 Valid-2026-10-11
50.193.246.0/23 Valid-2026-10-11
50.199.16.0/20 Valid-2026-10-11
50.204.101.0/24 Valid-2026-10-11
50.205.217.0/24 Valid-2026-10-11
50.210.0.0/20 Valid-2026-10-11
50.211.32.0/19 Valid-2026-10-11
50.215.32.0/19 Valid-2026-10-11
50.216.229.0/24 Valid-2026-10-11
50.217.1.0/24 Valid-2026-10-11
50.217.207.0/24 Valid-2026-10-11
50.218.47.0/24 Valid-2026-10-11
50.219.12.0/22 Valid-2026-10-11
50.228.113.0/24 Valid-2026-10-11
50.229.113.0/24 Valid-2026-10-11
50.229.114.0/24 Valid-2026-10-11
50.235.34.0/24 Valid-2026-10-11
50.240.80.0/20 Valid-2026-10-11
50.242.32.0/19 Valid-2026-10-11
50.245.224.0/19 Valid-2026-10-11
50.251.112.0/20 Valid-2026-10-11
50.253.208.0/20 Valid-2026-10-11
64.139.66.0/24 Valid-2026-10-11
64.139.70.0/24 Valid-2026-10-11
64.139.79.0/24 Valid-2026-10-11
64.139.90.0/24 Valid-2026-10-11
66.208.224.0/23 Valid-2026-10-11
66.208.230.0/24 Valid-2026-10-11
66.208.234.0/24 Valid-2026-10-11
67.163.96.0/19 ValidOther IRR2026-10-11
67.166.160.0/19 ValidOther IRR2026-10-11
67.172.192.0/19 ValidOther IRR2026-10-11
67.174.64.0/20 Valid-2026-10-11
67.187.0.0/19 ValidOther IRR2026-10-11
68.85.70.0/23 Valid-2026-10-11
68.85.214.0/24 Valid-2026-10-11
68.85.226.0/24 ValidOther IRR2026-10-11
68.86.14.0/24 ValidOther IRR2026-10-11
68.86.24.0/24 ValidOther IRR2026-10-11
68.86.124.0/22 ValidOther IRR2026-10-11
68.86.172.0/22 ValidOther IRR2026-10-11
68.86.200.0/24 Valid-2026-10-11
68.87.3.0/24 Valid-2026-10-11
69.139.165.0/24 Valid-2026-10-11
69.139.186.0/24 Valid-2026-10-11
69.139.206.0/24 Valid-2026-10-11
69.139.223.0/24 Valid-2026-10-11
69.241.48.0/23 Valid-2026-10-11
69.241.85.0/24 Valid-2026-10-11
69.243.208.0/20 Valid-2026-10-11
69.244.224.0/20 Valid-2026-10-11
69.252.18.0/23 Valid-2026-10-11
70.88.24.0/23 Valid-2026-10-11
70.88.164.0/24 Valid-2026-10-11
70.88.168.0/23 Valid-2026-10-11
70.88.184.0/21 Valid-2026-10-11
70.89.232.0/21 Valid-2026-10-11
70.91.162.0/24 Valid-2026-10-11
71.24.32.0/19 Valid-2026-10-11
71.56.160.0/19 ValidOther IRR2026-10-11
71.57.192.0/19 Valid-2026-10-11
71.62.0.0/16 ValidOther IRR2026-10-11
71.63.0.0/17 Valid-2026-10-11
71.197.0.0/20 ValidOther IRR2026-10-11
71.206.128.0/18 ValidOther IRR2026-10-11
71.207.128.0/19 ValidOther IRR2026-10-11
74.92.186.0/23 ValidOther IRR2026-10-11
74.92.255.0/24 ValidOther IRR2026-10-11
74.93.116.0/22 ValidOther IRR2026-10-11
74.94.208.0/21 ValidOther IRR2026-10-11
74.95.96.0/22 ValidOther IRR2026-10-11
75.75.0.0/18 Valid-2026-10-11
75.75.64.0/21 Valid-2026-10-11
75.75.80.0/20 Valid-2026-10-11
75.75.96.0/19 Valid-2026-10-11
75.144.34.0/23 ValidOther IRR2026-10-11
75.145.196.0/22 Valid-2026-10-11
75.145.204.0/22 Valid-2026-10-11
75.145.240.0/21 Valid-2026-10-11
75.146.16.0/20 ValidOther IRR2026-10-11
75.146.87.0/24 Valid-2026-10-11
75.150.48.0/20 Valid-2026-10-11
76.26.64.0/19 Valid-2026-10-11
76.27.160.0/19 Valid-2026-10-11
76.104.0.0/17 Valid-2026-10-11
76.111.176.0/20 Valid-2026-10-11
76.120.192.0/18 Valid-2026-10-11