AS21508
Comcast Cable Communications, LLC — comcast.net
Summary
Country |
![]() |
Organization | Comcast Cable Communications, LLC |
Domain | comcast.net |
Number of IPv4 | 72,448 |
Number of IPv6 | 8.2207× 1025 |
AS Type | Business |
Registry | ARIN |
Allocated | May 16, 2001 (about 24 years ago) |
Updated | January 25, 2021 (about 4 years ago) |
IP Ranges
AS21508 announces 22 IPv4 ranges and 68 IPv6 ranges.
That's a total of 72,448 IPv4 addresses and 8.2207× 1025 IPv6 addresses.
Prefix | Organization | Size | Registry | Status |
---|---|---|---|---|
50.204.101.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.205.217.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.216.229.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.217.1.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.217.207.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.218.47.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.219.12.0/22 |
![]() |
1,024 | ARIN | ALLOCATION |
50.220.111.0/24 |
![]() |
256 | ARIN | REASSIGNMENT |
50.227.24.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.228.113.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.229.113.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.229.114.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.229.232.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.229.233.0/24 |
![]() |
256 | ARIN | ALLOCATION |
50.235.34.0/24 |
![]() |
256 | ARIN | ALLOCATION |
141.104.0.0/16 |
![]() |
65,536 | ARIN | ALLOCATION |
157.240.147.0/24 |
![]() |
256 | ARIN | ALLOCATION |
157.240.148.0/24 |
![]() |
256 | ARIN | ALLOCATION |
173.242.174.0/24 |
![]() |
256 | ARIN | ALLOCATION |
198.90.112.0/22 |
![]() |
1,024 | ARIN | ALLOCATION |
204.194.47.0/24 |
![]() |
256 | ARIN | ALLOCATION |
205.223.19.0/24 |
![]() |
256 | ARIN | ALLOCATION |
Prefix | Organization | Size | Registry | Status |
---|---|---|---|---|
2001:559:8a::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c0::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:f7::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:220::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:243::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:280::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:37d::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:3ac::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:3b9::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:3c8::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:40a::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:49a::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:49b::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:4b6::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:53c::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:5c9::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:5db::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:720::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:72b::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:73c::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:788::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:78a::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:79d::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:79e::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:7a7::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:7db::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:804c::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:81bf::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:81d7::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:81d8::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:8201::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:82fd::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:833e::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:8416::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:841c::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:8445::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:84a7::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:8535::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:85c1::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:85ff::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:8604::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:871a::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:875f::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:8773::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:87b2::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c071::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c0f6::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c0f7::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c0fa::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c10a::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c174::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c1a5::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c1ca::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c28f::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c290::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c2a7::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c344::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c3e9::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c458::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c45f::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c460::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c495::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c4c8::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c4c9::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c4db::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c4f6::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c515::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
2001:559:c538::/48 |
![]() |
1.2089× 1024 | ARIN | ALLOCATION |
Peers
AS21508 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.
Upstreams
AS21508 connects to the global Internet via at least 1 upstream provider. In this setup, AS21508 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS21508 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS21508's role in extending Internet access beyond its own infrastructure.