AS21508 Comcast Cable Communications LLC
General Info - AS21508
70,144
73.74 Septillion
IP Address Ranges
| Netblock | From IP | To IP | Number of IPs | |
|---|---|---|---|---|
| 50.204.101.0/24 | 50.204.101.0 | 50.204.101.255 | 256 | |
| 50.205.217.0/24 | 50.205.217.0 | 50.205.217.255 | 256 | |
| 50.216.229.0/24 | 50.216.229.0 | 50.216.229.255 | 256 | |
| 50.217.1.0/24 | 50.217.1.0 | 50.217.1.255 | 256 | |
| 50.217.207.0/24 | 50.217.207.0 | 50.217.207.255 | 256 | |
| 50.218.47.0/24 | 50.218.47.0 | 50.218.47.255 | 256 | |
| 50.228.113.0/24 | 50.228.113.0 | 50.228.113.255 | 256 | |
| 50.229.113.0/24 | 50.229.113.0 | 50.229.113.255 | 256 | |
| 50.229.114.0/24 | 50.229.114.0 | 50.229.114.255 | 256 | |
| 50.235.34.0/24 | 50.235.34.0 | 50.235.34.255 | 256 | |
| 141.104.0.0/16 | 141.104.0.0 | 141.104.255.255 | 65,536 | |
| 157.240.148.0/24 | 157.240.148.0 | 157.240.148.255 | 256 | |
| 173.242.174.0/24 | 173.242.174.0 | 173.242.174.255 | 256 | |
| 198.90.112.0/22 | 198.90.112.0 | 198.90.115.255 | 1,024 | |
| 204.194.47.0/24 | 204.194.47.0 | 204.194.47.255 | 256 | |
| 205.223.19.0/24 | 205.223.19.0 | 205.223.19.255 | 256 |
| Netblock | From IP | To IP | Number of IPs | |
|---|---|---|---|---|
| 2001:559:8a::/48 | 2001:559:8a:: | 2001:559:8a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c0::/48 | 2001:559:c0:: | 2001:559:c0:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:f7::/48 | 2001:559:f7:: | 2001:559:f7:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:220::/48 | 2001:559:220:: | 2001:559:220:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:243::/48 | 2001:559:243:: | 2001:559:243:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:280::/48 | 2001:559:280:: | 2001:559:280:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:37d::/48 | 2001:559:37d:: | 2001:559:37d:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:3ac::/48 | 2001:559:3ac:: | 2001:559:3ac:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:3b9::/48 | 2001:559:3b9:: | 2001:559:3b9:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:3c8::/48 | 2001:559:3c8:: | 2001:559:3c8:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:40a::/48 | 2001:559:40a:: | 2001:559:40a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:49a::/48 | 2001:559:49a:: | 2001:559:49a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:49b::/48 | 2001:559:49b:: | 2001:559:49b:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:53c::/48 | 2001:559:53c:: | 2001:559:53c:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:5c9::/48 | 2001:559:5c9:: | 2001:559:5c9:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:5db::/48 | 2001:559:5db:: | 2001:559:5db:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:72b::/48 | 2001:559:72b:: | 2001:559:72b:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:73c::/48 | 2001:559:73c:: | 2001:559:73c:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:788::/48 | 2001:559:788:: | 2001:559:788:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:78a::/48 | 2001:559:78a:: | 2001:559:78a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:79d::/48 | 2001:559:79d:: | 2001:559:79d:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:79e::/48 | 2001:559:79e:: | 2001:559:79e:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:7a7::/48 | 2001:559:7a7:: | 2001:559:7a7:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:7db::/48 | 2001:559:7db:: | 2001:559:7db:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:804c::/48 | 2001:559:804c:: | 2001:559:804c:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:81bf::/48 | 2001:559:81bf:: | 2001:559:81bf:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:81d7::/48 | 2001:559:81d7:: | 2001:559:81d7:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:81d8::/48 | 2001:559:81d8:: | 2001:559:81d8:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:8201::/48 | 2001:559:8201:: | 2001:559:8201:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:82fd::/48 | 2001:559:82fd:: | 2001:559:82fd:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:833e::/48 | 2001:559:833e:: | 2001:559:833e:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:8416::/48 | 2001:559:8416:: | 2001:559:8416:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:841c::/48 | 2001:559:841c:: | 2001:559:841c:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:8445::/48 | 2001:559:8445:: | 2001:559:8445:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:8535::/48 | 2001:559:8535:: | 2001:559:8535:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:85c1::/48 | 2001:559:85c1:: | 2001:559:85c1:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:85ff::/48 | 2001:559:85ff:: | 2001:559:85ff:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:8604::/48 | 2001:559:8604:: | 2001:559:8604:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:871a::/48 | 2001:559:871a:: | 2001:559:871a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:875f::/48 | 2001:559:875f:: | 2001:559:875f:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:8773::/48 | 2001:559:8773:: | 2001:559:8773:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:87b2::/48 | 2001:559:87b2:: | 2001:559:87b2:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c071::/48 | 2001:559:c071:: | 2001:559:c071:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c0f6::/48 | 2001:559:c0f6:: | 2001:559:c0f6:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c0f7::/48 | 2001:559:c0f7:: | 2001:559:c0f7:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c10a::/48 | 2001:559:c10a:: | 2001:559:c10a:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c174::/48 | 2001:559:c174:: | 2001:559:c174:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c1a5::/48 | 2001:559:c1a5:: | 2001:559:c1a5:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c1ca::/48 | 2001:559:c1ca:: | 2001:559:c1ca:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c28f::/48 | 2001:559:c28f:: | 2001:559:c28f:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c290::/48 | 2001:559:c290:: | 2001:559:c290:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c2a7::/48 | 2001:559:c2a7:: | 2001:559:c2a7:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c344::/48 | 2001:559:c344:: | 2001:559:c344:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c3e9::/48 | 2001:559:c3e9:: | 2001:559:c3e9:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c458::/48 | 2001:559:c458:: | 2001:559:c458:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c45f::/48 | 2001:559:c45f:: | 2001:559:c45f:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c460::/48 | 2001:559:c460:: | 2001:559:c460:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c4db::/48 | 2001:559:c4db:: | 2001:559:c4db:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c4f6::/48 | 2001:559:c4f6:: | 2001:559:c4f6:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c515::/48 | 2001:559:c515:: | 2001:559:c515:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion | |
| 2001:559:c538::/48 | 2001:559:c538:: | 2001:559:c538:ffff:ffff:ffff:ffff:ffff | 1.21 Septillion |
Upstreams
Downstreams
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- AS54751 Virginia Economic Development Partnership
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- AS395527 Virginia State University
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What is an Autonomous System (AS)?
An Autonomous System (AS) is a collection of connected networks that operate under a common administrative domain and share routing policies. Each AS is identified by a unique Autonomous System Number (ASN), which is used to exchange routing information with other ASs. AS can control how traffic flows through networks and then filter out unwanted traffic.
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