AS21508 
Comcast - Richmond
Updated 21.10.2026 17:16 UTC
AS Info
- Organization
- Comcast Cable Communications, LLC
- Country
- United States
- Registry
- ORG-KB94-RIPE
- Last seen in BGP
- 21.10.2026 17:05 UTC
RPKI
280 ROA
Valid 71
Invalid 0
No ROA 7
Prefix locations
-
United States
78
External links
Neighbors as seen from AS208972, thicker lines carry more routes.
UpstreamsAS21508Downstreams
| # | AS | Name | Relation | Routes | Share |
|---|---|---|---|---|---|
| 1 | AS7922 | Comcast | Upstream | 123 |
| # | AS | Name | Relation | Routes | Share |
|---|---|---|---|---|---|
| 1 | AS40641 | MGW Telephone Company, Inc. | Downstream | 7 | |
| 2 | AS13335 | Cloudflare | Downstream | 6 | |
| 3 | AS401426 | St. Mary's Medical Center, Inc. | Downstream | 3 | |
| 4 | AS15297 | EPLUS, Inc. | Downstream | 3 | |
| 5 | AS400114 | Apogee Telecom Inc. | Downstream | 2 | |
| 6 | AS396083 | Framatome Inc. | Downstream | 2 | |
| 7 | AS394058 | Telos Corporation | Downstream | 2 | |
| 8 | AS54113 | Fastly, Inc. | Downstream | 2 | |
| 9 | AS15173 | Newmarket Corporation | Downstream | 2 | |
| 10 | AS2134 |  Santander Global Technology and Operations, S.L. | Downstream | 2 | |
| 11 | AS402549 | Terraservers | Downstream | 1 | |
| 12 | AS399938 | | Downstream | 1 | |
| 13 | AS399099 | petersburg city public schools | Downstream | 1 | |
| 14 | AS395772 | Augusta Health Care, Inc | Downstream | 1 | |
| 15 | AS54883 | City of Richmond, Virginia | Downstream | 1 | |
| 16 | AS54219 | SCHAWK-ASN | Downstream | 1 | |
| 17 | AS36364 | Mary Washington Hospital, Inc. | Downstream | 1 | |
| 18 | AS36244 | Shenandoah Valley Electric Cooperative | Downstream | 1 | |
| 19 | AS36040 | Google LLC AS36040 | Downstream | 1 | |
| 20 | AS32540 | HP Hood | Downstream | 1 | |
| 21 | AS19923 | Shenandoah University | Downstream | 1 | |
| 22 | AS14583 | Virginia Information Technologies Agency (VITA) | Downstream | 1 | |
| 23 | AS11739 | Digital Forest | Downstream | 1 |
None seen in the routing table.
| # | AS | Name | Relation | Routes | Share |
|---|---|---|---|---|---|
| 1 | AS7922 | Comcast | Upstream | 123 | |
| 2 | AS40641 | MGW Telephone Company, Inc. | Downstream | 7 | |
| 3 | AS13335 | Cloudflare | Downstream | 6 | |
| 4 | AS401426 | St. Mary's Medical Center, Inc. | Downstream | 3 | |
| 5 | AS15297 | EPLUS, Inc. | Downstream | 3 | |
| 6 | AS400114 | Apogee Telecom Inc. | Downstream | 2 | |
| 7 | AS396083 | Framatome Inc. | Downstream | 2 | |
| 8 | AS394058 | Telos Corporation | Downstream | 2 | |
| 9 | AS54113 | Fastly, Inc. | Downstream | 2 | |
| 10 | AS15173 | Newmarket Corporation | Downstream | 2 | |
| 11 | AS2134 | Santander Global Technology and Operations, S.L. | Downstream | 2 | |
| 12 | AS402549 | Terraservers | Downstream | 1 | |
| 13 | AS399938 | | Downstream | 1 | |
| 14 | AS399099 | petersburg city public schools | Downstream | 1 | |
| 15 | AS395772 | Augusta Health Care, Inc | Downstream | 1 | |
| 16 | AS394276 | TurnAround Factor, Inc. | 1 | ||
| 17 | AS54883 | City of Richmond, Virginia | Downstream | 1 | |
| 18 | AS54219 | SCHAWK-ASN | Downstream | 1 | |
| 19 | AS36364 | Mary Washington Hospital, Inc. | Downstream | 1 | |
| 20 | AS36244 | Shenandoah Valley Electric Cooperative | Downstream | 1 | |
| 21 | AS36040 | Google LLC AS36040 | Downstream | 1 | |
| 22 | AS32540 | HP Hood | Downstream | 1 | |
| 23 | AS19923 | Shenandoah University | Downstream | 1 | |
| 24 | AS14583 | Virginia Information Technologies Agency (VITA) | Downstream | 1 | |
| 25 | AS11739 | Digital Forest | Downstream | 1 |
| Prefix | Description | Location | RPKI | Paths |
|---|---|---|---|---|
| 50.204.101.0/24 | Houston | RPKI valid | 1 | |
| 50.205.217.0/24 | Richmond | RPKI valid | 1 | |
| 50.216.229.0/24 | Braintree | RPKI valid | 1 | |
| 50.217.1.0/24 | Absecon | RPKI valid | 1 | |
| 50.217.207.0/24 | | RPKI valid | 1 | |
| 50.218.47.0/24 | Richmond | RPKI valid | 1 | |
| 50.228.113.0/24 | Philadelphia | RPKI valid | 1 | |
| 50.229.113.0/24 | Bear | RPKI valid | 1 | |
| 50.229.114.0/24 | Bear | RPKI valid | 1 | |
| 50.235.34.0/24 | Johnstown | RPKI valid | 1 | |
| 141.104.0.0/16 | | No ROA | 1 | |
| 157.240.147.0/24 | | No ROA | 1 | |
| 157.240.148.0/24 | | No ROA | 1 | |
| 173.242.174.0/24 | Henrico | No ROA | 1 | |
| 198.90.112.0/22 | Charlottesville | No ROA | 1 | |
| 204.194.47.0/24 | | No ROA | 1 | |
| 205.223.19.0/24 | | No ROA | 1 |
| Prefix | Description | Location | RPKI | Paths |
|---|---|---|---|---|
| 2001:559:8a::/48 | Union City | RPKI valid | 1 | |
| 2001:559:c0::/48 | Union City | RPKI valid | 1 | |
| 2001:559:f7::/48 | Union City | RPKI valid | 1 | |
| 2001:559:220::/48 | Union City | RPKI valid | 1 | |
| 2001:559:243::/48 | Union City | RPKI valid | 1 | |
| 2001:559:280::/48 | Union City | RPKI valid | 1 | |
| 2001:559:37d::/48 | Union City | RPKI valid | 1 | |
| 2001:559:3ac::/48 | Union City | RPKI valid | 1 | |
| 2001:559:3b9::/48 | Union City | RPKI valid | 1 | |
| 2001:559:3c8::/48 | Union City | RPKI valid | 1 | |
| 2001:559:40a::/48 | | RPKI valid | 1 | |
| 2001:559:49a::/48 | | RPKI valid | 1 | |
| 2001:559:49b::/48 | | RPKI valid | 1 | |
| 2001:559:53c::/48 | | RPKI valid | 1 | |
| 2001:559:5c9::/48 | | RPKI valid | 1 | |
| 2001:559:5db::/48 | | RPKI valid | 1 | |
| 2001:559:72b::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:73c::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:788::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:78a::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:79d::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:79e::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:7a7::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:7db::/48 | District Heights | RPKI valid | 1 | |
| 2001:559:804c::/48 | | RPKI valid | 1 | |
| 2001:559:81bf::/48 | Houston | RPKI valid | 1 | |
| 2001:559:81d7::/48 | Houston | RPKI valid | 1 | |
| 2001:559:81d8::/48 | Houston | RPKI valid | 1 | |
| 2001:559:8201::/48 | | RPKI valid | 1 | |
| 2001:559:82fd::/48 | | RPKI valid | 1 | |
| 2001:559:833e::/48 | | RPKI valid | 1 | |
| 2001:559:8416::/48 | | RPKI valid | 1 | |
| 2001:559:841c::/48 | | RPKI valid | 1 | |
| 2001:559:8445::/48 | | RPKI valid | 1 | |
| 2001:559:8535::/48 | | RPKI valid | 1 | |
| 2001:559:85c1::/48 | | RPKI valid | 1 | |
| 2001:559:85ff::/48 | | RPKI valid | 1 | |
| 2001:559:8604::/48 | | RPKI valid | 1 | |
| 2001:559:871a::/48 | | RPKI valid | 1 | |
| 2001:559:875f::/48 | | RPKI valid | 1 | |
| 2001:559:8773::/48 | | RPKI valid | 1 | |
| 2001:559:87b2::/48 | | RPKI valid | 1 | |
| 2001:559:c071::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c0f6::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c0f7::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c10a::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c174::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c1a5::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c1ca::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c28f::/48 | Henrico | RPKI valid | 1 | |
| 2001:559:c290::/48 | Henrico | RPKI valid | 1 | |
| 2001:559:c2a7::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c344::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c3e9::/48 | Newark | RPKI valid | 1 | |
| 2001:559:c458::/48 | | RPKI valid | 1 | |
| 2001:559:c45f::/48 | | RPKI valid | 1 | |
| 2001:559:c460::/48 | | RPKI valid | 1 | |
| 2001:559:c4db::/48 | | RPKI valid | 1 | |
| 2001:559:c4f6::/48 | | RPKI valid | 1 | |
| 2001:559:c515::/48 | | RPKI valid | 1 | |
| 2001:559:c538::/48 | | RPKI valid | 1 |
| Prefix | Description | Withdrawn |
|---|---|---|
| 50.229.233.0/24 | 21.10.2026 12:21 | |
| 50.229.232.0/24 | 21.10.2026 12:21 | |
| 50.219.193.0/24 | 21.10.2026 12:21 | |
| 192.100.76.0/24 | 21.10.2026 12:21 | |
| 50.237.96.0/24 | 21.10.2026 12:21 | |
| 50.234.62.0/23 | 21.10.2026 12:21 | |
| 50.227.24.0/24 | 21.10.2026 12:21 | |
| 50.220.111.0/24 | 21.10.2026 12:21 | |
| 50.219.12.0/22 | 21.10.2026 12:21 |