AS21508 Comcast Cable Communications, LLC
IPv4 addresses
70,400
IPv6 /48 networks
61
RPKI
71 valid7 no ROA
Peers and downstreams
51
Holder
- AS name
- COMCAST-21508
- Description
- Comcast Cable Communications, LLC
- Organisation
- Comcast Cable Communications, LLC
- Abuse contact
- Not published
- Assigned
- 2001-05-15
- Registered
- 2001-05-16
- Record last changed
- 2021-01-25 20:20 UTC
2001:559:220::/482001:559:243::/482001:559:280::/482001:559:37d::/482001:559:3ac::/482001:559:3b9::/482001:559:3c8::/482001:559:40a::/482001:559:49a::/482001:559:49b::/482001:559:53c::/482001:559:5c9::/482001:559:5db::/482001:559:72b::/482001:559:73c::/482001:559:788::/482001:559:78a::/482001:559:79d::/482001:559:79e::/482001:559:7a7::/482001:559:7db::/482001:559:804c::/482001:559:81bf::/482001:559:81d7::/482001:559:81d8::/482001:559:8201::/482001:559:82fd::/482001:559:833e::/482001:559:8416::/482001:559:841c::/482001:559:8445::/482001:559:8535::/482001:559:85c1::/482001:559:85ff::/482001:559:8604::/482001:559:871a::/482001:559:875f::/482001:559:8773::/482001:559:87b2::/482001:559:8a::/482001:559:c0::/482001:559:c071::/482001:559:c0f6::/482001:559:c0f7::/482001:559:c10a::/482001:559:c174::/482001:559:c1a5::/482001:559:c1ca::/482001:559:c28f::/482001:559:c290::/482001:559:c2a7::/482001:559:c344::/482001:559:c3e9::/482001:559:c458::/482001:559:c45f::/482001:559:c460::/482001:559:c4db::/482001:559:c4f6::/482001:559:c515::/482001:559:c538::/482001:559:f7::/48
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None seen.
Upstream graph
Upstreams and their upstreams, from BGP pathsNetwork health
Grade B · 78/100| partly | Prefixes covered by valid ROAs 71 of 78 announced prefixes are RPKI valid, 7 have no ROA. |
23/25 |
| pass | No RPKI invalid announcements None of the announcements is RPKI invalid. |
10/10 |
| pass | Announces IPv6 61 IPv6 prefixes. |
15/15 |
| partly | More than one upstream 1 upstream seen in BGP. |
5/10 |
| pass | Working abuse contact abuse@comcast.net is published. |
15/15 |
| fail | Publishes a geofeed No geofeed found. Without one, location databases have to guess. |
0/10 |
| pass | No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger. |
10/10 |
| fail | Registry record maintained Last changed 2021-01-25. |
0/5 |
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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Markdown
[](https://ip-fd.net/asn/21508)
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Routing changes
Last 30 daysNo changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.
WHOIS
aut-num: AS21508 as-name: COMCAST-21508 handle: AS21508 registrant: CCCS (Comcast Cable Communications, LLC) abuse: NAPO-ARIN (Network Abuse and Policy Observance) <abuse@comcast.net> routing: ROUTI25-ARIN (Routing) <routing@comcast.com> technical,administrative:IC161-ARIN (Comcast Cable Communications Inc) <CNIPEO-Ip-registration@cable.comcast.com> last changed: 2021-01-25T15:20:02-05:00 registration: 2001-05-16T00:00:00-04:00 source: ARIN (RDAP)