AS21508 Comcast Cable Communications, LLC 🇺🇸 US
Announcing 77 prefixes, seen at the RIS collectors.
IPv4 prefixes
16
70,144 (274 × /24)
IPv6 prefixes
61
61 × /48
Upstreams
1
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
50
transit customers observed
Customer cone
19,960
ASes reachable through it
Registry and operator data
- AS number
- AS21508
- Name
- Comcast Cable Communications, LLC
- Organisation
- Comcast - Richmond
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 2001-05-16
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Peering policy
- Restrictive
- PeeringDB
- net/10095
- Facilities
- 1
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS7922 Comcast Cable Communications, LLC | 🇺🇸 US | 27,928 | 426 | 4,342 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
No peers observed at the collectors.
Downstreams
Networks this one appears to provide transit to
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.