AS20231Charter Communications Inc
United StatesRegistryARINAs of 10th November 2026, AS20231 (Charter Communications Inc), a network registered in the United States with ARIN, originates 7 IPv4 prefixes covering 22k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 6,772nd-largest of the 80,733 networks we see originating IPv4, and the 2,249th-largest of 18,751 in the United States. It is seen behind 2 upstream networks, most often AS20115 (Spectrum (Charter)) and AS11427 (Charter Communications Inc), and in front of 22 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS20231 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS20231 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
49
adjacent networks
- Upstreams
- 24%
- Peers
- 2551%
- Downstreams
- 2245%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS20115Spectrum (Charter) | US | Peer | 1,000 | 139 |
| AS11427Charter Communications Inc | US | Peer | 810 | 110 |
Prefixes
The largest blocks AS20231 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 72.129.224.0/19 | 8.2k | 76/76 |
| 24.166.176.0/20 | 4.1k | 76/76 |
| 72.133.224.0/20 | 4.1k | 76/76 |
| 24.166.168.0/21 | 2k | 76/76 |
| 192.62.240.0/21 | 2k | 76/76 |
| 24.166.164.0/22 | 1k | 76/76 |
| 76.58.46.0/23 | 512 | 76/76 |
| 2602:107:4000::/40 | 16.8M × /64 | 63/63 |
| 2602:107:e7c0::/43 | 2.1M × /64 | 63/63 |
Routing health
How AS20231's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid100.0%9
- Invalid0.0%0
- No ROA0.0%0
Propagation
- Globally propagated90% of full-feed peers or more100.0%9
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 7 prefixes
IPv6 — 2 prefixes
- /4016.8M × /6450.0%1
- /432.1M × /6450.0%1
Recent changes
Announcements that started or stopped since 12th Oct 2026.
No announcement by AS20231 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.