AS33363Charter Communications, Inc
United StatesRegistryARINTypeEyeballAs of 10th November 2026, AS33363 (Charter Communications, Inc), an access network registered in the United States with ARIN, originates 415 IPv4 prefixes covering 5.9M addresses and 56 IPv6 prefixes. By IPv4 address space that makes it the 121st-largest of the 80,733 networks we see originating IPv4, and the 38th-largest of 18,751 in the United States. It is seen behind 1 upstream network, most often AS7843 (Spectrum (Charter)), and in front of 68 downstream networks. 85% of its announcements have a valid RPKI ROA; 64 are RPKI-invalid. 85% 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 AS33363 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS33363 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
138
adjacent networks
- Upstreams
- 11%
- Peers
- 6950%
- Downstreams
- 6849%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS7843Spectrum (Charter) | US | Peer | 39,454 | 139 |
Prefixes
All 471The largest blocks AS33363 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 35.136.0.0/13 | 524k | 75/76 |
| 72.184.0.0/14 | 262k | 76/76 |
| 97.100.0.0/14 | 262k | 76/76 |
| 108.188.0.0/14 | 262k | 76/76 |
| 173.168.0.0/14 | 262k | 76/76 |
| 50.88.0.0/15 | 131k | 76/76 |
| 65.32.0.0/15 | 131k | 76/76 |
| 68.204.0.0/15 | 131k | 76/76 |
| 70.126.0.0/15 | 131k | 76/76 |
| 72.188.0.0/15 | 131k | 76/76 |
Routing health
How AS33363'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
- Valid84.7%399
- Invalid13.6%64
- No ROA1.7%8
Propagation
- Globally propagated90% of full-feed peers or more84.9%400
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%15.1%71
Prefix sizes
IPv4 — 415 prefixes
IPv6 — 56 prefixes
- /318.6B × /641.8%1
- /324.3B × /6428.6%16
- /36268M × /645.4%3
- /4016.8M × /6412.5%7
- /441M × /647.1%4
- /4865.5k × /6444.6%25
Recent changes
Announcements that started or stopped since 12th Oct 2026.
- Announced35.143.176.0/217th Nov 2026
- Announced108.190.180.0/236th Nov 2026
- Announced72.184.200.0/216th Nov 2026
- Announced108.191.152.0/235th Nov 2026
- Withdrawn104.137.128.0/195th Nov 2026
- Withdrawn107.144.192.0/185th Nov 2026
- Withdrawn107.146.192.0/185th Nov 2026
- Withdrawn144.129.32.0/205th Nov 2026
- Withdrawn144.129.48.0/225th Nov 2026
- Withdrawn144.129.52.0/225th Nov 2026
- Withdrawn173.198.96.0/205th Nov 2026
- Withdrawn174.134.0.0/165th Nov 2026
18 announced and 51 withdrawn in all; the most recent are shown.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.