AS10255Sinister and Solitary
United StatesRegistryARINAs of 12th November 2026, AS10255 (Sinister and Solitary), a network registered in the United States with ARIN, originates 7 IPv4 prefixes covering 2.6k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 23,482nd-largest of the 80,794 networks we see originating IPv4, and the 5,888th-largest of 18,768 in the United States. It is seen behind 1 upstream network, most often AS2734 (CoreSite), and in front of 2 downstream networks. 22% of its announcements have 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 AS10255 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS10255 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
6
adjacent networks
- Upstreams
- 117%
- Peers
- 350%
- Downstreams
- 233%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS2734CoreSite | US | Peer | 763 | 142 |
Prefixes
The largest blocks AS10255 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 199.204.152.0/22 | 1k | 78/78 |
| 192.31.227.0/24 | 256 | 78/78 |
| 198.49.250.0/24 | 256 | 78/78 |
| 199.74.249.0/24 | 256 | 78/78 |
| 199.201.145.0/24 | 256 | 78/78 |
| 204.69.206.0/24 | 256 | 78/78 |
| 204.107.200.0/24 | 256 | 78/78 |
| 2620:131:f000::/40 | 16.8M × /64 | 64/64 |
| 2605:6c00:9::/48 | 65.5k × /64 | 64/64 |
Routing health
How AS10255'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
- Valid22.2%2
- Invalid0.0%0
- No ROA77.8%7
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
- /4865.5k × /6450.0%1
Recent changes
Announcements that started or stopped since 13th Oct 2026.
No announcement by AS10255 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.