AS203363Kuroit Limited
United KingdomRegistryRIPE NCCTypeContentAs of 26th September 2026, AS203363 (Kuroit Limited), a content network registered in the United Kingdom with RIPE NCC, originates 9 IPv4 prefixes covering 2.3k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 24,092nd-largest of the 79,516 networks we see originating IPv4, and the 722nd-largest of 2,074 in the United Kingdom. It is seen behind 3 upstream networks, most often AS3170 (VeloxServ Communications Ltd) and AS213438 (ColocaTel Inc.), and in front of 1 downstream network. 91% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 91% 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 AS203363 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS203363 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
8
adjacent networks
- Upstreams
- 338%
- Peers
- 450%
- Downstreams
- 113%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3170VeloxServ Communications Ltd | GB | Peer | 836 | 144 |
| AS213438ColocaTel Inc. |  SC | Peer | 81 | 81 |
| AS203758EUGAMEHOST LTD | GB | Peer | 81 | 81 |
Prefixes
The largest blocks AS203363 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 2.58.203.0/24 | 256 | 81/81 |
| 5.83.214.0/24 | 256 | 81/81 |
| 45.67.85.0/24 | 256 | 81/81 |
| 45.80.193.0/24 | 256 | 81/81 |
| 46.37.124.0/24 | 256 | 81/81 |
| 91.205.158.0/24 | 256 | 81/81 |
| 109.205.214.0/24 | 256 | 81/81 |
| 147.90.210.0/24 | 256 | 81/81 |
| 178.93.148.0/24 | 256 | 81/81 |
| 2401:8360:a3::/48 | 65.5k × /64 | 63/64 |
Routing health
How AS203363'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
- Valid90.9%10
- Invalid9.1%1
- No ROA0.0%0
Propagation
- Globally propagated90% of full-feed peers or more90.9%10
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%9.1%1
Prefix sizes
IPv4 — 9 prefixes
IPv6 — 2 prefixes
- /4865.5k × /64100.0%2
Recent changes
Announcements that started or stopped since 27th Aug 2026.
No announcement by AS203363 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.