AS5555Sohonet Limited
United KingdomRegistryRIPE NCCAs of 24th October 2026, AS5555 (Sohonet Limited), a network registered in the United Kingdom with RIPE NCC, originates 32 IPv4 prefixes covering 47.6k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 4,566th-largest of the 79,642 networks we see originating IPv4, and the 105th-largest of 2,077 in the United Kingdom. It is seen behind 1 upstream network, most often AS16164 (Sohonet Limited), and in front of 7 downstream networks. None of its announcements have a valid RPKI ROA. 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 AS5555 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS5555 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
16
adjacent networks
- Upstreams
- 16%
- Peers
- 850%
- Downstreams
- 744%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS16164Sohonet Limited | GB | Peer | 5,273 | 138 |
Prefixes
All 33The largest blocks AS5555 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 46.248.224.0/19 | 8.2k | 76/76 |
| 89.16.224.0/19 | 8.2k | 76/76 |
| 193.203.64.0/19 | 8.2k | 76/76 |
| 67.224.96.0/20 | 4.1k | 76/76 |
| 173.0.160.0/20 | 4.1k | 76/76 |
| 67.224.96.0/21 | 2k | 76/76 |
| 208.65.208.0/21 | 2k | 76/76 |
| 74.119.180.0/22 | 1k | 76/76 |
| 185.116.56.0/22 | 1k | 76/76 |
| 208.65.208.0/22 | 1k | 76/76 |
Routing health
How AS5555'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
- Valid0.0%0
- Invalid0.0%0
- No ROA100.0%33
Propagation
- Globally propagated90% of full-feed peers or more100.0%33
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 32 prefixes
IPv6 — 1 prefixes
- /324.3B × /64100.0%1
Recent changes
Announcements that started or stopped since 24th Sept 2026.
- Announced205.175.211.0/2422nd Oct 2026
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.