AS210542
As of 12th November 2026, AS210542, a network registered with RIPE NCC, originates 4 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 36,502nd-largest of the 80,772 networks we see originating IPv4. It is seen behind 1 upstream network, most often AS29752 (Zenlayer Inc). None of its announcements have a valid RPKI ROA; 4 are RPKI-invalid. 0% 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 AS210542 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS210542 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
2
adjacent networks
- Upstreams
- 150%
- Peers
- 150%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS29752Zenlayer Inc |  US | Peer | 4 | 1 |
Prefixes
The largest blocks AS210542 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 51.241.213.0/24 | 256 | 1/78 |
| 74.0.27.0/24 | 256 | 1/78 |
| 87.83.63.0/24 | 256 | 1/78 |
| 91.109.40.0/24 | 256 | 1/78 |
Routing health
How AS210542'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
- Invalid100.0%4
- No ROA0.0%0
Propagation
- Globally propagated90% of full-feed peers or more0.0%0
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%100.0%4
Prefix sizes
IPv4 — 4 prefixes
Recent changes
Announcements that started or stopped since 13th Oct 2026.
- Withdrawn31.57.202.0/2431st Oct 2026
- Announced31.57.202.0/2429th Oct 2026
- Announced51.241.213.0/2429th Oct 2026
- Announced74.0.27.0/2429th Oct 2026
- Announced87.83.63.0/2429th Oct 2026
- Announced91.109.40.0/2429th Oct 2026
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.