AS8970Wroclaw Centre of Networking and Supercomputing
PolandRegistryRIPE NCCTypeEyeballAs of 11th November 2026, AS8970 (Wroclaw Centre of Networking and…), an access network registered in Poland with RIPE NCC, originates 1 IPv4 prefix covering 65.5k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 3,686th-largest of the 80,743 networks we see originating IPv4, and the 31st-largest of 2,109 in Poland. It is seen behind 4 upstream networks, most often AS8501 (Institute of Bioorganic Chemistry…) and AS196844 (Institute of Bioorganic Chemistry…), and in front of 4 downstream networks. Every one of its announcements has 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 AS8970 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS8970 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
- 425%
- Peers
- 850%
- Downstreams
- 425%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS8501Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | PL | Peer | 330 | 132 |
| AS196844Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | PL | Peer | 22 | 10 |
| AS15851Wroclaw Centre of Networking and Supercomputing | PL | Peer | 11 | 11 |
| AS5617Orange Polska Spolka Akcyjna | PL | Peer | 3 | 1 |
Prefixes
The largest blocks AS8970 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 156.17.0.0/16 | 65.5k | 75/76 |
| 2001:a48::/32 | 4.3B × /64 | 61/63 |
Routing health
How AS8970'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
- Valid100.0%2
- Invalid0.0%0
- No ROA0.0%0
Propagation
- Globally propagated90% of full-feed peers or more100.0%2
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 1 prefixes
IPv6 — 1 prefixes
- /324.3B × /64100.0%1
Recent changes
Announcements that started or stopped since 12th Oct 2026.
No announcement by AS8970 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.