subnet.im

AS20904Cinia Oy (fka. Netplaza)

FinlandRegistryRIPE NCCTypeEyeball

As of 24th October 2026, AS20904 (Cinia Oy (fka. Netplaza)), an access network registered in Finland with RIPE NCC, originates 19 IPv4 prefixes covering 28.9k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 5,795th-largest of the 79,671 networks we see originating IPv4, and the 34th-largest of 281 in Finland. It is seen behind 7 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS174 (Cogent Communications, LLC), and in front of 15 downstream networks. 95% 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

19

IPv6 prefixes

3

IPv4 addresses

28.9k

IPv6 /64s

42.9B

Upstream graph

The networks AS20904 is seen behind, one and two hops out, drawn from real AS paths.

AS20904Toward the internet core
Upstream graph for AS20904: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20904Cinia Oy (fka. Ne…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6667Elisa OyjAS6939Hurricane Electri…AS49544i3D.net B.VAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS3356Lumen (Level 3)AS20130Depaul UniversityAS132337AxclusiveAS2914NTT America, Inc.

Networks observed one and two hops upstream of AS20904 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

49

adjacent networks

Upstreams
714%
Peers
2755%
Downstreams
1531%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS20904
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer2,50885
AS174Cogent Communications, LLCUSPeer1,12639
AS6939Hurricane Electric LLCUSPeer29913
AS6667Elisa OyjFIPeer924
AS49544i3D.net B.VNLPeer692
AS24940Hetzner Online GmbHDEPeer642
AS12552GlobalConnect (IP-Only)SEPeer591

Prefixes

The largest blocks AS20904 originates, widest first.

Largest prefixes originated by AS20904
PrefixAddressesVisibility
164.5.160.0/198.2k75/76
80.75.96.0/204.1k75/76
37.35.80.0/212k75/76
93.174.192.0/212k75/76
149.126.176.0/212k75/76
164.5.208.0/212k75/76
188.64.0.0/212k75/76
164.5.180.0/221k75/76
185.16.168.0/221k75/76
185.25.76.0/221k75/76

Routing health

How AS20904'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

  • Valid95.5%21
  • Invalid0.0%0
  • No ROA4.5%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%22
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 19 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6433.3%1
  • /324.3B × /6466.7%2

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS20904 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.