subnet.im

AS15623Cyberlink AG

SwitzerlandRegistryRIPE NCC

As of 24th October 2026, AS15623 (Cyberlink AG), a network registered in Switzerland with RIPE NCC, originates 36 IPv4 prefixes covering 101k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 2,362nd-largest of the 79,664 networks we see originating IPv4, and the 26th-largest of 739 in Switzerland. It is seen behind 15 upstream networks, most often AS4455 (IX Reach Ltd) and AS3356 (Lumen (Level 3)), and in front of 21 downstream networks. 60% 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

36

IPv6 prefixes

6

IPv4 addresses

101k

IPv6 /64s

112B

Upstream graph

The networks AS15623 is seen behind, one and two hops out, drawn from real AS paths.

AS15623Toward the internet core
Upstream graph for AS15623: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS15623Cyberlink AGThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3303Swisscom (Schweiz…AS3356Lumen (Level 3)AS4455IX Reach LtdAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS25091IP-Max SAAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS5511Orange S.A.

Networks observed one and two hops upstream of AS15623 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

281

adjacent networks

Upstreams
155%
Peers
24587%
Downstreams
217%

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

Upstreams of AS15623
NetworkCountryRelationshipPathsVantage pts
AS4455IX Reach LtdGBPeer1,48744
AS3356Lumen (Level 3)USPeer97723
AS1299Arelion (fka. Telia Carrier)SEPeer71529
AS174Cogent Communications, LLCUSPeer47919
AS3303Swisscom (Schweiz) AGCHPeer27211
AS6730Sunrise GmbHCHPeer2317
AS6939Hurricane Electric LLCUSPeer1457
AS43531BSO Network Solutions SASFRPeer1213
AS13030Init7 (Switzerland) Ltd.CHPeer1194
AS8298IPng Networks GmbHCHPeer652

Prefixes

All 42

The largest blocks AS15623 originates, widest first.

Largest prefixes originated by AS15623
PrefixAddressesVisibility
62.12.128.0/1732.8k75/76
195.144.160.0/198.2k75/76
195.226.0.0/198.2k75/76
212.45.192.0/198.2k75/76
212.55.192.0/198.2k75/76
213.158.128.0/198.2k75/76
213.189.128.0/198.2k75/76
217.14.64.0/204.1k75/76
217.75.16.0/212k75/76
45.83.68.0/221k75/76

Routing health

How AS15623'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

  • Valid59.5%25
  • Invalid0.0%0
  • No ROA40.5%17

Propagation

  • Globally propagated90% of full-feed peers or more100.0%42
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 36 prefixes

IPv6 — 6 prefixes

  • /2934.4B × /6450.0%3
  • /324.3B × /6433.3%2
  • /4865.5k × /6416.7%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS15623 started or stopped in this period.

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