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AS17561LARUS Limited

Hong Kong SAR ChinaRegistryAPNIC

As of 26th September 2026, AS17561 (LARUS Limited), a network registered in Hong Kong SAR China with APNIC, originates 1,687 IPv4 prefixes covering 436k addresses. By IPv4 address space that makes it the 775th-largest of the 79,516 networks we see originating IPv4, and the 15th-largest of 734 in Hong Kong SAR China. It is seen behind 36 upstream networks, most often AS17497 (Liasail Global Hongkong Limited) and AS263681 (IPTP NETWORKS S.A.C.). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 96% of its routes reach at least 90% of full-feed peers, and 12 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,687

IPv6 prefixes

0

IPv4 addresses

436k

IPv6 /64s

0

Upstream graph

The networks AS17561 is seen behind, one and two hops out, drawn from real AS paths.

AS17561Toward the internet core
Upstream graph for AS17561: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS17561LARUS LimitedThis networkAS17497Liasail Global Ho…AS35916MULTACOM CORPORAT…AS41095IPTP LTDAS61461Airtek Solutions …AS263681IPTP NETWORKS S.A…AS2914NTT America, Inc.AS3491PCCW Global (HK) …AS6939Hurricane Electri…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS17561 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

180

adjacent networks

Upstreams
3620%
Peers
14480%
Downstreams
00%

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

Upstreams of AS17561
NetworkCountryRelationshipPathsVantage pts
AS17497Liasail Global Hongkong LimitedHKPeer86,47581
AS263681IPTP NETWORKS S.A.C.PEPeer22,13281
AS41095IPTP LTDGBPeer9,09781
AS61461Airtek Solutions C.A.VEPeer7,60381
AS35916MULTACOM CORPORATIONUSPeer2,40381
AS51601IPTP LTDGBPeer89781
AS6939Hurricane Electric LLCUSPeer5585
AS18106Viewqwest Pte LtdSGPeer2902
AS38880Micron21 Datacentre Pty LtdAUPeer2902
AS14537Continent 8 LLCUSPeer2072

Prefixes

All 1,687

The largest blocks AS17561 originates, widest first.

Largest prefixes originated by AS17561
PrefixAddressesVisibility
154.87.184.0/221k81/81
154.87.248.0/221k81/81
156.229.168.0/221k81/81
156.230.128.0/221k81/81
156.244.128.0/221k81/81
156.252.64.0/221k81/81
45.195.242.0/2425680/81
45.196.70.0/2425681/81
45.196.71.0/2425681/81
45.196.80.0/2425681/81

Routing health

How AS17561'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%1,687
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more96.3%1,625
  • Partially propagated40% to 90%3.6%61
  • Seen by few peersUnder 40%<0.1%1

Prefix sizes

IPv4 — 1,687 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

180 announced and 1,378 withdrawn in all; the most recent are shown.

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