subnet.im

AS137899I LAYER LIMITED

Hong Kong SAR ChinaRegistryAPNIC

As of 11th November 2026, AS137899 (I LAYER LIMITED), a network registered in Hong Kong SAR China with APNIC, originates 45 IPv4 prefixes covering 27.1k addresses. By IPv4 address space that makes it the 6,067th-largest of the 80,747 networks we see originating IPv4, and the 87th-largest of 760 in Hong Kong SAR China. It is seen behind 1 upstream network, most often AS40779 (VoltNet inc). 67% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 82% of its routes reach at least 90% of full-feed peers, and 8 prefixes are also originated by another network.

At a glance

IPv4 prefixes

45

IPv6 prefixes

0

IPv4 addresses

27.1k

IPv6 /64s

0

Upstream graph

The networks AS137899 is seen behind, one and two hops out, drawn from real AS paths.

AS137899Toward the internet core
Upstream graph for AS137899: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137899I LAYER LIMITEDThis networkAS40779VoltNet incAS2914NTT America, Inc.AS18013ASLINE LIMITED

Networks observed one and two hops upstream of AS137899 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.

Upstreams of AS137899
NetworkCountryRelationshipPathsVantage pts
AS40779VoltNet incUSPeer3,19276

Prefixes

All 45

The largest blocks AS137899 originates, widest first.

Largest prefixes originated by AS137899
PrefixAddressesVisibility
154.219.96.0/212k68/76
154.219.104.0/212k68/76
154.219.112.0/221k74/76
154.219.116.0/221k74/76
156.233.232.0/221k44/76
206.187.200.0/221k74/76
206.187.204.0/221k74/76
206.187.208.0/221k74/76
206.187.212.0/221k74/76
206.187.216.0/221k50/76

Routing health

How AS137899'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

  • Valid66.7%30
  • Invalid0.0%0
  • No ROA33.3%15

Propagation

  • Globally propagated90% of full-feed peers or more82.2%37
  • Partially propagated40% to 90%17.8%8
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 45 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

46 announced and 1 withdrawn in all; the most recent are shown.

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