subnet.im

AS137691Heilongjiang Province, P.R.China.

ChinaRegistryAPNIC

As of 27th September 2026, AS137691 (Heilongjiang Province, P.R.China.), a network registered in China with APNIC, originates 37 IPv4 prefixes covering 426k addresses and 18 IPv6 prefixes. By IPv4 address space that makes it the 784th-largest of the 79,525 networks we see originating IPv4, and the 60th-largest of 607 in China. It is seen behind 1 upstream network, most often AS4134 (China Telecom Backbone). 98% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 36% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

37

IPv6 prefixes

18

IPv4 addresses

426k

IPv6 /64s

1.8B

Upstream graph

The networks AS137691 is seen behind, one and two hops out, drawn from real AS paths.

AS137691Toward the internet core
Upstream graph for AS137691: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137691Heilongjiang Prov…This networkAS4134China Telecom Bac…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS137691 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 AS137691
NetworkCountryRelationshipPathsVantage pts
AS4134China Telecom BackboneCNPeer1,337144

Prefixes

All 55

The largest blocks AS137691 originates, widest first.

Largest prefixes originated by AS137691
PrefixAddressesVisibility
112.102.0.0/1665.5k1/81
112.103.0.0/1665.5k1/81
123.165.0.0/1665.5k1/81
123.166.0.0/1665.5k1/81
42.100.0.0/1816.4k1/81
42.184.0.0/1816.4k1/81
42.185.0.0/1816.4k1/81
42.103.32.0/198.2k1/81
219.147.160.0/198.2k1/81
222.171.0.0/198.2k1/81

Routing health

How AS137691'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

  • Valid98.2%54
  • Invalid1.8%1
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more36.4%20
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%63.6%35

Prefix sizes

IPv4 — 37 prefixes

IPv6 — 18 prefixes

  • /36268M × /6427.8%5
  • /37134M × /6411.1%2
  • /3933.6M × /6427.8%5
  • /4865.5k × /6433.3%6

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS137691 started or stopped in this period.

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