subnet.im

AS140290CHINATELECOM Jiangsu province 5G CORE network

ChinaRegistryAPNIC

As of 10th November 2026, AS140290 (CHINATELECOM Jiangsu province 5G CORE…), a network registered in China with APNIC, originates 3 IPv6 prefixes. It is seen behind 1 upstream network, most often AS23650 (China Telecom Jiangsu Province IDC…). Every one of its announcements has 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

0

IPv6 prefixes

3

IPv4 addresses

0

IPv6 /64s

12.6M

Upstream graph

The networks AS140290 is seen behind, one and two hops out, drawn from real AS paths.

AS140290Toward the internet core
Upstream graph for AS140290: 2 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS140290CHINATELECOM Jian…This networkAS23650China Telecom Jia…AS4134China Telecom Bac…

Networks observed one and two hops upstream of AS140290 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 AS140290
NetworkCountryRelationshipPathsVantage pts
AS23650China Telecom Jiangsu Province IDC NetworkCNPeer18361

Prefixes

The largest blocks AS140290 originates, widest first.

Largest prefixes originated by AS140290
PrefixAddressesVisibility
240e:5a:4000::/424.2M × /6461/63
240e:5a:4040::/424.2M × /6461/63
240e:5a:4080::/424.2M × /6461/63

Routing health

How AS140290'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%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 3 prefixes

  • /424.2M × /64100.0%3

Recent changes

Announcements that started or stopped since 11th Oct 2026.

No announcement by AS140290 started or stopped in this period.

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