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AS140979China Unicom Shanghai FuTe IDC network

ChinaRegistryAPNIC

As of 10th November 2026, AS140979 (China Unicom Shanghai FuTe IDC network), a network registered in China with APNIC, originates 189 IPv4 prefixes covering 57.3k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 4,252nd-largest of the 80,723 networks we see originating IPv4, and the 169th-largest of 617 in China. It is seen behind 1 upstream network, most often AS4837 (China Unicom Backbone). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

189

IPv6 prefixes

5

IPv4 addresses

57.3k

IPv6 /64s

4.3M

Upstream graph

The networks AS140979 is seen behind, one and two hops out, drawn from real AS paths.

AS140979Toward the internet core
Upstream graph for AS140979: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS140979China Unicom Shan…This networkAS4837China Unicom Back…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS140979 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

3

adjacent networks

Upstreams
133%
Peers
267%
Downstreams
00%

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

Upstreams of AS140979
NetworkCountryRelationshipPathsVantage pts
AS4837China Unicom BackboneCNPeer14,500138

Prefixes

All 194

The largest blocks AS140979 originates, widest first.

Largest prefixes originated by AS140979
PrefixAddressesVisibility
58.246.220.0/221k76/76
58.247.204.0/221k76/76
58.247.212.0/221k76/76
220.196.196.0/221k75/76
223.166.152.0/221k76/76
223.166.252.0/221k76/76
223.167.152.0/221k76/76
223.167.240.0/221k76/76
223.167.252.0/221k76/76
43.250.144.0/2351275/76

Routing health

How AS140979'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%194
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more99.5%193
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.5%1

Prefix sizes

IPv4 — 189 prefixes

IPv6 — 5 prefixes

  • /441M × /6480.0%4
  • /4865.5k × /6420.0%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

No announcement by AS140979 started or stopped in this period.

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