subnet.im

AS137726China Petroleum & Chemical Corporation

ChinaRegistryAPNIC

As of 26th September 2026, AS137726 (China Petroleum & Chemical Corporation), a network registered in China with APNIC, originates 2 IPv6 prefixes. It is seen behind 2 upstream networks, most often AS56048 (China Mobile Group Beijing Company) and AS4808 (China Unicom Beijing Province Network). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

0

IPv6 prefixes

2

IPv4 addresses

0

IPv6 /64s

17.6T

Upstream graph

The networks AS137726 is seen behind, one and two hops out, drawn from real AS paths.

AS137726Toward the internet core
Upstream graph for AS137726: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137726China Petroleum &…This networkAS4808China Unicom Beij…AS56048China Mobile Grou…AS4837China Unicom Back…AS9929China Unicom Indu…AS9808China Mobile Back…

Networks observed one and two hops upstream of AS137726 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS137726
NetworkCountryRelationshipPathsVantage pts
AS56048China Mobile Group Beijing CompanyCNPeer5252
AS4808China Unicom Beijing Province NetworkCNPeer77

Prefixes

The largest blocks AS137726 originates, widest first.

Largest prefixes originated by AS137726
PrefixAddressesVisibility
240a:c000::/2017.6T × /6452/64
240a:c0c0::/324.3B × /647/64

Routing health

How AS137726'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%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%50.0%1
  • Seen by few peersUnder 40%50.0%1

Prefix sizes

IPv6 — 2 prefixes

  • /2017.6T × /6450.0%1
  • /324.3B × /6450.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS137726 started or stopped in this period.

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