AS9805 — ENS-PEK SIEMENS LTD. CHINA
AS9805 announces 2 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.
About this network
AS9805 (ENS-PEK) is held by Siemens Ltd. China, the Chinese arm of the German industrial conglomerate. The handle reads as Siemens' Enterprise Network Services at Peking/Beijing, and the routing evidence backs that up: this is a corporate network, not a service provider.
What it's used for
RIS sees exactly 2 IPv4 prefixes and 512 addresses, announced through 2 BGP neighbours, with no IPv6. Both prefixes — 194.138.202.0/24 and 194.138.245.0/24 — come out of 194.138.0.0/16, the RIPE block Siemens has long used for its worldwide corporate network; the two /24s carved out and announced from Beijing are the Chinese entity's slice of it. Sampled reverse DNS resolves straight into Siemens' own Chinese domain (www.sit.siemens.com.cn, odpoc.siemens.com.cn), so the space is carrying Siemens-branded application and web endpoints rather than customer traffic. Two /24s and a pair of upstreams is the classic multihomed enterprise DMZ pattern: enough address space to publish public-facing corporate services and enough redundancy to keep them reachable, with no ambition to move anyone else's packets.
Notable
- The AS number is low because Siemens' network registrations date from the early commercial internet, but this specific AS is the China entity, not the group backbone.
- Address space is RIPE-registered (194.138/16) even though the network is announced from China — a reminder that RIR of record does not follow geography for multinationals.
- No IPv6 is announced.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 194.138.202.0/24
- 194.138.245.0/24
Upstream networks
Adjacent networks
Routing security
- RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
- ASPA: none published.
- IRR: 100% of announcements registered; 2 route objects.
- Listed in as-sets: AS-9929ARCSTAR, AS-CTBJ, AS-PNAPSEA, AS4808:AS-CNCGROUP-BJ.
awaiting query
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