AS9890 — ATOSINFOTECH-SG-AP - ATOS Information Technology (Singapore) Pte Ltd
AS9890 announces 8 IPv4 prefixes covering 7,680 addresses and 1 IPv6 prefixes.
About this network
AS9890 (ATOSINFOTECH-SG-AP) is held by Atos Information Technology (Singapore) Pte Ltd, the Singapore arm of Atos SE, the French IT services and managed-outsourcing group. This is a managed-services network: Atos runs infrastructure on behalf of corporate clients, and this AS is where the Asia-Pacific end of that lands.
What it's used for
RIS sees 16 IPv4 prefixes carrying 8,448 addresses, 1 IPv6 prefix (2a00:ad87:4600::/48), and 2 observed BGP neighbours. Two neighbours rules out any transit role; the AS buys connectivity and announces its own and its customers' space behind it. The give-away is whose space it announces. Alongside its own 203.95.64.0/20-area blocks, AS9890 originates /24s out of 194.138.x — part of a large block registered to Siemens — and out of 143.99.x and 155.45.x. Addresses in 194.138.240.0/24 carry siemens.com hostnames. That is the fingerprint of an outsourcing arrangement: Atos operates the network, the client owns the addresses.
Notable
- Atos acquired Siemens IT Solutions and Services in 2011, which is the historical reason a French IT-services company announces Siemens-registered address space from a Singapore AS. This is a clean example of why registrant and operator can diverge.
- It is also a clean example of the reverse-DNS rule: siemens.com PTRs inside this AS do not make it Siemens' network. They show what the space carries, not who holds the ASN.
- The mixture of ARIN-, RIPE- and APNIC-region blocks in a single small AS looks superficially like the address-broker pattern, but here it has an ordinary explanation — a global outsourcer serving multinational clients whose address space was allocated wherever their headquarters happens to be.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 103.115.98.0/24
- 143.99.202.0/24
- 143.99.241.0/24
- 194.138.185.0/24
- 194.138.244.0/24
- 203.95.64.0/21
- 203.95.80.0/20
- 203.127.206.0/24
- 2a00:ad87:4600::/48
Upstream networks
Adjacent networks
Routing security
- RPKI: 3 valid, 0 invalid and 12 not-found announcements; 3 ROAs.
- ASPA: none published.
- IRR: 87% of announcements registered; 40 route objects.
- Listed in as-sets: AS-132132-TRANSIT, AS-ANC, AS-HURRICANEV6, AS-IIJ, AS-IIJ6, AS-KDDCUSTOMER2, AS-PACNET, AS-PACNET-CUSTOMER-PROXY-REGISTER, AS-PACNET-DOWNSTREAM-SG, AS-RETN-ACTUAL-V4, AS-SH-CUST, AS-TELSTRA-INTL-CUSTOMERS, AS198949:AS-SD, AS2497:AS-IIJ, AS2497:AS-IIJ6, AS3491:AS-CUSTOMERS-AP, AS58453:AS-ASIAASCUST, AS58453:AS-ASIAASCUST, AS58453:AS-ASIATEST, AS7473:AS-CUSTOMERS:AS3758, AS7473:AS-CUSTOMERS:AS4750, AS7473:AS-CUSTOMERS:AS7552.
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