AS9836 HPCLMUMBAI-IN-AS-AP Hindustan Petroleum Corporation Limited

AS9836 (HPCLMUMBAI-IN-AS-AP) is held by Hindustan Petroleum Corporation Limited (HPCL), an Indian state-owned oil and gas company headquartered in Mumbai. This is a corporate end-user AS: the company runs it for its own connectivity, not as a service sold to anyone else.

What it's used for

The footprint is minimal and the evidence is unambiguous. RIS sees exactly one IPv4 prefix, 203.175.185.0/24 (256 addresses), no IPv6 at all, and three BGP neighbours. Three upstreams against a single /24 is the classic enterprise multihoming pattern: HPCL is not trying to reach more of the internet, it is trying to stay reachable when one carrier fails. The addresses are almost certainly consumed by public-facing corporate services and inbound access to the company's own estate rather than by any kind of hosting or downstream customers.

The absence of IPv6 and the lack of any prefix growth beyond the original /24 mark this out as a long-standing, static allocation. Nothing in the routing table suggests HPCL uses this AS for anything beyond its own enterprise edge, and the -MUMBAI in the handle points at a single corporate site rather than a distributed network.

Notable

• An enterprise holding a low-numbered 2-byte ASN is a sign of an early registration, but the AS number itself says nothing about the network's current scale, which is one /24.
• The AS multihomes despite its tiny address footprint, which indicates the connectivity is business-critical to the company.