AS9326 CENTRIN-AS-AP PT Centrin Utama

AS9326 (CENTRIN-AS-AP) is held by PT Centrin Utama, part of the Indonesian internet provider trading as Centrin Online (centrin.net.id), with registry contacts in Bandung, West Java. RIS sees 38 IPv4 prefixes carrying 42,496 addresses, 2 IPv6 prefixes, and 7 observed BGP neighbours.

What it's used for

Centrin is an access ISP serving Indonesian consumers and businesses, and the numbers fit: forty thousand addresses reached through a handful of neighbours is an eyeball network buying transit from a few Indonesian carriers, not a wholesale operator. Directory records show a small number of downstream Indonesian networks hanging off it, which is normal for an established local ISP that also resells connectivity, but nowhere near the peering breadth of a transit provider.

The address space is a long-held APNIC allocation built up over time: a 124.153.0.0/18, the 202.146.224.0/19 that has been Centrin's home range for years, a 113.11.128.0/19, plus 202.57.x, 203.166.x and a tail of /23s and /24s. Two IPv6 blocks (2406:b200::/32 and 2402:4100::/32) mean the network is dual-stacked. The sampled reverse DNS lands on the provider's own infrastructure rather than customer pools — a nameserver and a host named uranus.centrin.net.id — showing that the operator runs its service platform inside the same space it assigns to customers.

Notable

• Two separately allocated IPv6 /32s under one ASN is unusual and suggests resources gathered across more than one entity in the Centrin group.
• Registry records for the group also carry the prima.net.id domain, matching the Centrin Online Prima trading name.