AS9920 ISTVC-AS-TW IMPROVE SYSTEM TECHNOLOGY CO., LTD.

AS9920 (ISTVC-AS-TW) is held by Improve System Technology Co., Ltd. (樂晉科技), a Taiwanese audiovisual and videoconferencing systems integrator. The company designs, installs and maintains multipoint video-conference platforms, digital multimedia AV integration, LED/LCD video walls and room-control systems for public-sector and corporate customers. It is an integrator, not a service provider.

What it's used for

A single, self-contained corporate network. RIS sees exactly one IPv4 prefix, 103.173.95.0/24 (256 addresses), one IPv6 prefix (2407:e4c0:1::/48), and 5 observed BGP neighbours. There is no ambiguity about the role at that size: 256 addresses cannot serve subscribers or fill a hosting platform, and a company with a single /24 is not selling transit to anyone.

What the five neighbours suggest is that the address space matters more than its size. An integrator whose product is multipoint video conferencing runs bridging infrastructure — MCUs, gatekeepers, recording and management servers — that has to be reachable at stable public addresses from customer sites, and that is sensitive to path quality. Multihoming a small block across several upstreams is a rational thing to do for exactly that workload, and it explains why a company of this size bothers to run BGP at all.

Notable

• The low ASN is a fossil, not a sign of age at this company. The number is legacy-range but the current holder's 103.173/24 allocation is from a much later APNIC block.
• Both v4 and v6 are announced, which is more than many far larger Taiwanese networks manage.