Autonomous system
AS9920 ISTVC-AS-TW
Unclassified RIPE Educational/Research
Summary
Improve System Technology (ISTVC)
enterprise legacy
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
103.173/24allocation is from a much later APNIC block. - Both v4 and v6 are announced, which is more than many far larger Taiwanese networks manage.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Taipei Internet Exchange (TPIX) | Taipei, Taiwan | 203.163.223.111 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 0 prefixes
This network announces no prefixes we can see.
Registry
Allocation record
- Registry
- RIPE
- Handle
AS9920- Registry name
- ISTVC-AS-TW
- Abuse contact
- tonychang22@istvc.com.tw
- Registered
- 2021-09-23
- Last changed
- 2026-06-21
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- IMPROVE SYSTEM TECHNOLOGY CO.
- Network type
- Educational/Research
- Scope
- Asia Pacific
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS9920- Present at
- 1 exchanges
- Facilities
- 1 facilities
- Website
- https://www.istvc.com.tw
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- ROAs
- 4 authorising AS9920
- ASPA
- no ASPA record
- Route objects
- 4 naming AS9920
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere