AS9759 CJCYBER-AS HIINVESTMENT SECURITIES CO., LTD

AS9759 (CJCYBER-AS) is held by HI Investment & Securities Co., Ltd., a South Korean brokerage. The handle is a fossil, and a good example of why a handle is never evidence of who holds a network: the firm was once CJ Investment & Securities, was sold to the Hyundai Heavy Industries group in 2008 and renamed HI Investment & Securities, then passed to DGB Financial Group and was rebranded iM Securities in August 2024. The CJCYBER string outlived two owners.

What it's used for

This is a corporate enterprise network, not a service provider. RIS shows 1,536 IPv4 addresses in six /24 prefixes, drawn from two small clusters — 210.120.88.0/24, 210.120.89.0/24 and 210.120.90.0/24, plus 210.124.204.0/24 and 210.124.205.0/24, with a stray 124.111.246.0/24. Six flat /24s and only two observed BGP neighbours is the signature of a company that runs its own address space for multi-homing resilience and buys transit from a couple of Korean carriers. A brokerage has a hard availability requirement during market hours, which is exactly the reason to hold portable space and an ASN rather than sit behind a single provider's addresses. No IPv6 is announced.

Notable

• The registry record lags the corporate reality by more than one rename. Anyone matching this AS on the CJ string will attribute it to the wrong conglomerate entirely.
• The tiny, evenly-sized allocations point at trading, back-office and public-facing systems in a small number of data centres rather than at any customer-facing hosting.