Autonomous system
AS9959 KOREASTOCKEXCHANGE-AS KOREA STOCK EXCHANGE
Unclassified ARIN
Summary
Korea Exchange (KRX)
enterprise legacy
AS9959 (KOREASTOCKEXCHANGE-AS-KR) is registered to the Korea Stock Exchange — the institution that, together with the Korea Futures Exchange and KOSDAQ, was consolidated into today's Korea Exchange (KRX), South Korea's sole securities and derivatives exchange operator, headquartered in Busan with market operations in Seoul. The registry handle preserves the pre-merger name.
What it's used for
RIS sees 18 announced IPv4 prefixes totalling 4,608 addresses, no IPv6, and 4 observed BGP neighbours. Every announcement is a /24. That is a deliberate shape for a financial market operator: small, precisely-scoped blocks that can be routed, filtered and moved independently, drawn from several ranges (203.235/16 provides about half of them, with others in 210.206, 210.126, 211.180, 115.22, 106.249 and 210.113).
Four BGP neighbours is more than a plain single-homed enterprise and far fewer than any provider. It fits an organisation that needs resilient, multi-homed reachability — an exchange cannot afford a single upstream failure to isolate its market-data and member-connectivity systems — without having any interest in selling transit or peering broadly. Read the addresses as exchange infrastructure: market data distribution, member/broker connectivity, disclosure and corporate services.
Notable
- KRX operates the Stock Market, KOSDAQ and Derivatives market divisions; addresses here belong to the market operator itself, not to the brokerages that connect to it.
- The exclusively-
/24announcement pattern and multi-homing are typical of financial-sector networks where routing control matters more than table efficiency. - No IPv6 is announced.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 12 prefixes · 4.61K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 12 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS9959- Registry name
- KOREASTOCKEXCHANGE-AS-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 2000-04-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 18 with no ROA
- ROAs
- 0 authorising AS9959
- ASPA
- no ASPA record
- IRR
- 100% registered · 18 of 18 announcements
- Route objects
- 20 naming AS9959
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: 442 networks and 1,773 prefixes, as published 2026-10-13. 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