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AS9957KINX

South KoreaRegistryAPNIC

As of 27th September 2026, AS9957 (KINX), a network registered in South Korea with APNIC, originates 36 IPv4 prefixes covering 12.9k addresses. By IPv4 address space that makes it the 9,194th-largest of the 79,525 networks we see originating IPv4, and the 204th-largest of 908 in South Korea. It is seen behind 24 upstream networks, most often AS4766 (Korea Telecom) and AS3491 (PCCW Global (HK) Ltd.), and in front of 45 downstream networks. None of its announcements have a valid RPKI ROA. 83% of its routes reach at least 90% of full-feed peers, and 9 prefixes are also originated by another network.

At a glance

IPv4 prefixes

36

IPv6 prefixes

0

IPv4 addresses

12.9k

IPv6 /64s

0

Upstream graph

The networks AS9957 is seen behind, one and two hops out, drawn from real AS paths.

AS9957Toward the internet core
Upstream graph for AS9957: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9957KINXThis networkAS174Cogent Communicat…AS2914NTT America, Inc.AS3491PCCW Global (HK) …AS4766Korea TelecomAS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS3130RGnet OUAS49544i3D.net B.VAS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS132337Axclusive

Networks observed one and two hops upstream of AS9957 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

178

adjacent networks

Upstreams
2413%
Peers
10961%
Downstreams
4525%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS9957
NetworkCountryRelationshipPathsVantage pts
AS4766Korea TelecomKRPeer16,00681
AS3491PCCW Global (HK) Ltd.HKPeer14,194100
AS2914NTT America, Inc.USPeer9,531145
AS174Cogent Communications, LLCUSPeer8,562136
AS6939Hurricane Electric LLCUSPeer5,360143
AS4635HKIX Route ServersHKPeer1,68215
AS58453China Mobile InternationalHKPeer1,37464
AS35280F5 Networks SARLFRPeer9764
AS4637Telstra International LimitedHKPeer62073
AS23764China Telecom GlobalHKPeer52710

Prefixes

All 36

The largest blocks AS9957 originates, widest first.

Largest prefixes originated by AS9957
PrefixAddressesVisibility
203.238.176.0/204.1k81/81
1.201.42.0/2425681/81
1.201.134.0/2425681/81
1.201.182.0/2425681/81
1.201.210.0/2425681/81
121.78.0.0/2425681/81
121.78.1.0/2425681/81
121.78.2.0/2425681/81
121.78.3.0/2425681/81
121.78.4.0/242567/81

Routing health

How AS9957's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%36

Propagation

  • Globally propagated90% of full-feed peers or more83.3%30
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%16.7%6

Prefix sizes

IPv4 — 36 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Announced121.78.10.0/2424th Sept 2026
  • Announced121.78.7.0/2424th Sept 2026
  • Announced121.78.8.0/2424th Sept 2026
  • Announced121.78.9.0/2424th Sept 2026
  • Withdrawn49.50.48.0/2421st Sept 2026
  • Withdrawn49.50.50.0/2421st Sept 2026
  • Withdrawn49.50.51.0/2421st Sept 2026
  • Withdrawn49.50.52.0/2421st Sept 2026
  • Withdrawn49.50.53.0/2421st Sept 2026

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.