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AS9318SK Broadband Co Ltd

South KoreaRegistryAPNICTypeEyeball

As of 27th September 2026, AS9318 (SK Broadband Co Ltd), an access network registered in South Korea with APNIC, originates 843 IPv4 prefixes covering 25.8M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 23rd-largest of the 79,525 networks we see originating IPv4, and the 2nd-largest of 908 in South Korea. It is seen behind 54 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS2914 (NTT America, Inc.), and in front of 398 downstream networks. 10% of its announcements have a valid RPKI ROA; 5 are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

843

IPv6 prefixes

3

IPv4 addresses

25.8M

IPv6 /64s

8.6B

Upstream graph

The networks AS9318 is seen behind, one and two hops out, drawn from real AS paths.

AS9318Toward the internet core
Upstream graph for AS9318: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9318SK Broadband Co L…This networkAS2497Internet Initiati…AS2914NTT America, Inc.AS6939Hurricane Electri…AS7713PT Telkom Indones…AS35280F5 Networks SARLAS3130RGnet OUAS49544i3D.net B.VAS1299Arelion (fka. Tel…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6453TATA Communicatio…AS32590Valve Corporation

Networks observed one and two hops upstream of AS9318 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

1,068

adjacent networks

Upstreams
545%
Peers
61658%
Downstreams
39837%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 54.

Upstreams of AS9318
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer116,43685
AS2914NTT America, Inc.USPeer42,69567
AS2497Internet Initiative Japan Inc.JPPeer15,8185
AS35280F5 Networks SARLFRPeer15,1285
AS7713PT Telkom Indonesia TbkIDPeer13,4154
AS4637Telstra International LimitedHKPeer12,5518
AS1299Arelion (fka. Telia Carrier)SEPeer11,90858
AS49544i3D.net B.VNLPeer8,9794
AS701Verizon BusinessUSPeer7,99833
AS32590Valve CorporationUSPeer6,8792

Prefixes

All 846

The largest blocks AS9318 originates, widest first.

Largest prefixes originated by AS9318
PrefixAddressesVisibility
1.224.0.0/112.1M80/81
39.112.0.0/121M79/81
58.224.0.0/121M80/81
175.112.0.0/121M79/81
1.224.0.0/13524k80/81
1.232.0.0/13524k80/81
1.240.0.0/13524k80/81
1.248.0.0/13524k80/81
58.120.0.0/13524k80/81
58.224.0.0/13524k80/81

Routing health

How AS9318'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

  • Valid10.2%86
  • Invalid0.6%5
  • No ROA89.2%755

Propagation

  • Globally propagated90% of full-feed peers or more98.5%833
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.5%13

Prefix sizes

IPv4 — 843 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6466.7%2
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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