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AS9318SK Broadband Co Ltd

South KoreaRegistryAPNICTypeEyeball

As of 11th November 2026, AS9318 (SK Broadband Co Ltd), an access network registered in South Korea with APNIC, originates 821 IPv4 prefixes covering 25.8M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 24th-largest of the 80,747 networks we see originating IPv4, and the 2nd-largest of 915 in South Korea. It is seen behind 50 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS2914 (NTT America, Inc.), and in front of 400 downstream networks. 7% of its announcements have a valid RPKI ROA; 6 are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

821

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 SARLAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS6453TATA 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

1,058

adjacent networks

Upstreams
505%
Peers
60857%
Downstreams
40038%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 50.

Upstreams of AS9318
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer107,49685
AS2914NTT America, Inc.USPeer41,85162
AS35280F5 Networks SARLFRPeer15,6105
AS2497Internet Initiative Japan Inc.JPPeer14,1975
AS7713PT Telkom Indonesia TbkIDPeer13,3934
AS14537Continent 8 LLCUSPeer12,3042
AS4637Telstra International LimitedHKPeer12,2068
AS1299Arelion (fka. Telia Carrier)SEPeer9,24817
AS49544i3D.net B.VNLPeer8,9254
AS18106Viewqwest Pte LtdSGPeer6,8833

Prefixes

All 824

The largest blocks AS9318 originates, widest first.

Largest prefixes originated by AS9318
PrefixAddressesVisibility
1.224.0.0/112.1M75/76
39.112.0.0/121M75/76
58.224.0.0/121M75/76
175.112.0.0/121M75/76
1.224.0.0/13524k75/76
1.232.0.0/13524k75/76
1.240.0.0/13524k75/76
1.248.0.0/13524k75/76
58.120.0.0/13524k75/76
58.224.0.0/13524k75/76

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

  • Valid7.4%61
  • Invalid0.7%6
  • No ROA91.9%757

Propagation

  • Globally propagated90% of full-feed peers or more97.7%805
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.3%19

Prefix sizes

IPv4 — 821 prefixes

IPv6 — 3 prefixes

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

Recent changes

Announcements that started or stopped since 12th Oct 2026.

14 announced and 29 withdrawn in all; the most recent are shown.

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