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AS133448Korea

Hong Kong SAR ChinaRegistryAPNIC

As of 10th November 2026, AS133448 (Korea), a network registered in Hong Kong SAR China with APNIC, originates 12 IPv4 prefixes covering 3.1k addresses. By IPv4 address space that makes it the 20,468th-largest of the 80,723 networks we see originating IPv4, and the 297th-largest of 759 in Hong Kong SAR China. It is seen behind 4 upstream networks, most often AS55720 (Gigabit Hosting Sdn Bhd) and AS138995 (Antbox Networks Limited), and in front of 1 downstream network. 67% of its announcements have a valid RPKI ROA; 4 are RPKI-invalid. 67% of its routes reach at least 90% of full-feed peers, and 4 prefixes are also originated by another network.

At a glance

IPv4 prefixes

12

IPv6 prefixes

0

IPv4 addresses

3.1k

IPv6 /64s

0

Upstream graph

The networks AS133448 is seen behind, one and two hops out, drawn from real AS paths.

AS133448Toward the internet core
Upstream graph for AS133448: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS133448KoreaThis networkAS13335Cloudflare, Inc.AS55720Gigabit Hosting S…AS132825MYTEK TRADING PTY…AS138995Antbox Networks L…AS3356Lumen (Level 3)AS2914NTT America, Inc.AS59796StormWall s.r.o.AS3491PCCW Global (HK) …

Networks observed one and two hops upstream of AS133448 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

11

adjacent networks

Upstreams
436%
Peers
655%
Downstreams
19%

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

Upstreams of AS133448
NetworkCountryRelationshipPathsVantage pts
AS55720Gigabit Hosting Sdn BhdMYPeer30276
AS138995Antbox Networks LimitedHKPeer22876
AS132825MYTEK TRADING PTY LTDAUPeer9876
AS13335Cloudflare, Inc.USPeer7676

Prefixes

The largest blocks AS133448 originates, widest first.

Largest prefixes originated by AS133448
PrefixAddressesVisibility
45.204.19.0/2425676/76
45.204.22.0/2425676/76
45.204.23.0/2425676/76
101.55.59.0/2425676/76
103.86.85.0/2425676/76
103.86.87.0/2425676/76
103.101.188.0/2425676/76
119.42.33.0/2425676/76
154.89.8.0/242565/76
154.89.9.0/242565/76

Routing health

How AS133448'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

  • Valid66.7%8
  • Invalid33.3%4
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more66.7%8
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%33.3%4

Prefix sizes

IPv4 — 12 prefixes

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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