subnet.im

AS210576Sangmin Lee trading as YAGUMYAGUM

South KoreaRegistryRIPE NCC

As of 27th September 2026, AS210576 (Sangmin Lee trading as YAGUMYAGUM), a network registered in South Korea with RIPE NCC, originates 3 IPv4 prefixes covering 768 addresses and 21 IPv6 prefixes. By IPv4 address space that makes it the 44,914th-largest of the 79,525 networks we see originating IPv4, and the 553rd-largest of 908 in South Korea. It is seen behind 6 upstream networks, most often AS20473 (The Constant Company, LLC) and AS52025 (ParadoxNetworks Limited), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

3

IPv6 prefixes

21

IPv4 addresses

768

IPv6 /64s

1.4M

Upstream graph

The networks AS210576 is seen behind, one and two hops out, drawn from real AS paths.

AS210576Toward the internet core
Upstream graph for AS210576: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS210576Sangmin Lee tradi…This networkAS6939Hurricane Electri…AS20473The Constant Comp…AS23961Misaka Network, I…AS31898Oracle CloudAS52025ParadoxNetworks L…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS60068Datacamp Limited …AS137409GSL Networks Pty …AS835GoCodeIT Inc

Networks observed one and two hops upstream of AS210576 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

18

adjacent networks

Upstreams
633%
Peers
1161%
Downstreams
16%

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

Upstreams of AS210576
NetworkCountryRelationshipPathsVantage pts
AS20473The Constant Company, LLCUSPeer1,186145
AS52025ParadoxNetworks LimitedGBPeer499135
AS31898Oracle CloudUSPeer6363
AS23961Misaka Network, Inc.USPeer1212
AS6939Hurricane Electric LLCUSPeer99
AS142616Misaka Network, Inc.JPPeer22

Prefixes

The largest blocks AS210576 originates, widest first.

Largest prefixes originated by AS210576
PrefixAddressesVisibility
2.27.104.0/2425681/81
154.16.33.0/2425681/81
182.237.42.0/2425681/81
2602:f494:1::/4865.5k × /6464/64
2602:f494:4::/4865.5k × /6463/64
2607:eb40:2001::/4865.5k × /6463/64
2607:eb40:2a00::/4865.5k × /6463/64
2a06:a005:1110::/4865.5k × /6464/64
2a06:a005:1111::/4865.5k × /6464/64
2a06:a005:1112::/4865.5k × /6464/64

Routing health

How AS210576'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

  • Valid100.0%24
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%24
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 21 prefixes

  • /4865.5k × /64100.0%21

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.