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AS12198JSMSR Network

United StatesRegistryARIN

As of 10th November 2026, AS12198 (JSMSR Network), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 1k addresses and 20 IPv6 prefixes. By IPv4 address space that makes it the 36,492nd-largest of the 80,733 networks we see originating IPv4, and the 8,241st-largest of 18,751 in the United States. It is seen behind 12 upstream networks, most often AS216211 (CYBERVERSE LLC) and AS137409 (GSL Networks Pty LTD), and in front of 2 downstream networks. 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

4

IPv6 prefixes

20

IPv4 addresses

1k

IPv6 /64s

2.3M

Upstream graph

The networks AS12198 is seen behind, one and two hops out, drawn from real AS paths.

AS12198Toward the internet core
Upstream graph for AS12198: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12198JSMSR NetworkThis networkAS983Akari Networks LLCAS18450WebNX, Inc.AS38074SDCC Japan-West A…AS137409GSL Networks Pty …AS216211CYBERVERSE LLCAS6461Zayo BandwidthAS6939Hurricane Electri…AS59103SoftEther Corpora…AS150363SoftEther Corpora…AS8529Zain Omantel Inte…AS32590Valve CorporationAS3491PCCW Global (HK) …

Networks observed one and two hops upstream of AS12198 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

44

adjacent networks

Upstreams
1227%
Peers
3068%
Downstreams
25%

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

Upstreams of AS12198
NetworkCountryRelationshipPathsVantage pts
AS216211CYBERVERSE LLCUSPeer47458
AS137409GSL Networks Pty LTDAUPeer386138
AS18450WebNX, Inc.USPeer200138
AS38074SDCC Japan-West AreaJPPeer13863
AS983Akari Networks LLCUSPeer13175
AS6939Hurricane Electric LLCUSPeer12362
AS206628Tianyu-ZhuUSPeer11456
AS27523Kawaii Networks LLCUSPeer7161
AS44324MoeDove LLCUSPeer6262
AS40792CYBERVERSEUSPeer396

Prefixes

The largest blocks AS12198 originates, widest first.

Largest prefixes originated by AS12198
PrefixAddressesVisibility
2.27.149.0/2425676/76
23.162.24.0/2425676/76
23.177.40.0/2425676/76
131.143.239.0/2425675/76
2406:840:e180::/441M × /6461/63
2406:840:e181::/4865.5k × /6461/63
2406:840:e182::/4865.5k × /6461/63
2602:f919:103::/4865.5k × /6462/63
2602:f919:104::/4865.5k × /6462/63
2602:f919:107::/4865.5k × /6462/63

Routing health

How AS12198'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 — 4 prefixes

IPv6 — 20 prefixes

  • /441M × /645.0%1
  • /4865.5k × /6495.0%19

Recent changes

Announcements that started or stopped since 12th Oct 2026.

9 announced and 11 withdrawn in all; the most recent are shown.

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