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AS137721APNIC ASN block

IndonesiaRegistryAPNIC

As of 11th November 2026, AS137721 (APNIC ASN block), a network registered in Indonesia with APNIC, originates 1 IPv6 prefix. It is seen behind 1 upstream network, most often AS24357 (CERNET2 IX at South China University of…). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% 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

0

IPv6 prefixes

1

IPv4 addresses

0

IPv6 /64s

4.3B

Upstream graph

The networks AS137721 is seen behind, one and two hops out, drawn from real AS paths.

AS137721Toward the internet core
Upstream graph for AS137721: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137721APNIC ASN blockThis networkAS24357CERNET2 IX at Sou…AS4538China Education a…AS23910China Next Genera…

Networks observed one and two hops upstream of AS137721 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS137721
NetworkCountryRelationshipPathsVantage pts
AS24357CERNET2 IX at South China University of TechnologyCNPeer3131

Prefixes

The largest blocks AS137721 originates, widest first.

Largest prefixes originated by AS137721
PrefixAddressesVisibility
2406:e3c0::/324.3B × /6431/63

Routing health

How AS137721'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%1
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%100.0%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS137721 started or stopped in this period.

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