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AS7539National Center for High-performance Computing

TaiwanRegistryAPNIC

As of 23rd October 2026, AS7539 (National Center for High-performance…), a network registered in Taiwan with APNIC, originates 13 IPv4 prefixes covering 89.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 2,564th-largest of the 79,652 networks we see originating IPv4, and the 31st-largest of 233 in Taiwan. It is seen behind 10 upstream networks, most often AS6461 (Zayo Bandwidth) and AS9924 (Taiwan Fixed Network, Telco and Network…), and in front of 12 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 64% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

13

IPv6 prefixes

1

IPv4 addresses

89.1k

IPv6 /64s

4.3B

Upstream graph

The networks AS7539 is seen behind, one and two hops out, drawn from real AS paths.

AS7539Toward the internet core
Upstream graph for AS7539: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7539National Center f…This networkAS2153CENICAS6461Zayo BandwidthAS6939Hurricane Electri…AS9264Academia SinicaAS9924Taiwan Fixed Netw…AS2914NTT America, Inc.AS32590Valve CorporationAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS9505Taiwan Internet G…AS3491PCCW Global (HK) …AS9002RETN Limited

Networks observed one and two hops upstream of AS7539 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

53

adjacent networks

Upstreams
1019%
Peers
3158%
Downstreams
1223%

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

Upstreams of AS7539
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer54273
AS9924Taiwan Fixed Network, Telco and Network Service Provider.TWPeer53687
AS6939Hurricane Electric LLCUSPeer8743
AS9264Academia SinicaTWPeer802
AS2153CENICUSPeer531
AS293ESnetUSPeer511
AS7713PT Telkom Indonesia TbkIDPeer273
AS24482SG.GSSGPeer91
AS11537Internet2USPeer31
AS14537Continent 8 LLCUSPeer11

Prefixes

The largest blocks AS7539 originates, widest first.

Largest prefixes originated by AS7539
PrefixAddressesVisibility
140.110.0.0/1665.5k77/77
211.73.64.0/198.2k77/77
203.145.208.0/204.1k77/77
211.79.48.0/204.1k77/77
140.110.200.0/212k77/77
203.145.200.0/212k77/77
103.124.72.0/221k77/77
103.160.220.0/235122/77
211.73.68.0/235122/77
103.124.72.0/242562/77

Routing health

How AS7539'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%14
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more64.3%9
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%35.7%5

Prefix sizes

IPv4 — 13 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS7539 started or stopped in this period.

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