subnet.im

AS1659Taiwan Academic Network (TANet) Information Center

TaiwanRegistryAPNICTypeEyeball

As of 23rd October 2026, AS1659 (Taiwan Academic Network (TANet)…), an access network registered in Taiwan with APNIC, originates 71 IPv4 prefixes covering 6.3M addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 117th-largest of the 79,652 networks we see originating IPv4, and the 2nd-largest of 233 in Taiwan. It is seen behind 4 upstream networks, most often AS17717 (Ministry of Education Computer Center…) and AS7539 (National Center for High-performance…). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 53% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

71

IPv6 prefixes

1

IPv4 addresses

6.3M

IPv6 /64s

4.3B

Upstream graph

The networks AS1659 is seen behind, one and two hops out, drawn from real AS paths.

AS1659Toward the internet core
Upstream graph for AS1659: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1659Taiwan Academic N…This networkAS7539National Center f…AS9264Academia SinicaAS17711National Dong Hwa…AS17717Ministry of Educa…AS6461Zayo BandwidthAS9924Taiwan Fixed Netw…AS9505Taiwan Internet G…AS6939Hurricane Electri…AS4637Telstra Internati…

Networks observed one and two hops upstream of AS1659 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

9

adjacent networks

Upstreams
444%
Peers
556%
Downstreams
00%

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

Upstreams of AS1659
NetworkCountryRelationshipPathsVantage pts
AS17717Ministry of Education Computer Center Taipei, TaiwanTWPeer2,749141
AS7539National Center for High-performance ComputingTWPeer22477
AS9264Academia SinicaTWPeer22
AS17711National Dong Hwa UniversityTWPeer22

Prefixes

All 72

The largest blocks AS1659 originates, widest first.

Largest prefixes originated by AS1659
PrefixAddressesVisibility
120.96.0.0/112.1M76/77
140.112.0.0/121M76/77
140.128.0.0/13524k76/77
163.16.0.0/13524k76/77
163.24.0.0/14262k77/77
140.110.0.0/15131k77/77
140.136.0.0/15131k77/77
163.14.0.0/15131k77/77
163.30.0.0/15131k77/77
134.208.0.0/1665.5k77/77

Routing health

How AS1659'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%72
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more52.8%38
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%47.2%34

Prefix sizes

IPv4 — 71 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

  • Announced192.192.21.0/2428th Sept 2026
  • Announced192.192.24.0/2328th Sept 2026
  • Announced192.192.26.0/2428th Sept 2026
  • Withdrawn192.192.21.0/2424th Sept 2026
  • Withdrawn192.192.24.0/2324th Sept 2026
  • Withdrawn192.192.26.0/2424th Sept 2026

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