subnet.im

AS136491TIDALPORT INTERNATIONAL LIMITED

Hong Kong SAR ChinaRegistryAPNIC

As of 28th September 2026, AS136491 (TIDALPORT INTERNATIONAL LIMITED), a network registered in Hong Kong SAR China with APNIC, originates 3 IPv4 prefixes covering 768 addresses. By IPv4 address space that makes it the 44,919th-largest of the 79,544 networks we see originating IPv4, and the 486th-largest of 734 in Hong Kong SAR China. It is seen behind 3 upstream networks, most often AS45250 (Vocom International Telecommunications…) and AS140570 (Hong Kong Beecloud System Technology…), and in front of 4 downstream networks. 33% of its announcements have 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

0

IPv4 addresses

768

IPv6 /64s

0

Upstream graph

The networks AS136491 is seen behind, one and two hops out, drawn from real AS paths.

AS136491Toward the internet core
Upstream graph for AS136491: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS136491TIDALPORT INTERNA…This networkAS45250Vocom Internation…AS140570Hong Kong Beeclou…AS216458Hardcore Communic…AS174Cogent Communicat…AS9304HGC Global Commun…AS3491PCCW Global (HK) …AS9002RETN LimitedAS4134China Telecom Bac…AS23764China Telecom Glo…

Networks observed one and two hops upstream of AS136491 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

16

adjacent networks

Upstreams
319%
Peers
956%
Downstreams
425%

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

Upstreams of AS136491
NetworkCountryRelationshipPathsVantage pts
AS45250Vocom International Telecommunications AP AreaUSPeer16382
AS140570Hong Kong Beecloud System Technology Services LimitedHKPeer8282
AS216458Hardcore Communication Co., LimitedHKPeer142

Prefixes

The largest blocks AS136491 originates, widest first.

Largest prefixes originated by AS136491
PrefixAddressesVisibility
38.47.51.0/2425682/82
160.202.45.0/2425681/82
163.227.84.0/2425682/82

Routing health

How AS136491'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

  • Valid33.3%1
  • Invalid0.0%0
  • No ROA66.7%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 29th Aug 2026.

No announcement by AS136491 started or stopped in this period.

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