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AS134789OPTICALHASH COMMUNICATIONS PTE LTD

SingaporeRegistryAPNIC

As of 11th November 2026, AS134789 (OPTICALHASH COMMUNICATIONS PTE LTD), a network registered in Singapore with APNIC, originates 3 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 36,499th-largest of the 80,743 networks we see originating IPv4, and the 211th-largest of 450 in Singapore. It is seen behind 2 upstream networks, most often AS9304 (HGC Global Communications Limited) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 1 downstream network. 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

3

IPv6 prefixes

0

IPv4 addresses

1k

IPv6 /64s

0

Upstream graph

The networks AS134789 is seen behind, one and two hops out, drawn from real AS paths.

AS134789Toward the internet core
Upstream graph for AS134789: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS134789OPTICALHASH COMMU…This networkAS1299Arelion (fka. Tel…AS9304HGC Global Commun…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS6453TATA Communicatio…AS15412Flag Telecom UK L…

Networks observed one and two hops upstream of AS134789 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

6

adjacent networks

Upstreams
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS134789
NetworkCountryRelationshipPathsVantage pts
AS9304HGC Global Communications LimitedHKPeer28675
AS1299Arelion (fka. Telia Carrier)SEPeer6221

Prefixes

The largest blocks AS134789 originates, widest first.

Largest prefixes originated by AS134789
PrefixAddressesVisibility
151.158.96.0/2351276/76
154.196.138.0/2425676/76
156.240.76.0/2425676/76

Routing health

How AS134789'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%3
  • Invalid0.0%0
  • No ROA0.0%0

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 12th Oct 2026.

No announcement by AS134789 started or stopped in this period.

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