subnet.im

AS151660Neptune Internet

AustraliaRegistryAPNIC

As of 11th November 2026, AS151660 (Neptune Internet), a network registered in Australia with APNIC, originates 20 IPv4 prefixes covering 10.8k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 10,256th-largest of the 80,743 networks we see originating IPv4, and the 165th-largest of 1,696 in Australia. It is seen behind 4 upstream networks, most often AS137409 (GSL Networks Pty LTD) and AS58511 (Swoop (Anycast Global Backbone)), and in front of 10 downstream networks. 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

20

IPv6 prefixes

10

IPv4 addresses

10.8k

IPv6 /64s

21.5B

Upstream graph

The networks AS151660 is seen behind, one and two hops out, drawn from real AS paths.

AS151660Toward the internet core
Upstream graph for AS151660: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS151660Neptune InternetThis networkAS35280F5 Networks SARLAS38880Micron21 Datacent…AS58511Swoop (Anycast Gl…AS137409GSL Networks Pty …AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS9002RETN LimitedAS32590Valve CorporationAS3491PCCW Global (HK) …AS8529Zain Omantel Inte…

Networks observed one and two hops upstream of AS151660 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

50

adjacent networks

Upstreams
48%
Peers
3672%
Downstreams
1020%

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

Upstreams of AS151660
NetworkCountryRelationshipPathsVantage pts
AS137409GSL Networks Pty LTDAUPeer3,003134
AS58511Swoop (Anycast Global Backbone)AUPeer442
AS35280F5 Networks SARLFRPeer241
AS38880Micron21 Datacentre Pty LtdAUPeer171

Prefixes

All 30

The largest blocks AS151660 originates, widest first.

Largest prefixes originated by AS151660
PrefixAddressesVisibility
157.85.240.0/221k76/76
157.85.244.0/221k76/76
160.222.152.0/221k76/76
160.222.156.0/221k76/76
103.252.194.0/2351276/76
138.252.22.0/2351276/76
157.85.248.0/2351276/76
157.85.250.0/2351276/76
157.85.252.0/2351276/76
157.85.254.0/2351276/76

Routing health

How AS151660'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%30
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%30
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 20 prefixes

IPv6 — 10 prefixes

  • /324.3B × /6450.0%5
  • /4016.8M × /6430.0%3
  • /4865.5k × /6420.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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