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AS55803Hostopia Australia Web Pty Ltd

AustraliaRegistryAPNIC

As of 11th November 2026, AS55803 (Hostopia Australia Web Pty Ltd), a network registered in Australia with APNIC, originates 38 IPv4 prefixes covering 102k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 2,383rd-largest of the 80,747 networks we see originating IPv4, and the 47th-largest of 1,697 in Australia. It is seen behind 9 upstream networks, most often AS38195 (Superloop) and AS2914 (NTT America, Inc.), and in front of 1 downstream network. 98% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

38

IPv6 prefixes

3

IPv4 addresses

102k

IPv6 /64s

12.9B

Upstream graph

The networks AS55803 is seen behind, one and two hops out, drawn from real AS paths.

AS55803Toward the internet core
Upstream graph for AS55803: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS55803Hostopia Australi…This networkAS174Cogent Communicat…AS2914NTT America, Inc.AS6939Hurricane Electri…AS38195SuperloopAS58511Swoop (Anycast Gl…AS151326DCConnect Communi…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS3257GTT Communication…

Networks observed one and two hops upstream of AS55803 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

48

adjacent networks

Upstreams
919%
Peers
3879%
Downstreams
12%

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

Upstreams of AS55803
NetworkCountryRelationshipPathsVantage pts
AS38195SuperloopAUPeer2,393104
AS2914NTT America, Inc.USPeer2,00562
AS174Cogent Communications, LLCUSPeer1,57765
AS6939Hurricane Electric LLCUSPeer50961
AS58511Swoop (Anycast Global Backbone)AUPeer422
AS35280F5 Networks SARLFRPeer391
AS60068Datacamp Limited (CDN77 / DataPacket)GBPeer3130
AS38880Micron21 Datacentre Pty LtdAUPeer31
AS24516Virtutel Pty LtdAUPeer11

Prefixes

All 41

The largest blocks AS55803 originates, widest first.

Largest prefixes originated by AS55803
PrefixAddressesVisibility
101.0.64.0/1816.4k76/76
116.90.0.0/1816.4k76/76
182.160.128.0/1816.4k76/76
110.173.128.0/198.2k76/76
111.67.0.0/198.2k76/76
223.27.0.0/198.2k76/76
111.118.160.0/204.1k76/76
125.214.64.0/204.1k76/76
202.4.224.0/204.1k76/76
49.156.24.0/212k76/76

Routing health

How AS55803'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

  • Valid97.6%40
  • Invalid0.0%0
  • No ROA2.4%1

Propagation

  • Globally propagated90% of full-feed peers or more97.6%40
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.4%1

Prefix sizes

IPv4 — 38 prefixes

IPv6 — 3 prefixes

  • /324.3B × /64100.0%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced101.0.127.0/245th Nov 2026
  • Withdrawn101.0.127.0/2429th Oct 2026
  • Announced101.0.127.0/2422nd Oct 2026
  • Withdrawn103.254.137.0/2412th Oct 2026
  • Withdrawn27.123.26.0/2412th Oct 2026

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