SUBNET.IM

103.103.78.0/23

At a glance

Addresses

512

/23 block

Visibility

100%

80 of 80 vantage points

RPKI

Valid

Registry

APNICAU

Allocated 2nd November 2017

AS paths to this prefix

One real path per vantage point, fanning out from the origin. Where two reach the prefix the same way, those hops are drawn once. Open a path to follow it hop by hop.

  1. London, UK1370571386579507122146378529This path
  2. Sao Paulo13705713865713907775943356266213This path
  3. Singapore1370571386579507747474734229132337This path
  4. Oregon, US137057138657950774747473693920130This path
  5. Amsterdam137057138657950774747473646134549213151This path

Each row is one path genuinely present in the routing table at our last snapshot, read outward from the origin to the vantage point that saw it. Open a row to follow that one path hop by hop. A heavier line in the graph means more vantage points reach the prefix that same way.

Route visibility

100%

Seen by 80 of 80 full-feed vantage points

Globally propagated

Observed at 5 of our collectors.

What this percentage counts

The denominator counts only full-feed peers — peers carrying a substantially complete routing table at the moment of the snapshot. IXP route-server peers usually feed partial tables and are excluded, because including them would make a normally propagated prefix look as though half the internet could not see it.

It measures how widely an announcement has spread across the networks we can observe. It says nothing about whether the prefix is reachable from any particular place, or how it performs.

Registry and RPKI

RIR
APNIC — Asia-Pacific
Country
Australia
Allocated
2nd November 2017
Allocation block
103.103.76.0/22
Status
assigned
Origin validation
Valid

A ROA exists that authorises this origin AS to announce this prefix at this length.

ROAs covering this prefix

Route Origin Authorisations covering 103.103.78.0/23
ROA prefixAuthorised originMax length
103.103.76.0/22AS137057/23
103.103.76.0/22AS138657/24

Prefix hierarchy

Announcements above, below and beside this one in the real routing table.

CoveringMore specific
Prefix hierarchy for 103.103.78.0/23: the announcements covering it on the left, the announcements inside it on the right. Every prefix drawn is also listed in the tables below.103.103.76.0/22AS137057103.103.78.0/23AS137057This prefix103.103.76.0/23AS137057

Left to right is specificity: a shorter mask covering more address space, then this prefix, then the announcements carved out inside it. Only the first few of each are drawn — the tables below list them all.

Covering announcements

Announcements that contain 103.103.78.0/23
PrefixAddressesOriginVisibility
103.103.76.0/221kAS137057A.A. Company Pty Ltd80/80

More specific announcements

Nothing inside this block is announced separately.

Sibling prefixes

Prefixes of the same length sharing a parent block with 103.103.78.0/23
PrefixAddressesOriginVisibility
103.103.76.0/23512AS137057A.A. Company Pty Ltd80/80

History

  1. AS13705712th August 2026 present
Why these dates start where they do

A first-seen date is the first time we saw that origin, not the first time it appeared in BGP. Our history is forward-only with no backfill, so it says nothing about the period before we started collecting — treat the earliest dates with suspicion.

Open 103.103.78.0/23 in the calculator/23 reference

Routing data derived from RouteViews MRT archives and public registry data.