subnet.im

131.123.33.0/24

ALEXHOST SRLAS200019

At a glance

Addresses

256

/24 block

Visibility

99%

80 of 81 vantage points

RPKI

Valid

Registry

RIPE NCCMD

Allocated 17th November 1988

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.

OriginVantage points
AS path graph: 5 observed paths to 131.123.33.0/24, fanning out from AS200019 toward the vantage points that see it. Each path is written out in full beneath the graph.AS200019ALEXHOST SRLOriginAS174Cogent Communicat…AS132337AxclusiveAS1299Arelion (fka. Tel…AS35280F5 Networks SARLAS6453TATA Communicatio…AS35280F5 Networks SARLAS6762Telecom Italia Sp…AS25091IP-Max SAAS8298IPng Networks GmbHAS6939Hurricane Electri…AS20130Depaul University
  1. Singapore200019174132337This path
  2. London, UK200019174129935280This path
  3. Sao Paulo200019174645335280This path
  4. Amsterdam2000191746762250918298This path
  5. Oregon, US2000191741299693920130This 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

99%

Seen by 80 of 81 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
RIPE NCC — Europe, Middle East, Central Asia
Country
Moldova
Allocated
17th November 1988
Allocation block
131.123.32.0/19
Status
allocated
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 131.123.33.0/24
ROA prefixAuthorised originMax length
131.123.33.0/24AS200019/24
131.123.32.0/19AS200019/24

Prefix hierarchy

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

Covering announcements

No less specific announcement covers this prefix.

More specific announcements

Nothing inside this block is announced separately.

Sibling prefixes

Prefixes of the same length sharing a parent block with 131.123.33.0/24
PrefixAddressesOriginVisibility
131.123.32.0/24256AS200019ALEXHOST SRL81/81

History

  1. AS20001922nd September 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 131.123.33.0/24 in the calculator/24 reference

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