SUBNET.IM

170.231.131.0/24

At a glance

Addresses

256

/24 block

Visibility

23%

18 of 80 vantage points

RPKI

Valid

Registry

LACNICBR

Allocated 29th June 2016

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. Sao Paulo2818228191266213This path
  2. Singapore2818228191132337This path
  3. London, UK28182281911374098529This path
  4. Oregon, US2818228191273431693920130This path
  5. Amsterdam281822819127343169395829941051213151This 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

23%

Seen by 18 of 80 full-feed vantage points

Seen by few vantage points

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
LACNIC — Latin America and the Caribbean
Country
Brazil
Allocated
29th June 2016
Allocation block
170.231.128.0/22
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 170.231.131.0/24
ROA prefixAuthorised originMax length
170.231.131.0/24AS28182/24
170.231.130.0/23AS28182/23
170.231.128.0/22AS28182/22

Prefix hierarchy

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

CoveringMore specific
Prefix hierarchy for 170.231.131.0/24: the announcements covering it on the left, the announcements inside it on the right. Every prefix drawn is also listed in the tables below.170.231.130.0/23AS28182170.231.128.0/22AS28182170.231.131.0/24AS28182This prefix170.231.130.0/24AS28182

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 170.231.131.0/24
PrefixAddressesOriginVisibility
170.231.130.0/23512AS28182JUPITER PROVEDOR DE INTERNET LTDA79/80
170.231.128.0/221kAS28182JUPITER PROVEDOR DE INTERNET LTDA79/80

More specific announcements

Nothing inside this block is announced separately.

Sibling prefixes

Prefixes of the same length sharing a parent block with 170.231.131.0/24
PrefixAddressesOriginVisibility
170.231.130.0/24256AS28182JUPITER PROVEDOR DE INTERNET LTDA18/80

History

  1. AS2818212th 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 170.231.131.0/24 in the calculator/24 reference

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