SUBNET.IM

142.250.0.0/15

Google LLCAS15169

At a glance

Addresses

131,072

/15 block

Visibility

99%

79 of 80 vantage points

RPKI

Valid

Registry

ARINUS

Allocated 24th May 2012

AS paths to this prefix

All paths

One observed path, hop by hop, from the origin out to Oregon, US.

OriginVantage point · Oregon, US
One AS path to 142.250.0.0/15 as seen from Oregon, US, read outward from the origin: AS15169 → AS6939 → AS20130. Each hop is listed with its network name beneath the graph.AS15169Google LLCOriginAS6939Hurricane Electri…AS20130Depaul University

Seen from Oregon, US

  1. 1AS15169Google LLCUSOrigin
    Peer of AS15169seen on 10,521 paths from 23 vantage points
  2. 2AS6939Hurricane Electric LLCUS
    Peer of AS6939seen on 975,334 paths from 1 vantage point
  3. 3AS20130Depaul UniversityUSVantage point

One path, hop by hop, from the origin outward to the vantage point that saw it. Counts beside each step are how often we see that pair adjacent anywhere in the table, not how often this path was used — BGP carries no traffic figures.

Every path we see

  1. London, UK151698529This path
  2. Singapore15169132337This path
  3. Amsterdam15169214292213151This path
  4. Sao Paulo151693356266213This path
  5. Oregon, US15169693920130Shown above

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 79 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
ARIN — North America
Country
United States
Allocated
24th May 2012
Allocation block
142.250.0.0/15
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 142.250.0.0/15
ROA prefixAuthorised originMax length
142.250.0.0/15AS15169/15

Prefix hierarchy

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

CoveringMore specific
Prefix hierarchy for 142.250.0.0/15: the announcements covering it on the left, the announcements inside it on the right. Every prefix drawn is also listed in the tables below.142.250.0.0/15AS15169This prefix142.250.92.0/23AS15169142.250.0.0/24AS15169142.250.1.0/24AS15169142.250.2.0/24AS15169142.250.3.0/24AS15169+19 more

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

No less specific announcement covers this prefix.

Sibling prefixes

No prefix of the same length in the same parent block is announced.

History

  1. AS1516912th 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 142.250.0.0/15 in the calculator/15 reference

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