SUBNET.IM

45.57.40.0/23

Netflix Streaming Services Inc.AS40027

At a glance

Addresses

512

/23 block

Visibility

96%

77 of 80 vantage points

RPKI

Valid

Registry

ARINUS

Allocated 9th January 2015

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 45.57.40.0/23, fanning out from AS40027 toward the vantage points that see it. Each path is written out in full beneath the graph.AS40027Netflix Streaming…OriginAS2906Netflix Streaming…AS213151Christian ElsenAS8529Zain Omantel Inte…AS266213PLANETCLICK TELEC…AS132337AxclusiveAS6939Hurricane Electri…AS20130Depaul University
  1. Amsterdam400272906213151This path
  2. London, UK4002729068529This path
  3. Sao Paulo400272906266213This path
  4. Singapore400272906132337This path
  5. Oregon, US400272906693920130This 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

96%

Seen by 77 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
9th January 2015
Allocation block
45.57.0.0/17
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 45.57.40.0/23
ROA prefixAuthorised originMax length
45.57.0.0/17AS2906/24
45.57.0.0/17AS40027/24

Prefix hierarchy

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

CoveringMore specific
Prefix hierarchy for 45.57.40.0/23: the announcements covering it on the left, the announcements inside it on the right. Every prefix drawn is also listed in the tables below.45.57.0.0/17AS290645.57.40.0/23AS40027This prefix45.57.40.0/24AS4002745.57.41.0/24AS40027

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 45.57.40.0/23
PrefixAddressesOriginVisibility
45.57.0.0/1732.8kAS2906Netflix Streaming Services Inc.79/80

More specific announcements

Announcements contained within 45.57.40.0/23
PrefixAddressesOriginVisibility
45.57.40.0/24256AS40027Netflix Streaming Services Inc.76/80
45.57.41.0/24256AS40027Netflix Streaming Services Inc.77/80

Sibling prefixes

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

History

  1. AS4002712th 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 45.57.40.0/23 in the calculator/23 reference

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