SUBNET.IM

217.11.208.0/20

NTS workspace AGAS15576

At a glance

Addresses

4,096

/20 block

Visibility

98%

78 of 80 vantage points

RPKI

Valid

Registry

RIPE NCCCH

Allocated 20th January 2009

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 217.11.208.0/20, fanning out from AS15576 toward the vantage points that see it. Each path is written out in full beneath the graph.AS15576NTS workspace AGOriginAS132337AxclusiveAS8220COLTAS8529Zain Omantel Inte…AS6939Hurricane Electri…AS20130Depaul UniversityAS174Cogent Communicat…AS34549meerfarbig GmbH &…AS213151Christian ElsenAS3356Lumen (Level 3)AS266213PLANETCLICK TELEC…
  1. Singapore15576132337This path
  2. London, UK1557682208529This path
  3. Oregon, US15576693920130This path
  4. Amsterdam1557617434549213151This path
  5. Sao Paulo1557682203356266213This 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

98%

Seen by 78 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
RIPE NCC — Europe, Middle East, Central Asia
Country
Switzerland
Allocated
20th January 2009
Allocation block
217.11.208.0/20
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 217.11.208.0/20
ROA prefixAuthorised originMax length
217.11.208.0/20AS15576/20

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 217.11.208.0/20
PrefixAddressesOriginVisibility
217.11.192.0/204.1kAS15613FactSet GmbH79/80

History

  1. AS1557612th 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 217.11.208.0/20 in the calculator/20 reference

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