subnet.im

185.255.204.0/22

At a glance

Addresses

1,024

/22 block

Visibility

79%

63 of 80 vantage points

RPKI

Valid

Registry

RIPE NCCOM

Allocated 16th April 2018

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 185.255.204.0/22, fanning out from AS28885, AS202655 toward the vantage points that see it. Each path is written out in full beneath the graph.AS202655Ministry of Educa…OriginAS28885Oman Telecommunic…AS8529Zain Omantel Inte…AS28885Oman Telecommunic…OriginAS8529Zain Omantel Inte…AS137409GSL Networks Pty …AS266213PLANETCLICK TELEC…AS132337AxclusiveAS6939Hurricane Electri…AS213151Christian ElsenAS20130Depaul University
  1. London, UK202655288858529This path
  2. Sao Paulo288858529137409266213This path
  3. Singapore202655288858529132337This path
  4. Amsterdam2026552888585296939213151This path
  5. Oregon, US202655288858529693920130This 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

79%

Seen by 63 of 80 full-feed vantage points

Partially propagated

Observed at 4 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
Oman
Allocated
16th April 2018
Allocation block
185.255.204.0/22
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 185.255.204.0/22
ROA prefixAuthorised originMax length
185.255.204.0/22AS202655/22
185.255.204.0/22AS28885/22

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 185.255.204.0/22
PrefixAddressesOriginVisibility
185.255.200.0/221kAS197518Rackmarkt SL80/80

History

  1. AS20265512th August 2026 present
  2. AS2888512th 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 185.255.204.0/22 in the calculator/22 reference

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