subnet.im

66.193.23.0/24

Upstate Niagara CooperativesAS400057

Level 3 Parent, LLCAS10753

Announced by more than one origin AS (MOAS).

At a glance

Addresses

256

/24 block

Visibility

54%

43 of 80 vantage points

RPKI

No ROA

Registry

ARINUS

Allocated 25th October 2001

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 66.193.23.0/24, fanning out from AS10753, AS400057 toward the vantage points that see it. Each path is written out in full beneath the graph.AS10753Level 3 Parent, L…OriginAS3356Lumen (Level 3)AS8529Zain Omantel Inte…AS266213PLANETCLICK TELEC…AS400057Upstate Niagara C…OriginAS11351Charter Communica…AS7843Charter Communica…AS6939Hurricane Electri…AS213151Christian ElsenAS132337AxclusiveAS20130Depaul University
  1. London, UK1075333568529This path
  2. Sao Paulo107533356266213This path
  3. Amsterdam4000571135178436939213151This path
  4. Singapore4000571135178436939132337This path
  5. Oregon, US400057113517843693920130This 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

54%

Seen by 43 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
ARIN — North America
Country
United States
Allocated
25th October 2001
Allocation block
66.192.0.0/14
Status
allocated
Origin validation
No ROA

No ROA covers this prefix, so RPKI has nothing to say about it either way. This is still the common case for a large share of the routing table.

Prefix hierarchy

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

CoveringMore specific
Prefix hierarchy for 66.193.23.0/24: the announcements covering it on the left, the announcements inside it on the right. Every prefix drawn is also listed in the tables below.66.192.0.0/14AS354966.193.23.0/24AS400057This prefix

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 66.193.23.0/24
PrefixAddressesOriginVisibility
66.192.0.0/14262kAS3549Lumen (fka. Global Crossing)79/80

More specific announcements

Nothing inside this block is announced separately.

Sibling prefixes

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

History

  1. AS40005712th August 2026 — present
  2. AS1075312th 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 66.193.23.0/24 in the calculator/24 reference

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