subnet.im

143.203.217.0/24

Not announced at this prefix length

We do not see 143.203.217.0/24 announced as its own route. The most specific announcement covering it is 143.203.216.0/22, originated by AS51082 (SPUZE LLC). Traffic to addresses in this block follows that route.

At a glance

Addresses

256

/24 block

Visibility

Unknown

RPKI

Unknown

Registry

ARINUS

Allocated 2nd October 2026

AS paths to this prefix

No AS paths are stored for this prefix. We keep the full path from one reference peer per collector rather than from every peer, so a prefix only has paths here once it has been seen by one of those peers.

Registry and RPKI

RIR
ARIN — North America
Country
United States
Allocated
2nd October 2026
Allocation block
143.203.216.0/22
Status
allocated
Origin validation
Unknown

ROAs covering this prefix

Route Origin Authorisations covering 143.203.217.0/24
ROA prefixAuthorised originMax length
143.203.217.0/24AS198661/24
143.203.216.0/22AS402695/24
143.203.216.0/22AS51082/24

Prefix hierarchy

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

CoveringMore specific
Prefix hierarchy for 143.203.217.0/24: the announcements covering it on the left, the announcements inside it on the right. Every prefix drawn is also listed in the tables below.143.203.216.0/22AS51082143.203.217.0/24This prefix143.203.216.0/24AS29802

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 143.203.217.0/24
PrefixAddressesOriginVisibility
143.203.216.0/221kAS51082SPUZE LLC76/76

More specific announcements

Nothing inside this block is announced separately.

Sibling prefixes

Prefixes of the same length sharing a parent block with 143.203.217.0/24
PrefixAddressesOriginVisibility
143.203.216.0/24256AS29802HIVELOCITY, Inc.76/76

History

  1. AS19866130th October 2026 — 31st October 2026
  2. AS19866125th October 2026 — 29th October 2026
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 143.203.217.0/24 in the calculator/24 reference

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