AS1543

AS1543 is an ASN with an unknown operator and no IPv4 or IPv6 prefixes observed in the combined Route Views snapshot at 2026-11-06 20:00 UTC. This is a point-in-time routing observation from route-views2 and route-views6; it does not establish that the ASN is dormant or inactive.

IANA places AS1543 in the resource block 1–1876, described as assigned by ARIN, so ARIN is the allocating RIR for that block. This block-level designation does not identify an individual assignment holder, operator, country, or service. No first-party evidence linking an organization or product to AS1543 is supplied.

The combined snapshot records zero observed peers and no AS_PATH neighbour sample. These results describe only the supplied collectors and timestamp; they do not establish commercial relationships or safety. For identification, compare this ASN with a dated registry assignment record and first-party documentation that explicitly names AS1543. For a routing investigation, check additional collectors and later snapshots for announcements, then verify any discovered origin and paths independently.

Routing snapshot

Zero IPv4 prefixes, IPv6 prefixes, estimated IPv4 addresses, and observed AS_PATH neighbours in the combined Route Views observation at 2026-11-06 20:00 UTC.

Triage

Operator and purpose are unknown; the snapshot does not establish dormancy, inactivity, or safety.

Investigation

Seek an individual registry assignment and first-party documentation naming AS1543; compare additional collectors and later snapshots for routing changes.

Operator

Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

Country

Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

ASN

1543 [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

Allocating RIR

ARIN [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

IANA resource block

1–1876 [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

Combined routing observation

0 IPv4 prefixes, 0 IPv6 prefixes, 0 estimated IPv4 addresses, 0 observed peers; empty neighbour sample [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261106.2000.bz2

Observation time and collectors

2026-11-06 20:00 UTC; route-views2 and route-views6 combined [Confirmed] — https://archive.routeviews.org/route-views6/bgpdata/2026.11/RIBS/rib.20261106.2000.bz2