Autonomous system detail

AS1503

Not announced

No prefixes for this AS number were observed in the RouteViews RIB.

Summary

// analyst note
The combined Route Views observation at 2026-11-03 14:00 UTC across route-views2 and route-views6 contained no prefixes or AS_PATH neighbours; this does not establish inactivity.
IPv4 prefixes
0
~0 addresses
IPv6 prefixes
0
—
Peer networks
0
0 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: Low  ·  3 sources  ·  How this page is checked

AS1503 is an ASN whose operator and registered name are unknown from the supplied evidence. In the combined Route Views observation at 2026-11-03 14:00 UTC, no IPv4 or IPv6 prefixes and no AS_PATH neighbours were observed across route-views2 and route-views6. This is a snapshot finding; it does not establish that the ASN is inactive or unassigned.

The IANA ASN range data identifies AS1503 within resource range 1–1876 as assigned by ARIN. This names the allocating regional registry only; the supplied record does not identify an organization, country, network type, or website for this ASN. The registry range entry is not evidence of a specific assignment record or deployed network.

For investigation, compare later routing snapshots and consult an authoritative ASN registration record to identify any organization explicitly linked to AS1503. If a route appears later, inspect its origin and AS_PATH in that observation before drawing conclusions about reachability or relationships. The zero counts and empty neighbour sample here support only the stated snapshot scope; they provide no evidence about traffic, prevalence, security, or legitimacy.

Identity
Operator, country, and network type are Unknown from the supplied evidence.
Triage
Treat the zero route counts as a time-bounded observation; check later snapshots and an authoritative ASN record for identification.
Operator
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
AS name
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
Website
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

Network & routing

Network type
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Observation scope
combined RouteViews snapshot at 2026-11-03T14:00:00.000Z; route-views2, route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
ASN
1503 [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
Organization status
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
IPv4 prefixes observed
0 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv6 prefixes observed
0 [Confirmed] — https://archive.routeviews.org/route-views6/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
AS_PATH neighbours observed
0; sample empty [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
[ 02 ] — Announced prefixes

What this network routes.

0 prefixes total · as observed by RouteViews at 2026-11-06 · one collector view, not a global census
// IPv4 prefixes0
No IPv4 prefixes announced.
// IPv6 prefixes0
No IPv6 prefixes announced.
[ 03 ] — Notable peers & upstreams

Who it talks to.

0 observed neighbours
Neighbour data unavailable from public BGP collectors.