Autonomous system detail

AS1663

Not announced

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

Summary

// analyst note
Combined routing observation from route-views2 and route-views6 at 2026-11-06 20:00 UTC recorded zero IPv4 prefixes, zero IPv6 prefixes, zero estimated IPv4 addresses, and zero observed AS_PATH neighbours. This single snapshot does not establish inactivity or safety.
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

AS1663 is an ASN with an unknown operator; it had no IPv4 or IPv6 prefixes observed in the combined Route Views snapshot at 2026-11-06 20:00 UTC. That snapshot combines route-views2 and route-views6 observations. It does not establish that the ASN is dormant, inactive, or unused outside those collectors and that timestamp.

IANA places AS1663 in the resource block described as “Assigned by ARIN,” identifying ARIN as the allocating RIR. This block-level record does not identify an individual assignment, operator, country, or network purpose. No first-party identity or organizational evidence is supplied, so those details remain unknown.

For triage, treat the zero counts as a snapshot observation rather than a safety or reputation signal. When investigating a specific address or incident, compare its origin and route history at the relevant time, check other collectors and current routing data, and seek an independently verified operator record. The empty observed-neighbour sample provides no basis for inferring upstreams or commercial relationships.

Identity
Operator and network purpose are unknown from the supplied evidence.
Routing snapshot
Zero IPv4 prefixes, zero IPv6 prefixes, zero estimated IPv4 addresses, and zero observed AS_PATH neighbours in the combined observation at 2026-11-06 20:00 UTC across route-views2 and route-views6.
Triage
The snapshot does not establish inactivity, safety, malicious use, or ownership; investigate time-relevant routes and independently verified identity evidence.
Operator
Unknown [Unknown]
AS name
Unknown [Unknown]
Country
Unknown [Unknown]
Website
Unknown [Unknown]

Network & routing

Network type
Unknown [Unknown]
ASN
1663 [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]
Assignment class
Unknown [Unknown]
IPv4 prefixes observed
0 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261106.2000.bz2
IPv4 address estimate
0 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261106.2000.bz2
IPv6 prefixes observed
0 [Confirmed] — https://archive.routeviews.org/route-views6/bgpdata/2026.11/RIBS/rib.20261106.2000.bz2
Observed AS_PATH neighbours
0; sample empty [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261106.2000.bz2
Observation time and scope
2026-11-06 20:00 UTC; combined across route-views2 and route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261106.2000.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.