Autonomous system detail

AS1123

Not announced

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

Summary

// analyst note
Combined Route Views observation across route-views2 and route-views6 at 2026-11-03T14:00:00Z; zero prefixes and zero AS_PATH neighbours observed. This does not establish inactivity or operator identity.
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

AS1123 is an ASN in the IANA block assigned by ARIN; the supplied evidence does not identify an operator, and the combined routing snapshot observed no announced prefixes or AS_PATH neighbours. This is a snapshot finding, not proof that the ASN is unused or inactive.

At 2026-11-03 14:00 UTC, the combined Route Views observation across route-views2 and route-views6 contained zero IPv4 prefixes, zero IPv6 prefixes, zero estimated IPv4 addresses, and zero peers. The peer sample is empty. No neighbours were observed from which to assess routing adjacencies.

For identification, treat AS1123 as unverified from these materials: the IANA block entry establishes only the allocating RIR, not an individual assignment record or present-day operator. If investigating a specific address or service, compare its observed origin ASN and prefix against timestamped BGP data from additional collectors, then seek an authoritative registry or first-party statement explicitly connecting the organization to AS1123. A matching name alone would not establish that connection.

Identity
IANA lists AS1123 within a block assigned by ARIN; an operator is Unknown.
Routing snapshot
Zero IPv4 and IPv6 prefixes and zero AS_PATH neighbours were observed in the combined Route Views snapshot at 2026-11-03 14:00 UTC.
Triage
Absence from this snapshot does not establish inactivity, safety, or legitimacy; verify any suspected origin with additional timestamped routing evidence.
AS name
Unknown [Unknown]
Operator
Unknown [Unknown]
Country
Unknown [Unknown]
Allocated date
Unknown [Unknown]
Website
Unknown [Unknown]

Security context

No security findings supplied [Unknown]

Network & routing

Network type
Unknown [Unknown]
AS rank
Unknown [Unknown]
Customer cone size
Unknown [Unknown]
Upstreams
Unknown [Unknown]
IX presence
Unknown [Unknown]
Peering policy
Unknown [Unknown]
RPKI status
Unknown [Unknown]
Geo footprint
Unknown [Unknown]
Related ASNs
Unknown [Unknown]
Notable usage
Unknown [Unknown]
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
1123 [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
Assignment class
Unknown [Unknown]
Last updated
Unknown [Unknown]
IPv4 prefix count
0 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv4 address estimate
0 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv6 prefix count
0 [Confirmed] — https://archive.routeviews.org/route-views6/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
AS_PATH neighbour count
0 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
AS_PATH neighbour sample
None observed [Confirmed] — https://archive.routeviews.org/route-views6/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
Organization status
Unknown [Unknown]
Analyst note
The routing counts are a combined observation across route-views2 and route-views6, not separate per-collector counts. Neighbours, if present, would represent AS_PATH adjacencies rather than verified commercial peers or upstreams.
[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.