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AS4 · Registration country: US US — University of Southern California

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ISI-AS · ARIN · Registration country: US US

Identity sourceAS4 · Registration country: US US University of Southern California

NRO allocation data

40IPv4 prefixes
8IPv6 prefixes
5Observed neighbors
RPKIValid: 1Invalid: 0Not found: 47Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 10 Oct 16:00 UTC; routeviews2 10 Oct 20:00 UTC; routeviews6 10 Oct 20:00 UTC. Validator: 10 Oct 21:54 UTC. Publication-point issues: 87

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 65,024

IPv6 addresses: 158462369657626748332961431552

Loading public source data…

Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

Advanced filters

47 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

PrefixRPKILast observedDetails
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
10 Oct 20:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-10T16:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-10T20:00:00+00:00 · 1 selected peers · RPKI not_found

Next rows

Export observed prefixes: TXT · CSV · JSON

Observed AS neighbors

5 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.

5 matching neighbors · 1–5 shown

NetworkIPv4/IPv6Seen inLast observedDetails
AS174 · Registration country: US US Cogent Communications, LLC
IPv4
ris-rrc00, routeviews2
10 Oct 20:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 10 Oct 16:00 UTC
  • routeviews2 · IPv4 · 10 Oct 20:00 UTC
AS226 · Registration country: US US LOS-NETTOS-AS - Los Nettos
IPv4
ris-rrc00, routeviews2
10 Oct 20:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 10 Oct 16:00 UTC
  • routeviews2 · IPv4 · 10 Oct 20:00 UTC
AS567 · Registration country: US US ASN-LNET-AS - Los Nettos
IPv4, IPv6
ris-rrc00, routeviews2, routeviews6
10 Oct 20:00 UTC
Source observations
  • routeviews2 · IPv4 · 10 Oct 20:00 UTC
  • ris-rrc00 · IPv6 · 10 Oct 16:00 UTC
  • routeviews6 · IPv6 · 10 Oct 20:00 UTC
AS10886 · Registration country: US US MAX-GIGAPOP - University of Maryland
IPv4
ris-rrc00, routeviews2
10 Oct 20:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 10 Oct 16:00 UTC
  • routeviews2 · IPv4 · 10 Oct 20:00 UTC
AS266625 · Registration country: BR BR WCA TELECOM
IPv6
ris-rrc00
10 Oct 16:00 UTC
Source observations
  • ris-rrc00 · IPv6 · 10 Oct 16:00 UTC

Clear neighbor filters

View observed neighbor graph (up to 15 AS nodes)

Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.

Showing 5 of 5 matching neighbors, in table sort order, independent of table page.

AS4AS174AS226AS567AS10886AS266625

Peering & locations

Loading public source data…

Registry information

ARIN · fetched 10 Oct 21:05 UTC

Resource name
ISI-AS
Handle
AS4
RDAP country
Not supplied
ASN
4

Registered organizations

Last Changed: 29 Sep 2023 08:49 UTC

Registration: 22 Feb 1984 05:00 UTC

Registry source

Allocation statistics

NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.

NRO data and format

Prefix count history

Uses the public RIPEstat Data API when requested.

Local observation changes

Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.

No retained changes are available for this resource.

Retained local prefix-count observations

Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.

SourceSnapshotFamilyPrefixesPeer coverage
routeviews2
10 Oct 20:00 UTC
IPv4
40
140.192.8.16/IPv4
routeviews6
10 Oct 20:00 UTC
IPv6
7
2406:840:feed:2::1/IPv6
routeviews2
10 Oct 18:00 UTC
IPv4
40
140.192.8.16/IPv4
routeviews6
10 Oct 18:00 UTC
IPv6
7
2406:840:feed:2::1/IPv6
ris-rrc00
10 Oct 16:00 UTC
IPv4
40
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
10 Oct 16:00 UTC
IPv6
8
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
10 Oct 08:00 UTC
IPv4
40
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
10 Oct 08:00 UTC
IPv6
8
2a00:5884::6/IPv6, 89.234.186.6/IPv4