AS18558 · US — Riverside County Office of Education

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NETBLK-RCOEK · ARIN · US

Identity source

AS18558 ·

US Riverside County Office of Education

NRO allocation data

139IPv4 prefixes

1IPv6 prefixes

3Observed neighbors

RPKIValid: 0 Invalid: 0 Not found: 140 Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 00:00 UTC; routeviews2 11 Oct 02:00 UTC; routeviews6 11 Oct 02:00 UTC. Validator: 11 Oct 01:59 UTC. Publication-point issues: 89

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 71,936

IPv6 addresses: 79228162514264337593543950336

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Observed originated prefixes

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

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

Prefix	RPKI	Last observed	Details
204.100.76.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.77.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.78.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.79.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.80.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.81.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.82.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.87.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.88.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.89.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.90.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.91.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.92.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.93.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.94.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.97.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.98.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.99.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.103.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.105.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.106.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.114.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.115.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.116.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
204.100.117.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found

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Observed AS neighbors

3 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.

3 matching neighbors · 1–3 shown

Network	IPv4/IPv6	Seen in	Last observed	Details
AS2152 · US CENIC	IPv4	ris-rrc00, routeviews2	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS395643 · US Corona-Norco Unified School District	IPv4	ris-rrc00, routeviews2	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS401974 · US VVUSD-157-233 - Val Verde Unified School District	IPv4	ris-rrc00, routeviews2	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC

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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 3 of 3 matching neighbors, in table sort order, independent of table page.

Peering & locations

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Registry information

ARIN · fetched 11 Oct 00:27 UTC

Resource name: NETBLK-RCOEK
Handle: AS18558
RDAP country: Not supplied
ASN: 18558

Registered organizations

Riverside County Office of Education

Last Changed: 20 Oct 2025 23:35 UTC

Registration: 12 Sep 2000 04:00 UTC

Registry contacts and maintainers

ELLIS608-ARIN · technical
WILKI325-ARIN · abuse, noc, technical

Official registry record

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.

AS18558–AS18558 · arin · assigned · ASN allocation country: US · Allocation date: 2000-09-12 — NRO/RIR data · snapshot 10 Oct 00:00 UTC

NRO data and format

Prefix count history

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.

Source	Snapshot	Family	Prefixes	Peer coverage
routeviews2	11 Oct 02:00 UTC	IPv4	139	140.192.8.16/IPv4
routeviews6	11 Oct 02:00 UTC	IPv6	1	2406:840:feed:2::1/IPv6
routeviews2	11 Oct 00:00 UTC	IPv4	139	140.192.8.16/IPv4
ris-rrc00	11 Oct 00:00 UTC	IPv6	1	2a00:5884::6/IPv6, 89.234.186.6/IPv4
routeviews6	11 Oct 00:00 UTC	IPv6	1	2406:840:feed:2::1/IPv6
ris-rrc00	11 Oct 00:00 UTC	IPv4	139	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	10 Oct 16:00 UTC	IPv4	139	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	10 Oct 16:00 UTC	IPv6	1	2a00:5884::6/IPv6, 89.234.186.6/IPv4