AS18558 — NETBLK-RCOEK

AS18558 announces 9 IPv4 prefixes covering 72,204 addresses and 5 IPv6 prefixes.

About this network

NETBLK-RCOEK is operated by Riverside County Office of Education.

What it's used for

• The address space carries educational infrastructure, evidenced by netnames like RCOEK-12NET and ALVORDNET, and reverse DNS entries such as nat-block.banning.k12.ca.us and nat.murrieta.k12.ca.us.
• The AS announces 72202 IPv4 addresses across 123 prefixes and 4 IPv6 prefixes, while maintaining only 3 observed neighbours, a ratio indicative of an access network serving local districts rather than a transit provider.

Notable

• Registrants include County of Riverside and Alvord Unified School District, aligning with the announcer's identity as a county-level educational body supporting multiple districts.
• The inventory is finely subdivided into numerous /20, /21, and /22 blocks, reflecting site-by-site segmentation for individual schools or district offices within the county.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 137.164.1.110/31
• 137.164.1.236/30
• 137.164.3.16/31
• 137.164.13.36/30
• 198.188.95.0/24
• 204.26.32.0/20
• 204.26.48.0/21
• 204.26.56.0/24
• 204.100.0.0/16
• 2607:f380::118:9a40:16e0/123
• 2607:f380::118:9a40:1ec0/122
• 2607:f380::118:9a40:d240/122
• 2607:f380:1::118:9a40:3100/123
• 2607:f708::/32

Upstream networks

• AS2152 CENIC

Downstream networks

• AS395643 Corona-Norco Unified School District
• AS401974 Val Verde Unified School District

Adjacent networks

• AS2152 CENIC
• AS395643 Corona-Norco Unified School District
• AS401974 Val Verde Unified School District