AS2152 — CENIC-2152 - CENIC

AS2152 announces 714 IPv4 prefixes covering 1,916,161 addresses and 479 IPv6 prefixes.

About this network

CENIC-2152 belongs to the Corporation for Education Network Initiatives in California, which operates CalREN, the research and education network serving California's schools, colleges, universities, and libraries.

What it's used for

• A high-capacity backbone connecting the University of California, California State University, community colleges, K-12 districts, and research institutions.

Notable

• An education and research network, not a commercial ISP. It announces a very large IPv4 footprint on behalf of its many member institutions.

Interesting

• The low AS number reflects an early allocation to one of the United States' major regional research networks.

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

Announced prefixes

• 64.39.112.0/20
• 69.48.214.0/23
• 76.78.96.0/21
• 76.78.124.0/23
• 104.249.91.0/24
• 104.249.94.0/24
• 130.65.0.0/16
• 130.86.2.0/23
• 130.150.0.0/21
• 130.150.14.0/23
• 130.150.16.0/20
• 130.150.32.0/19
• 130.150.96.0/19
• 130.150.128.0/18
• 130.150.192.0/21
• 130.150.208.0/20
• 130.150.224.0/20
• 130.150.244.0/22
• 130.150.248.0/21
• 130.157.0.0/16
• 130.166.0.0/16
• 130.182.0.0/16
• 130.191.0.0/19
• 130.191.32.0/20
• 130.191.48.0/24
• 130.191.50.0/23
• 130.191.52.0/22
• 130.191.56.0/21
• 130.191.64.0/19
• 130.191.96.0/22
• 130.191.100.0/23
• 130.191.102.0/24
• 130.191.104.0/21
• 130.191.112.0/20
• 130.191.128.0/17
• 130.212.0.0/18
• 130.212.64.0/19
• 130.212.96.0/20
• 130.212.128.0/17
• 132.241.0.0/16
• 134.139.0.0/20
• 134.139.16.0/23
• 134.139.18.0/24
• 134.139.19.0/27
• 134.139.19.32/28
• 134.139.19.48/30
• 134.139.19.52/32
• 134.139.19.54/31
• 134.139.19.56/29
• 134.139.19.64/26
• 134.139.19.128/25
• 134.139.20.0/22
• 134.139.24.0/21
• 134.139.32.0/19
• 134.139.64.0/18
• 134.139.128.0/17
• 134.154.0.0/16
• 136.168.0.0/17
• 136.168.128.0/18
• 136.168.192.0/19
• 136.168.224.0/21
• 136.168.232.0/22
• 136.168.236.0/23
• 136.168.239.0/24
• 136.168.242.0/23
• 136.168.244.0/22
• 136.168.248.0/21
• 136.228.176.0/24
• 137.145.0.0/16
• 137.150.0.0/17
• 137.150.128.0/21
• 137.150.136.0/24
• 137.150.138.0/23
• 137.150.140.0/22
• 137.150.144.0/20
• 137.150.160.0/19
• 137.150.192.0/18
• 137.151.0.0/16
• 137.164.0.0/24
• 137.164.1.0/26
• 137.164.1.64/27
• 137.164.1.96/29
• 137.164.1.104/30
• 137.164.1.108/31
• 137.164.1.112/28
• 137.164.1.128/28
• 137.164.1.146/31
• 137.164.1.148/30
• 137.164.1.152/29
• 137.164.1.160/27
• 137.164.1.192/27
• 137.164.1.224/29
• 137.164.1.232/30
• 137.164.1.240/28
• 137.164.2.0/24
• 137.164.3.0/28
• 137.164.3.18/31
• 137.164.3.20/30
• 137.164.3.24/31
• 137.164.3.28/30

and 1,093 more.

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS2153 CENIC
• AS6939 Hurricane Electric LLC
• AS6461 Zayo Bandwidth
• AS11164 Internet2
• AS396450 Internet2

Downstream networks

• AS2920 Los Angeles County Office of Education
• AS18558 Riverside County Office of Education
• AS16509 Amazon.com, Inc.
• AS22315 San Bernardino County Superintendent of Schools
• AS23024 Orange County Department of Education
• AS8151 UNINET
• AS54179 Ventura County Office of Education
• AS395226 Sacramento County Office of Education
• AS13335 Cloudflare, Inc.
• AS20115 Charter Communications LLC
• AS11404 Wave Broadband
• AS714 Apple Inc.
• AS8075 Microsoft Corporation
• AS395148 PACIFIC LIGHTWAVE, A CALIFORNIA CORPORATION
• AS10867 Foothill-DeAnza Community College District
• AS195 San Diego Supercomputer Center
• AS7377 University of California, San Diego
• AS15169 Google LLC
• AS3356 Level 3 Parent, LLC
• AS3786 LG DACOM Corporation
• AS25 University of California at Berkeley
• AS6099 Alameda County Office of Education
• AS23117 Imperial County Office of Education
• AS11293 University of California - Office of the President
• AS3734 Santa Clara County Office of Education

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS11164 Internet2
• AS6461 Zayo Bandwidth
• AS6939 Hurricane Electric LLC
• AS2153 CENIC
• AS2920 Los Angeles County Office of Education
• AS7922 Comcast Cable Communications, LLC
• AS18558 Riverside County Office of Education
• AS13335 Cloudflare, Inc.
• AS3786 LG DACOM Corporation
• AS16509 Amazon.com, Inc.
• AS7843 Charter Communications Inc
• AS8220 COLT Technology Services Group Limited
• AS15169 Google LLC
• AS2516 KDDI CORPORATION
• AS22315 San Bernardino County Superintendent of Schools
• AS8151 UNINET
• AS23024 Orange County Department of Education
• AS54179 Ventura County Office of Education
• AS567 Los Nettos
• AS395226 Sacramento County Office of Education
• AS11404 Wave Broadband
• AS20115 Charter Communications LLC
• AS195 San Diego Supercomputer Center
• AS1828 Unitas Global

Routing security

• RPKI: 27 valid, 0 invalid and 750 not-found announcements; 41 ROAs.
• ASPA: none published.
• IRR: 14% of announcements registered; 199 route objects.
• Listed in as-sets: AS-ANY2-RS, AS-BTN-CUSTOMERS, AS-CALREN2, AS-COMCAST-EDIA, AS-COX-CALIFORNIA, AS-CVIN, AS-HURRICANEV6, AS-LIMELIGHT-CUST, AS-MEGAPORT-RS-LAX, AS-NORDUNET, AS-OUSD-PEERS, AS-OUSD-PEERS, AS-RR-BIZ, AS-TMNET-PEERS, AS-XO-P, AS198949:AS-SD, AS23483:AS-PEERS, AS23483:AS-PEERS, AS293:AS-FROM-SINGAREN-TO-ESNET, AS395148:AS-TRANSIT, AS7575:AS-PEER, AS9033:AS-MEGAPORT-RS-SJC.

Internet exchanges

• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States
• Equinix Internet Exchange Los Angeles — Los Angeles, United States
• Equinix Internet Exchange Palo Alto — Palo Alto, United States
• Equinix Los Angeles IBX — Los Angeles, United States
• Equinix IBX Secaucus — Secaucus, United States
• Megaport IX Los Angeles — Los Angeles, United States