AS23309 Contra Costa County Office of Education

CCCOE-NET - Contra Costa County Office of Education · registered in the United States

IPv4 addresses65,7922 prefixes · 0.002% of announced IPv4

Rank in United States#933largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,756of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS23309 in ASN lookup Look up an IP in this network (137.164.103.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

137.164.103.0/24
169.199.0.0/16

IPv6 prefixes

All 1 prefix.

2607:fb78::/32

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ASNNameIPv4 addresses

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AS398846#935 LOGIS-AS-1 - Local Government Information Systems Association65,792

AS316#936 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)65,792

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources