AS21708 San Diego County Office of Education

SDCOE - San Diego County Office of Education · registered in the United States

IPv4 addresses8,45626 prefixes · <0.001% of announced IPv4

Rank in United States#3,183largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#9,988of 79,396 networks with IPv4

IPv632 addresses (smaller than a /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS21708 in ASN lookup Look up an IP in this network (137.164.12.5) All networks in United States

IPv4 prefixes

All 26 prefixes, in address order.

137.164.12.4/30
137.164.35.68/31
137.164.38.64/31
198.133.204.0/24
209.66.192.0/25
209.66.192.128/26
209.66.192.192/27
209.66.192.224/28
209.66.192.240/29
209.66.192.248/29
209.66.193.0/24
209.66.194.0/23
209.66.196.0/24
209.66.197.0/25
209.66.197.128/26
209.66.197.192/26
209.66.198.0/24
209.66.199.0/26
209.66.199.64/26
209.66.199.128/25
209.66.200.0/21
209.66.208.0/24
209.66.209.0/24
209.66.210.0/23
209.66.212.0/22
209.66.216.0/21

IPv6 prefixes

All 1 prefix.

2607:f380:1::118:9a42:6400/123

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AS398816#3186 FLUME-01 - Flume8,448

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