AS395323 County of San Mateo

SMC - County of San Mateo · registered in the United States

IPv4 addresses8,1921 prefixes · <0.001% of announced IPv4

Rank in United States#3,434largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#10,898of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS395323 in ASN lookup Look up an IP in this network (204.114.32.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

204.114.32.0/19

Similar-sized networks in United States

ASNNameIPv4 addresses

AS394475#3431 MCECFIBER-A01 - MCEC Fiber, Inc.8,192

AS394744#3432 RMC-ASN1 - Randolph-Macon College8,192

AS394762#3433 DSUSD-AS1 - Desert Sands Unified School District8,192

AS396485#3435 SLU-4-ASN - St. Lawrence University8,192

AS397057#3436 FDEC-FIBER - Forked Deer Electric Cooperative, Inc.8,192

AS397103#3437 WAVEFLY-AS397103 - REV8,192

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