AS33203 2CRSI Corporation

2CRSI - 2CRSI Corporation · registered in the United States

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in United States#10,124largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#47,482of 79,396 networks with IPv4

IPv64,096 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS33203 in ASN lookup Look up an IP in this network (216.83.48.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

216.83.48.0/23

IPv6 prefixes

All 1 prefix.

2602:f911::/36

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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