AS10381 Southwest Cyberport, Inc.

SWCP-AS - Southwest Cyberport, Inc. · registered in the United States

IPv4 addresses21,7609 prefixes · <0.001% of announced IPv4

Rank in United States#2,057largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,838of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS10381 in ASN lookup Look up an IP in this network (64.42.128.1) All networks in United States

IPv4 prefixes

All 9 prefixes, in address order.

64.42.128.0/20
64.42.160.0/20
69.49.160.0/20
192.160.121.0/24
198.49.44.0/24
198.49.217.0/24
198.59.115.0/24
204.29.236.0/24
216.184.0.0/19

IPv6 prefixes

All 1 prefix.

2001:1800::/32

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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