AS21737 SpringNet

SPRINGNET2-NET - SpringNet · registered in the United States

IPv4 addresses24,83212 prefixes · <0.001% of announced IPv4

Rank in United States#1,925largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,450of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS21737 in ASN lookup Look up an IP in this network (64.22.224.1) All networks in United States

IPv4 prefixes

All 12 prefixes, in address order.

64.22.224.0/23
64.22.226.0/23
64.22.228.0/22
64.22.232.0/21
64.22.240.0/21
64.22.248.0/23
64.22.250.0/23
64.22.252.0/22
66.119.0.0/19
75.98.96.0/20
76.77.128.0/20
198.246.200.0/24

IPv6 prefixes

All 1 prefix.

2001:49b8::/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