AS33189 South Dakota Board of Regents

SOUTH-DAKOTA-RESEARCH-AND-EDUCATION-NETWORK - South Dakota Board of Regents · registered in the United States

IPv4 addresses2,0484 prefixes · <0.001% of announced IPv4

Rank in United States#6,019largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#21,523of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS33189 in ASN lookup Look up an IP in this network (151.159.220.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

151.159.220.0/22
206.71.32.0/24
206.176.14.0/23
206.176.18.0/24

IPv6 prefixes

All 1 prefix.

2607:f558::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

AS32852#6016 LEXNE-ASN-1 - Lexington Electric System2,048

AS32879#6017 NV-LEG-01 - State of Nevada Legislature2,048

AS33069#6018 AS-BUSINESS-COMMUNICATIONS - BCI2,048

AS36797#6020 RURAL-BROADBAND-NETWORK-SERVICES-LLC - Rural Broadband Network Services LLC2,048

AS40298#6021 GPDATACENTER - General Pacific, Inc.2,048

AS40463#6022 ALABAMA-FIBER-NETWORK - Alabama Fiber Network2,048

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