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AS401114 Columbia County

COLUMBIACOUNTYWI - Columbia County · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4
Rank in United States#18,027largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#79,001of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there

IPv4 prefixes

All 1 prefix, in address order.

  • 66.45.72.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses
AS401092#18024 ESUSDNET - El Segundo Unified School District256
AS401099#18025 HTC-IS-01 - Horry Telephone Cooperative, Inc.256
AS401102#18026 WATCHFIRE-HQ-ASN-1 - Watchfire256
AS401127#18028 TFBCI-WACO - Texas Farm Bureau Casualty Insurance Company256
AS401136#18029 LCI-HQ - LC Industries Inc.256
AS401149#18030 EQUITYBANK-ASN - Equity Bank256

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