AS399436 Cortland County Health Department

CORTLAND-COUNTY - Cortland County Health Department · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#17,690largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#78,624of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399436 in ASN lookup Look up an IP in this network (204.87.158.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

204.87.158.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS399432#17687 AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas256

AS399433#17688 AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas256

AS399434#17689 SFCC-EDU - Santa Fe Community College256

AS399437#17691 LUZERNE-IT-ASN - Luzerne County256

AS399441#17692 NTXFW1 - TMConcepts LLC256

AS399442#17693 OLELO-COMMUNITY-MEDIA-01 - OLELO COMMUNITY MEDIA256

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