AS40523 OACYS TECHNOLOGY

OACYS-INTERNET - OACYS TECHNOLOGY · registered in the United States

IPv4 addresses8,1922 prefixes · <0.001% of announced IPv4

Rank in United States#3,268largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#10,304of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS40523 in ASN lookup Look up an IP in this network (64.18.240.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

64.18.240.0/20
172.83.224.0/20

IPv6 prefixes

All 1 prefix.

2604:d00::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

AS30263#3265 COTNET - Cal-Ore Telephone Co.8,192

AS33038#3266 XTT1 - XIT Rural Telephone Cooperative Inc.8,192

AS40395#3267 VIRTBIZ-DALLAS - VIRTBIZ Internet Services8,192

AS46825#3269 CBPU - Coldwater Board of Public Utilities8,192

AS54646#3270 HARDYNET - Hardy Telecommunications8,192

AS62862#3271 RAPID-FIBER-INTERNET-LLC - Rapid Fiber Internet, LLC8,192

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