HTTPfy

AS15149 Core Technology Services, Inc.

EZZI-101-BGP - Core Technology Services, Inc. · registered in the United States

IPv4 addresses25,34411 prefixes · <0.001% of announced IPv4
Rank in United States#1,914largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#5,418of 79,396 networks with IPv4
IPv6noneno IPv6 routes announced
CountryUnited States18,679 ASNs registered there

IPv4 prefixes

All 11 prefixes, in address order.

  • 64.29.188.0/22
  • 66.199.224.0/21
  • 66.199.232.0/22
  • 72.9.96.0/20
  • 96.45.68.0/22
  • 216.150.64.0/19
  • 216.169.96.0/20
  • 216.169.112.0/22
  • 216.169.116.0/23
  • 216.169.119.0/24
  • 216.169.120.0/21

Similar-sized networks in United States

ASNNameIPv4 addresses
AS4043#1911 MIC-ASN - Montana Internet Corporation25,344
AS13855#1912 CFU-NET - The Municipal Communications Utility of the City of Cedar Falls, Iowa25,344
AS48806#1913 stackster Stackster LLC25,344
AS18434#1915 FNIS - Fidelity National Information Services, Inc.25,344
AS18834#1916 NETWORKIP - Network IP25,344
AS22255#1917 ALLEGHENYHEALTHNETWORK - Allegheny Health Network25,344

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