Autonomous System

AS30264 Columbia Power and Water Systems

ISPActiveUnited StatesARIN

AS30264 (COLUMBIAPWS) is an ISP network operated by Columbia Power and Water Systems in United States, registered with ARIN. It has 45 IPv4 prefixes with 28,160 addresses, which makes it the 5,713th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses28,160in 45 prefixes
IPv6 prefixes0none
Size rank#5,713of 82,200 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationColumbia Power and Water Systems
AS nameCOLUMBIAPWS
Websitecpws.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contacteric.batdorf@cpws.com
Registered2003-08-22
Last updated2026-01-16

IPv4 prefixes

45 prefixes · 28,160 addresses
NetworkAddressesFirst – last address
66.211.16.0/204,09666.211.16.0 – 66.211.31.255
76.9.160.0/204,09676.9.160.0 – 76.9.175.255
138.43.216.0/212,048138.43.216.0 – 138.43.223.255
66.211.16.0/221,02466.211.16.0 – 66.211.19.255
66.211.20.0/221,02466.211.20.0 – 66.211.23.255
66.211.24.0/221,02466.211.24.0 – 66.211.27.255
66.211.28.0/221,02466.211.28.0 – 66.211.31.255
76.9.160.0/221,02476.9.160.0 – 76.9.163.255
76.9.164.0/221,02476.9.164.0 – 76.9.167.255
76.9.168.0/221,02476.9.168.0 – 76.9.171.255
76.9.172.0/221,02476.9.172.0 – 76.9.175.255
138.43.212.0/221,024138.43.212.0 – 138.43.215.255
138.43.210.0/23512138.43.210.0 – 138.43.211.255
66.211.18.0/2425666.211.18.0 – 66.211.18.255
66.211.19.0/2425666.211.19.0 – 66.211.19.255
66.211.20.0/2425666.211.20.0 – 66.211.20.255
66.211.21.0/2425666.211.21.0 – 66.211.21.255
66.211.22.0/2425666.211.22.0 – 66.211.22.255
66.211.24.0/2425666.211.24.0 – 66.211.24.255
66.211.25.0/2425666.211.25.0 – 66.211.25.255
66.211.26.0/2425666.211.26.0 – 66.211.26.255
66.211.27.0/2425666.211.27.0 – 66.211.27.255
66.211.28.0/2425666.211.28.0 – 66.211.28.255
66.211.29.0/2425666.211.29.0 – 66.211.29.255
76.9.160.0/2425676.9.160.0 – 76.9.160.255
The 25 largest of 45. The API and the database have all of them.

IPv6 prefixes

No IPv6 prefixes.

Query AS30264 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS30264&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS30264, with or without a key:

curl "https://api.ipapi.is/?q=66.211.16.1"

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