IP pool by organisation

Search for "PSINet/ World Serve Internet Services"

IP Pool	Country	State / Region	City	Coordinates	Timezone
206.233.56.0 - 206.233.56.255	United States ISP \| ORG	Colorado ISP \| ORG	Fort Collins ISP \| ORG	40.5702, -105.075	America/Denver (UTC-6) ISP \| ORG