IP pool by organisation

Search for "PSINet/National Performance Review"

IP Pool	Country	State / Region	City	Coordinates	Timezone
206.5.113.0 - 206.5.113.255	United States ISP \| ORG	District of Columbia ISP \| ORG	Washington ISP \| ORG	38.8997, -77.0399	America/New_York (UTC-4) ISP \| ORG