IP pool by organisation

Search for "PRESORT FIRST CLASS"

IP Pool	Country	State / Region	City	Coordinates	Timezone
66.196.233.224 - 66.196.233.231	United States ISP \| ORG	Oklahoma ISP \| ORG	Tulsa ISP \| ORG	36.151, -95.9955	America/Chicago (UTC-5) ISP \| ORG