IPv4 prefix

66.18.136.0/21

IP Prefix (CIDR)

66.18.136.0/21

Subnet Mask

255.255.248.0

Address Count

2,048

IP Range

66.18.136.0 - 66.18.143.255

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Registered Owner

Owner

MPOWER COMMUNICATIONS CORP.

Handle

MPWR

Address

Plaza 7000 North Mopac Expressway Suite 2080 Austin TX 78731 United States

Registry

ARIN

Registered Prefix

66.18.128.0/19 (66.18.128.0 - 66.18.159.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
66.18.136.0/21	Exact	AS14265	TPx Communications	United States of America (US)	66.18.136.0	66.18.143.255