128.138.255.255 🇺🇸

The public IP address 128.138.255.255 is located in Boulder, Colorado, 80303, United States. It is assigned to the ISP University of Colorado at Boulder. The address belongs to ASN 104 which is delegated to COLORADO-AS.
Please have a look at the tables below for full details about 128.138.255.255, or use the IP Lookup tool to find the approximate IP location for any public IP address.

Trace an Email Address

128.138.255.255 IP Address Location

Reverse IP (PTR)none
ASN104 (COLORADO-AS)
ISP / OrganizationUniversity of Colorado at Boulder
IP Connection TypeCable/DSL [internet speed test]
IP LocationBoulder, Colorado, 80303, United States
IP ContinentNorth America
IP Country🇺🇸 United States (US)
IP StateColorado (CO)
IP CityBoulder
IP Postcode80303
IP Latitude39.9947 / 39°59′40″ N
IP Longitude-105.2366 / 105°14′11″ W
IP TimezoneAmerica/Denver
IP Local Time

IANA IPv4 Address Space Allocation for Subnet 128.0.0.0/8

IPv4 Address Space Prefix128/8
Regional Internet Registry (RIR)Administered by ARIN
Allocation Date
WHOIS Serverwhois.arin.net
RDAP Serverhttps://rdap.arin.net/registry, http://rdap.arin.net/registry
StatusLEGACY
Allocated by the central Internet Registry (IR) prior to the Regional Internet Registries (RIRs). This address space is now administered by individual RIRs as noted, including maintenance of WHOIS Directory and reverse DNS records. Assignments from these blocks are distributed globally on a regional basis.

128.138.255.255 IP Address Representations

CIDR Notation128.138.255.255/32
Decimal Notation2156593151
Hexadecimal Notation0x808affff
Octal Notation020042577777
Binary Notation10000000100010101111111111111111
Dotted-Decimal Notation128.138.255.255
Dotted-Hexadecimal Notation0x80.0x8a.0xff.0xff
Dotted-Octal Notation0200.0212.0377.0377
Dotted-Binary Notation10000000.10001010.11111111.11111111