What Is My IP:
54.161.77.30

128.30.52.21

The public IP address 128.30.52.21 is located in Cambridge, Massachusetts, 02139, United States. It is assigned to the ISP Massachusetts Institute of Technology. The address belongs to ASN 3 which is delegated to Massachusetts Institute of Technology.
Please have a look at the tables below for full details about 128.30.52.21, or use the IP Lookup tool to find the approximate IP location for any public IP address.

128.30.52.21 IP Address Location

Reverse IP (PTR)sinope.w3.org
ASN3 (Massachusetts Institute of Technology)
ISP / OrganizationMassachusetts Institute of Technology
IP Connection TypeCable/DSL [internet speed test]
IP LocationCambridge, Massachusetts, 02139, United States
IP ContinentNorth America
IP CountryUnited States (US)
IP StateMassachusetts (MA)
IP CityCambridge
IP Postcode02139
IP Latitude42.3647 / 42°21′52″ N
IP Longitude-71.1042 / 71°6′15″ W
IP TimezoneAmerica/New_York
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.

128.30.52.21 Reverse IP Lookup

128.30.52.21 IP Address Representations

CIDR Notation128.30.52.21/32
Decimal Notation2149463061
Hexadecimal Notation0x801e3415
Octal Notation020007432025
Binary Notation10000000000111100011010000010101
Dotted-Decimal Notation128.30.52.21
Dotted-Hexadecimal Notation0x80.0x1e.0x34.0x15
Dotted-Octal Notation0200.036.064.025
Dotted-Binary Notation10000000.00011110.00110100.00010101

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