Reserved IP Address 251.3.6.139

251.3.6.139 belongs to the reserved IP address space 240.0.0.0-255.255.255.255 (240.0.0.0/4).

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Not every IP address has owner information associated with it. This is the case with your lookup of 251.3.6.139 here on IPAddress.com. 251.3.6.139 falls in to one of these categories. The categories include either a internal IP address, private IP address, or reserved IP address.

All of these types of IP addressess like 251.3.6.139 have limited information available because they exist in private networks or configurations. Routers and network modems for example might use 251.3.6.139 in the default configuration. You would type 251.3.6.139 directly in your web browser to login the admin interface.

Examples of router and modem brands that might use 251.3.6.139 in their configuration include Cisco Linksys, Netgear, TP-Link, ASUS, D-Link, Netcomm, Zyxel, Edimax, Belkin, Thomson, and hundreds more.

In other times 251.3.6.139 may fall in a reserved IP range whose scope could be set aside for use in software, subnets, and private networks. Private networks exist to keep local traffic contained to a home or business, and not exposed outside of these areas.

Examples of private or reserved use include broadcast messages, local communications, service providers, testing, and future applications.

IANA IPv4 Address Space Allocation for Subnet 251.0.0.0/8

IPv4 Address Space Prefix251/8
Regional Internet Registry (RIR)Future use
Allocation Date
StatusRESERVED
Designated by the IETF (Internet Engineering Task Force) for specific non-global-unicast purposes as noted.
Notes

Reserved for future use (formerly "Class E") RFC1112.

Reserved by protocol. For authoritative registration, see IANA IPv4 Special-Purpose Address Registry.

251.3.6.139 IP Address Representations

CIDR Notation251.3.6.139/32
Decimal Notation4211279499
Hexadecimal Notation0xfb03068b
Octal Notation037300603213
Binary Notation11111011000000110000011010001011
Dotted-Decimal Notation251.3.6.139
Dotted-Hexadecimal Notation0xfb.0x03.0x06.0x8b
Dotted-Octal Notation0373.03.06.0213
Dotted-Binary Notation11111011.00000011.00000110.10001011

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