81.207.21.185 - IP Address Lookup

The IP address location of 81.207.21.185 is Leiden 2315, South Holland (ZH), Netherlands (NL).

81.207.21.185 is a public IP address that belongs to ASN 1136 which is under the control of KPN B.V.. The prefix 081/8 (81.0.0.0/8) was allocated to RIPE NCC by the Internet Assigned Numbers Authority (IANA) in .

81.207.21.185 IP Address Location

Here you will find the approximate IP geolocation for 81.207.21.185 as reported by our IP Tracker along with additional information like ASN mapping, ISP, and the type of internet connection. Use the free IP Lookup tool to find the IP geolocation for any public IP address.

IP PTR / DNS Reverse Lookupip51cf15b9.direct-adsl.nl
IP Address ASN1136 controlled by KPN B.V.
IP ISP / OrganizationKPN
IP Connection TypeCable/DSL [internet speed test]
IP Location ContinentEurope
IP Location CountryNetherlands (NL)
IP Location StateSouth Holland (ZH)
IP Location CityLeiden
IP Location Postcode2315
IP Location Latitude52.1632 / 52°9′47″ N
IP Location Longitude4.5095 / 4°30′34″ E
IP Location TimezoneEurope/Amsterdam
IP Location Local Time

IANA IPv4 Address Space Allocation for Subnet 81.0.0.0/8

The Internet Assigned Numbers Authority (IANA) is responsible for global IP address space allocation to Regional Internet Registries (RIRs). The available IPv4 address space is typically allocated to RIRs as /8 prefix blocks, and the RIRs delegate smaller blocks of their address pools to Local Internet Registries (LIRs) like Internet Service Providers and other organizations in their designated locations.

IPv4 Address Space Prefix081/8
Regional Internet Registry (RIR)RIPE NCC
Allocation Date
WHOIS Serverwhois.ripe.net
RDAP Serverhttps://rdap.db.ripe.net/
StatusALLOCATED
Delegated entirely to specific RIR (Regional Internet Registry) as indicated.

81.207.21.185 Reverse IP Lookup

Reverse IP address lookup is the process of mapping an IP address to its corresponding hostnames. Below you will find a list of hostnames that resolve to IP address 81.207.21.185.

  • ip51cf15b9.direct-adsl.nl

81.207.21.185 IP Address Representations

An IPv4 address is defined as a 32-bit number, and thus it can be written in any notation that is capable of representing a 32-bit integer value. If human-readability is a requirement, IPv4 addresses are most often expressed in quad-dotted decimal notation with 4 octets ranging from 0 to 255 each.
Note: You should avoid IP addresses with zero-padded decimal octets like 081.207.021.185 or 010.010.010.010 because they might impose an ambiguity with octal numbers.
Below you can find some ways to express an IPv4 address.

Decimal Notation1372526009
Hexadecimal Notation0x51cf15b9
Octal Notation012163612671
Binary Notation 1010001110011110001010110111001
Dotted-Decimal Notation81.207.21.185
Dotted-Hexadecimal Notation0x51.0xcf.0x15.0xb9
Dotted-Octal Notation0121.0317.025.0271
Dotted-Binary Notation01010001.11001111.00010101.10111001

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