145.140.21.172 - IP Address Lookup

The IP address location of 145.140.21.172 is Utrecht 3514, Provincie Utrecht (UT), Netherlands (NL).

145.140.21.172 is a public IP address that belongs to ASN 1103 which is under the control of SURFnet bv. The prefix 145/8 (145.0.0.0/8) was delegated for administration to RIPE NCC by the Internet Assigned Numbers Authority (IANA) in .

145.140.21.172 IP Address Location

Here you will find the approximate IP geolocation for 145.140.21.172 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 Lookup145.140.EARLY-REGISTRATION.of.SURFnet.invalid
IP Address ASN1103 controlled by SURFnet bv
IP ISP / OrganizationSURFnet bv
IP Connection TypeCable/DSL [internet speed test]
IP Location ContinentEurope
IP Location CountryNetherlands (NL)
IP Location StateProvincie Utrecht (UT)
IP Location CityUtrecht
IP Location Postcode3514
IP Location Latitude52.0996 / 52°5′58″ N
IP Location Longitude5.1203 / 5°7′13″ E
IP Location TimezoneEurope/Amsterdam
IP Location Local Time

IANA IPv4 Address Space Allocation for Subnet 145.0.0.0/8

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 Prefix145/8
Regional Internet Registry (RIR)Administered by RIPE NCC
Allocation Date
WHOIS Serverwhois.ripe.net
RDAP Serverhttps://rdap.db.ripe.net/
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.

145.140.21.172 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 145.140.21.172.

  • 145.140.EARLY-REGISTRATION.of.SURFnet.invalid

145.140.21.172 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 145.140.021.172 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 Notation2441876908
Hexadecimal Notation0x918c15ac
Octal Notation022143012654
Binary Notation10010001100011000001010110101100
Dotted-Decimal Notation145.140.21.172
Dotted-Hexadecimal Notation0x91.0x8c.0x15.0xac
Dotted-Octal Notation0221.0214.025.0254
Dotted-Binary Notation10010001.10001100.00010101.10101100

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