81.221.254.153 - IP Address Lookup

The IP address location of 81.221.254.153 is Brugg 5200, Aargau (AG), Switzerland (CH).

81.221.254.153 is a public IP address that belongs to ASN 1836 which is under the control of green.ch AG. The address resides in the IP address range 77.0.0.0 - 95.255.255.255 (CIDR notation: 77.0.0.0/8, 78.0.0.0/7, 80.0.0.0/4), and the whole subnet spans a total number of 318,767,104 individual IP addresses. The prefix 081/8 (81.0.0.0/8) was allocated to RIPE NCC by the Internet Assigned Numbers Authority (IANA) in .

81.221.254.153 IP Address Location

Here you will find the approximate IP location for 81.221.254.153 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 Lookupmail.mail-ch.ch
IP Address ASN1836 controlled by green.ch AG
IP ISP / OrganizationGreen Connection AG
IP Connection TypeCable/DSL [internet speed test]
IP LocationBrugg 5200, Aargau (AG), Switzerland (CH)
IP Geolocation Latitude47.4810 / 47°28′51″ N
IP Geolocation Longitude8.2087 / 8°12′31″ E
IP Location TimezoneEurope/Zurich
IP Location Local Time

81.221.254.153 WHOIS IP Lookup

This section provides the IP WHOIS record for IPv4 address 81.221.254.153 which shows who is responsible for the corresponding IP subnet. Use our WHOIS IP Lookup tool to find the IP WHOIS record for any IPv4 or IPv6 address.

IP Address Range77.0.0.0 - 95.255.255.255
Number of IP Addresses318,767,104
IP Subnets
  • 77.0.0.0/8
  • 78.0.0.0/7
  • 80.0.0.0/4
[subnet calculator]
IP WHOIS Network NameEU-ZZ-77
IP WHOIS Registration Date
IP WHOIS Modification Date
IP WHOIS Net ReferenceRIPE
IP WHOIS RegistrantInternet Assigned Numbers Authority
see http://www.iana.org.

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.

81.221.254.153 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 81.221.254.153.

  • mail.mail-ch.ch

81.221.254.153 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 081.221.254.153 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 Notation1373503129
Hexadecimal Notation0x51ddfe99
Octal Notation012167377231
Binary Notation 1010001110111011111111010011001
Dotted-Decimal Notation81.221.254.153
Dotted-Hexadecimal Notation0x51.0xdd.0xfe.0x99
Dotted-Octal Notation0121.0335.0376.0231
Dotted-Binary Notation01010001.11011101.11111110.10011001

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