12.91.57.145 🇺🇸

The public IP address 12.91.57.145 is located in Oak Brook, Illinois, 60523, United States. It is assigned to the ISP AT&T Business. The address belongs to ASN 7018 which is delegated to ATT-INTERNET4.
Please have a look at the tables below for full details about 12.91.57.145, or use the IP Lookup tool to find the approximate IP location for any public IP address.

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12.91.57.145 IP Address Location

Reverse IP (PTR)none
ASN7018 (ATT-INTERNET4)
ISP / OrganizationAT&T Business
IP Connection TypeCable/DSL [internet speed test]
IP LocationOak Brook, Illinois, 60523, United States
IP ContinentNorth America
IP Country🇺🇸 United States (US)
IP StateIllinois (IL)
IP CityOak Brook
IP Postcode60523
IP Latitude41.8386 / 41°50′18″ N
IP Longitude-87.9632 / 87°57′47″ W
IP TimezoneAmerica/Chicago
IP Local Time

IANA IPv4 Address Space Allocation for Subnet 12.0.0.0/8

IPv4 Address Space Prefix012/8
Regional Internet Registry (RIR)AT&T Bell Laboratories
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.

12.91.57.145 IP Address Representations

CIDR Notation12.91.57.145/32
Decimal Notation207305105
Hexadecimal Notation0x0c5b3991
Octal Notation01426634621
Binary Notation 1100010110110011100110010001
Dotted-Decimal Notation12.91.57.145
Dotted-Hexadecimal Notation0x0c.0x5b.0x39.0x91
Dotted-Octal Notation014.0133.071.0221
Dotted-Binary Notation00001100.01011011.00111001.10010001