Network Utilities

IP Lookup, CIDR Calculator, MAC Address Lookup, and Port Number Lookup
Examples:

IP Address Information

Located in Ashburn, United States
34.231.244.12
IP Address 34.231.244.12
Hostname ec2-34-231-244-12.compute-1.amazonaws.com
City Ashburn
Region Virginia
Country United States
Phone Code 1
Geo Location 39.0481,-77.4728
Organization Amazon.com, Inc.
ASN Number 14618
API Call

Get JSON results via command line with either curl or wget.

Try it:
curl "https://steamr.com/34.231.244.12" 

{
    "ip": "34.231.244.12",
    "hostname": "ec2-34-231-244-12.compute-1.amazonaws.com",
    "city": "Ashburn",
    "region": "Virginia",
    "country": "US",
    "country_name": "United States",
    "phone_code": "1",
    "location": "39.0481,-77.4728",
    "postal": "20149",
    "organization": "Amazon.com, Inc.",
    "asn": 14618
}