IP lookup: 1.0.0.1
An IP lookup shows network information associated with a specific IP address, including ISP, ASN, approximate geographic location and reverse DNS.
About 1.0.0.1
1.0.0.1 is a public IPv4 address. As a 32-bit number it equals 16777217, and its leading octet places it in the traditional class A range.
In classless routing it falls inside 1.0.0.0/24: host addresses 1.0.0.1 to 1.0.0.254, with 1.0.0.255 as that block's broadcast address. The wider 1.0.0.0/8 block shows its position in the IPv4 space.
Its reverse-DNS name is 1.0.0.1.in-addr.arpa — the PTR name a resolver queries to map 1.0.0.1 back to a hostname.
PipeIP recorded Cloudflare, Inc as the operator of 1.0.0.1 on 2026-08-20, announced by AS13335.
Geolocation, ISP naming and the current PTR answer are live values that can change, so they are loaded below instead of being frozen here.
Live lookup data
Autonomous System Number (ASN)
AS13335 Cloudflare, Inc.
ISP
Cloudflare, Inc
Country
Australia
City
South Brisbane
Type
IPv4
Region
Queensland
Postal code
4101
Timezone
Australia/Brisbane
Reverse DNS (PTR)
one.one.one.one
Network Block
1.0.0.0/24