How to use this IP Lookup tool
Enter a public IPv4 or IPv6 address into the input field and click Lookup IP.
If you leave the field blank, the tool will try to retrieve details for your current public
IP address. The result is displayed as structured JSON so you can review the returned fields
directly or copy them for debugging and documentation.
- Enter a public IP address, or leave the field empty.
- Click Lookup IP.
- Review the returned metadata in the result area.
- Copy the output if you need it for support, diagnostics, or records.
If you want related network diagnostics, you can also use tools such as
DNS Lookup,
Whois Lookup,
SSL Checker, or
HTTP Header Checker.
What this tool can show
{
"ip": "8.8.8.8",
"city": "Mountain View",
"region": "California",
"country_name": "United States",
"timezone": "America/Los_Angeles",
"org": "Google LLC",
"asn": "AS15169"
}
Common use cases
- Check where traffic may be coming from
- Review ISP or ASN information
- Verify hosting or CDN region
- Troubleshoot support tickets
- Inspect public IP metadata
- Compare lookup results during testing
IP geolocation is an educated guess, not a GPS fix
The city, region, and coordinates an IP lookup returns are inferred, not
measured — there is no location stored inside an IP address. Geolocation databases are
built by combining the regional registry records that say which block was allocated to which
organisation, routing and latency data that hints where a block is announced, and details
that ISPs publish or that get crowd-sourced. Country-level accuracy is usually good.
City-level accuracy is unreliable and gets worse the more an address is shared or routed.
Several common situations break it entirely. A VPN or proxy returns the exit node's
location, not the user's. Mobile networks route large regions through a handful of gateways,
so a phone can appear a hundred miles from where it is. Corporate traffic often egresses
through a head-office link. Treat the coordinates as “roughly where this network is
administered,” never as where a person is sitting.
Public, private, and the carrier-grade middle
Not every IP can be looked up, because not every IP is globally routable.
RFC 1918 reserves three private ranges — 10.0.0.0/8,
172.16.0.0/12, and 192.168.0.0/16 — for use inside home and
office networks. These never appear on the public internet, so geolocating
192.168.1.10 is meaningless; billions of devices share it behind separate
routers.
The bigger modern complication is IPv4 exhaustion. The world ran out of
fresh IPv4 blocks years ago, so ISPs increasingly put many customers behind a single public
address using Carrier-Grade NAT (the shared range
100.64.0.0/10 sits between the subscriber and the real internet). One public
IPv4 can front thousands of unrelated users. That is why an IP is a poor unique identifier:
blocking or rate-limiting an address can catch an entire neighbourhood, and the “same”
visitor can change addresses between requests.
Do not trust the IP your app reads without a proxy chain
When your site sits behind a load balancer, CDN, or reverse proxy, the connection your
server sees comes from the proxy, not the client. The original address is passed along in a
header — usually X-Forwarded-For or Forwarded. The trap: that
header is just text, and a client can send whatever it likes in it. If you read
X-Forwarded-For and believe the first value, anyone can forge their apparent IP,
defeating rate limits, geo rules, and audit logs.
The correct approach is to trust the header only as far as your own infrastructure wrote it:
configure how many proxy hops you trust and take the client address as the entry the
outermost trusted proxy appended, discarding anything further left that the client could have
injected. If you terminate behind a CDN, use the address the CDN vouches for (many provide a
dedicated header) rather than the raw forwarded list.
What this tool sends, and what it reads about you
Leave the field blank and the tool looks up the public address your own request came from;
type an address and it looks up that one instead. Either way the query goes to a third-party
geolocation API (ipapi.co) — the lookup cannot run purely in your browser,
because the registry and inference data it needs lives in a server-side database. The address
you enter, or the one your connection exposes, is sent to that service. What comes back is
that provider's best estimate: expect the ASN and network operator to be accurate, the
country usually right, and the city a guess.
The parts of an IP lookup you can actually trust
Not every field is a guess. The ASN (Autonomous System Number) and the
organisation that owns it are registry-backed facts, not inferences: they tell you which
network operator announces the address to the internet — an ISP, a hosting company, a
cloud provider, or a mobile carrier. That is usually the most useful signal. Seeing a
datacentre or cloud ASN (AWS, Google Cloud, OVH) behind traffic that claims to be a
residential user is a strong hint of a proxy, scraper, or bot; a mobile-carrier ASN explains
why the geolocation came back vague.
A related lookup is reverse DNS (the PTR record), which maps an address back
to a hostname. It is set by whoever controls the address block, so it often reveals the
hosting provider or mail-server naming even when nothing else does — but it is optional
and self-declared, so treat a PTR as a hint, not proof. For separating “real user vs
datacentre,” the ASN and organisation are far more dependable than the city or
coordinates.
Frequently asked questions
Why is the reported city or location wrong?
Because it is inferred, not measured. Geolocation maps an address to where its network is
administered, which can be far from the user — and a VPN, proxy, or mobile carrier
moves the apparent location entirely. Country is usually reliable; city often is not.
Can I look up my own IP address?
Yes. Leave the field blank and the tool reports the public address your connection
presents to the internet, along with the provider's best estimate of its network and
location. Behind a home router this is your ISP-assigned address, not your device's
private 192.168.x.x one.
Why do two tools show different locations for the same IP?
Each geolocation provider builds its own database from registry, routing, and
crowd-sourced data, and they disagree. None is authoritative because none is measuring an
actual position — they are all estimates, so differing results are expected.
Can an IP address identify a specific person or house?
No. Carrier-grade NAT puts thousands of users behind one public address, home addresses
are often dynamic and reassigned, and geolocation is network-level at best. An IP points
to a network and rough area, not an individual.
Why can't I look up a 192.168.x.x address?
It is a private RFC 1918 address that never appears on the public internet. The same
private ranges (10.x, 172.16–31.x, 192.168.x)
are reused inside countless separate networks, so there is nothing global to resolve.
Is the visitor IP in my server logs always the real one?
Not if you sit behind a proxy or CDN and read a forwarded header. Clients can forge
X-Forwarded-For, so only trust it as far as your own trusted proxies wrote
it; otherwise the “visitor” IP can be whatever an attacker typed.