IPv4 Address

127.0.0.1

Localhost / Loopback

Loopback
Organization
Loopback
ASN
N/A (private)
Location
Localhost
Type
Loopback
PTR / Reverse DNS
localhost
IP Version
IPv4 Address
Full Geolocation Lookup Check Blacklist Status WHOIS Lookup

What is 127.0.0.1?

127.0.0.1 is the loopback IP address, also known as localhost. It refers to the computer itself and is defined by RFC 5735. Any traffic sent to 127.0.0.1 is routed back to the local machine without going through the network. It is used for local development servers, testing, and inter-process communication on the same host.

Privacy note

127.0.0.1 cannot appear as a public IP or a valid network candidate in WebRTC. If it appears in any external-facing context, it indicates misconfigured software. It is completely safe and normal to see localhost in development environments.

Check this IP address with MyIPScan tools

IP Geolocation LookupSee country, city, ISP, and ASN details for any IP address. IP Blacklist CheckerCheck if this IP appears on major spam and abuse blocklists. WHOIS LookupGet registrar and ownership information for this IP block. DNS LookupLook up PTR records and DNS data associated with this IP. DNS Leak TestCheck which DNS resolvers your browser is using right now. VPN Leak TestVerify your VPN is routing all traffic correctly.

Frequently asked questions about 127.0.0.1

What is 127.0.0.1?

127.0.0.1 is the loopback IP address, also known as localhost. It refers to the computer itself and is defined by RFC 5735. Any traffic sent to 127.0.0.1 is routed back to the local machine without going through the network. It is used for local development servers, testing, and inter-process communication on the same host.

Who owns 127.0.0.1?

127.0.0.1 is operated by Loopback. The ASN is N/A (private).

Where is 127.0.0.1 located?

Based on geolocation data, 127.0.0.1 is associated with Localhost. IP geolocation is approximate and may differ from the physical server location.

Is 127.0.0.1 safe?

127.0.0.1 cannot appear as a public IP or a valid network candidate in WebRTC. If it appears in any external-facing context, it indicates misconfigured software. It is completely safe and normal to see localhost in development environments.

How do I look up 127.0.0.1?

Use MyIPScan's IP Geolocation Lookup, WHOIS Lookup, or IP Blacklist Checker to get detailed information about this address.

Related IP address lookups

Use MyIPScan to look up any IP address, check your current public IP, or run a full privacy diagnostic.

Check My Current IP Full Exposure Report