Improved passive TCP/IP geolocation
Improved passive TCP/IP geolocation launched on June 28, 2016 with 78 votes, #622 of 4,334 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 10 years on.
In plain words
Improved Passive TCP/IP Geolocation is a tool for locating devices on a network based on their IP addresses without active probing. Launched in 2016, it uses passive methods to determine geographical location from TCP/IP traffic patterns. The software is designed for network administrators, security professionals, and researchers who need to identify device locations for network monitoring, security analysis, or infrastructure planning purposes. It stands out by avoiding active network scanning methods that could trigger security alerts.
written from the facts on this page · September 2026
Does a similar job
all alternatives →
Tiny, fast, and free API to geolocate IP addresses2019 · github.com · ▲144Lightweight API service to get geolocation data from IP addresses. - risk3sixty/geoapi
IPLocate.io – a free IP geolocation service2017 · iplocate.io · ▲20Real-time geolocation and privacy detection API for developers and enterprises. Free up to 1,000 requests per day. Detect user location, proxy and VPN usage, and more. Trusted by 100k businesses worldwide. More than 15 billion requests served every month.

IP-Api.io – Geolocation by IP2019 · ip-api.io · ▲36Fast JSON API for IPv4/IPv6 geolocation, ASN/ISP data, and VPN/proxy detection. Start in minutes.
IP2Location IP Geolocation2017 · ip2location.com · ▲9Geolocate IP Address Location using IP2Location
GeoSpoof – your VPN hides your IP, but the browser leaks your locationJul 2026 · geospoof.com · ▲19Hello HN, I started building GeoSpoof after I noticed my IP says one country, but the browser still hands sites my real location. Websites were flagging me because of this discrepancy. I searched for a good geolocation spoofer, only to go down a rabbit hole that there are dozens of signals that your browser emits and no tool could cover them all on every platform. GeoSpoof overrides every location-related API to present one consistent signal for location. You can search a city, enter coordinates, or hit "Sync with VPN" to auto-detect your exit region and match it, which re-syncs when you…
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Source: Show HN post ↗
Launched alongside, June 2016
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Work · 2016 · oneviewcalendar.com
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