3 ms·

I just finished integrating geo IP lookups into an app I'm working on, using a library that queries a number of the free IP lookup services out there. Something

I just finished integrating geo IP lookups into an app I'm working on, using a library that queries a number of the free IP lookup services out there. Something that I've learned from this is just how hard it is to stay on top of IP geolocations. Most of the free services use incomplete or outdated databases, and if you want decent accuracy you probably need to opt for a paid package from a company who has the resources to track IP address location changes, and keep their database up to date. So, I'm wondering, does ipinfo.io maintain their own database, or do they sub-license someone else's database? If they're maintaining their own, how good are they at keeping it valid and updated and what is the coverage like?

Gys 13y ago
It uses one of the free databases that are available. Ip address 200.7.52.1 is a good way to check these services. This should position to the island of Sint Maarten. A serious offering would know that. The free ones always set the position to Curacao. Just about 900 NM away...
- gesman 13y ago
  This does it correctly: http://myip.ms/info/whois/200.7.52.1 http://myip.ms/info/whois/200.7.52.1
  - brg1007 13y ago
    This is the first service I tried in 8 years which returned correctly the location of an IP that i know physically where it is.
msumpter 13y ago
I was trying to figure out which database they were using as well. I've checked their results for my IP address against the results from MaxMind's GeoIP City and GeoIP2 City service and these return the closet results related to the Latitude/Longitude displayed on ipinfo.io, it also has a matching zip code. The network name differs since I'm on U-Verse but I think they are just displaying the company name from the ASN. I also checked Quova/Neustar and the results are vastly different.

3 ms·

I just finished integrating geo IP lookups into an app I'm working on, using a library that queries a number of the free IP lookup services out there. Something

by disbelief 13y ago

Gys 13y ago
It uses one of the free databases that are available. Ip address 200.7.52.1 is a good way to check these services. This should position to the island of Sint Maarten. A serious offering would know that. The free ones always set the position to Curacao. Just about 900 NM away...
- gesman 13y ago
  This does it correctly: http://myip.ms/info/whois/200.7.52.1 http://myip.ms/info/whois/200.7.52.1
  - brg1007 13y ago
    This is the first service I tried in 8 years which returned correctly the location of an IP that i know physically where it is.
msumpter 13y ago
I was trying to figure out which database they were using as well. I've checked their results for my IP address against the results from MaxMind's GeoIP City and GeoIP2 City service and these return the closet results related to the Latitude/Longitude displayed on ipinfo.io, it also has a matching zip code. The network name differs since I'm on U-Verse but I think they are just displaying the company name from the ASN. I also checked Quova/Neustar and the results are vastly different.